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Google Fi and dual sim adapter?

I recently got an invite to google fi and I ported one of my phone numbers to there. the service seems pretty solid, being on tmobiles network and sprints network. I wanted to see if I can purchase a dual sim card adapter and then put a att sim card in there also, so on the google fi side id be on tmobile and sprint network (with 1 number), and my other cell phone number be on the att side?

ID assume myself that it should work.
A dual sim adapter would work on wcdma, hspa+, gsm and LTE. So the gsm side of tmobile and att would work through the simcard adapter, as well as the LTE part of all 3 networks. CDMA part would be programmed into the phone not the simcard. Correct me if I'm wrong?

symbiance said:
ID assume myself that it should work.
A dual sim adapter would work on wcdma, hspa+, gsm and LTE. So the gsm side of tmobile and att would work through the simcard adapter, as well as the LTE part of all 3 networks. CDMA part would be programmed into the phone not the simcard. Correct me if I'm wrong?
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CDMA hook is in the software. Pretty much they have to have the CDMA RILs in the software to enable Sprint and Verizon CDMA radios..

So theoretically a dualsim adapter should work on my nexus 6 with a gfi sim and a att sim?

How would a dual sim adapter fit?
That's the question that should be asked in my honest opinion.

^^ What he said
If there was one, it wouldnt fit into the phone, or it would stick out like a OTG device. Wouldnt be very usable or convenient - better off switching sims as needed.

I actually found a few. They are flex cables that stick out. Not really safe unless you have a case similar to the roocase glacier or something that has space between the back of the phone and the inside of the case. Secondly the software needs to support it.

Yeah these do work for the N6 but not for CDMA
Hi,
Just wanted to mention that I've used a dual-sim adapter with the Nexus 6 and they do work really well, but only for GSM carriers. I used one successfully with Cricket and T-Mobile SIMs and the phone did great switching back and forth and rarely needed a reboot to get it to work. CDMA SIMs *never* worked right, which I'll discuss at length below. Any wrap-around case works well to protect the adapter (the EVOCEL one works *really* well) but the SIM tray will stick out ever so slightly to make room for the ribbon cable that connects the two SIMs which can look a bit weird and disconcerting.
AliExpress has the adapters very cheap (like $3-$5 - order several as you'll probably break them a few times learning to install them in the N6) - I would steer clear of any of the expensive ones like MagicSIM as these have a tendency to break easily and asking $30-$40 for one is insulting IMO considering how delicate they are. Plus the MagicSIM one I had was the worst of the bunch and totally sucked.
Anyway, I tried a bunch of these adapters...MagicSIM and the AliExpress ones...and *none* of them successfully worked with a Verizon or PagePlus (CDMA/LTE) SIM. Sometimes you could get a LTE signal out of the Verizon SIM, but more often than not the SIM Toolkit crashed and it'd require a reboot after which it usually wouldn't work anyway. Oddly enough the CDMA SIMs did work decently in the adapter(s) when used with a Verizon 2013 Moto X I have...*but* the CDMA 1X and EVDO connections never worked...just LTE. I have no clue if a Project Fi SIM would work with these but I'd be extremely skeptical...but eh who knows?
Hope this all helps - it's a freaking shame that Google didn't make the Nexus 6 (and now the 6P and 5X) dual-SIM - such a waste of an amazing LTE/GSM/CDMA radio to not offer a dual-SIM model IMO. Though I'm sure they may have their reasons? Too bad...I live in an area where it'd really help to have two cheap pre-paid plans with Verizon and T-Mo and then string them together with Google Voice. No dice though. Good luck!
graydiggy said:
I actually found a few. They are flex cables that stick out. Not really safe unless you have a case similar to the roocase glacier or something that has space between the back of the phone and the inside of the case. Secondly the software needs to support it.
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Click to collapse

flyer_andy said:
Hi,
Just wanted to mention that I've used a dual-sim adapter with the Nexus 6 and they do work really well, but only for GSM carriers. I used one successfully with Cricket and T-Mobile SIMs and the phone did great switching back and forth and rarely needed a reboot to get it to work. CDMA SIMs *never* worked right, which I'll discuss at length below. Any wrap-around case works well to protect the adapter (the EVOCEL one works *really* well) but the SIM tray will stick out ever so slightly to make room for the ribbon cable that connects the two SIMs which can look a bit weird and disconcerting.
AliExpress has the adapters very cheap (like $3-$5 - order several as you'll probably break them a few times learning to install them in the N6) - I would steer clear of any of the expensive ones like MagicSIM as these have a tendency to break easily and asking $30-$40 for one is insulting IMO considering how delicate they are. Plus the MagicSIM one I had was the worst of the bunch and totally sucked.
Anyway, I tried a bunch of these adapters...MagicSIM and the AliExpress ones...and *none* of them successfully worked with a Verizon or PagePlus (CDMA/LTE) SIM. Sometimes you could get a LTE signal out of the Verizon SIM, but more often than not the SIM Toolkit crashed and it'd require a reboot after which it usually wouldn't work anyway. Oddly enough the CDMA SIMs did work decently in the adapter(s) when used with a Verizon 2013 Moto X I have...*but* the CDMA 1X and EVDO connections never worked...just LTE. I have no clue if a Project Fi SIM would work with these but I'd be extremely skeptical...but eh who knows?
Hope this all helps - it's a freaking shame that Google didn't make the Nexus 6 (and now the 6P and 5X) dual-SIM - such a waste of an amazing LTE/GSM/CDMA radio to not offer a dual-SIM model IMO. Though I'm sure they may have their reasons? Too bad...I live in an area where it'd really help to have two cheap pre-paid plans with Verizon and T-Mo and then string them together with Google Voice. No dice though. Good luck!
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Would be great if you do a Video showing how install the Adapters and your experiences

Sure - I'll try and throw something together.
Some additional info that I have found - for some really strange reason it seems that these adapters inhibit the reception of certain LTE bands. I've noticed that I can't pick up band 12 LTE with T-Mobile and band 13 LTE with Verizon when using one of these, no matter the ROM in use. But without the adapter I receive both bands perfectly. I do receive band 17 (AT&T) with the adapter which is bizarre as its also low-band just like 12 and 13. Also, bands 2 and 4 work well and I seem to remember band 5 at some point as well when I was in Michigan over the summer using AT&T towers with a Cricket SIM.
So anyway I'd say the use-case for this is if you have two GSM SIMs and don't mind hit-or-miss LTE reception...namely bands 2, 4, (5?) and 17 only though perhaps there are others.
In any case these adapters are temperamental and definitely seem to have their troubles. But they are also kind of neat and there are definitely cases where they'd be useful.

flyer_andy said:
Sure - I'll try and throw something together.
Some additional info that I have found - for some really strange reason it seems that these adapters inhibit the reception of certain LTE bands. I've noticed that I can't pick up band 12 LTE with T-Mobile and band 13 LTE with Verizon when using one of these, no matter the ROM in use. But without the adapter I receive both bands perfectly. I do receive band 17 (AT&T) with the adapter which is bizarre as its also low-band just like 12 and 13. Also, bands 2 and 4 work well and I seem to remember band 5 at some point as well when I was in Michigan over the summer using AT&T towers with a Cricket SIM.
So anyway I'd say the use-case for this is if you have two GSM SIMs and don't mind hit-or-miss LTE reception...namely bands 2, 4, (5?) and 17 only though perhaps there are others.
In any case these adapters are temperamental and definitely seem to have their troubles. But they are also kind of neat and there are definitely cases where they'd be useful.
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Hi,
Could you recommend an adapter to purchase from aliexpress? I am planning to switch over from Verizon to AT&T and now will have both my lines on AT&T's GSM network so I think I should be good (right?). Also, do the ones on AliExpress support dual active SIMs?
Thanks!

Hi! Honestly the adapters seem to mostly be the same (except for MagicSIM, which was horrible), even though they are sold by different sellers.
I know that I tried this one: http://www.aliexpress.com/item/For-...le-Standby-Flex-Cable-Ribbon/32333186041.html . Make sure you request the proper one though - they have both nano and micro-SIM sizes and you have to say which one you want.
I believe it worked fine and it's not very expensive so you can get a couple of them (I highly recommend buying a few of them as you'll probably destroy one or two of them before you get it to fit in there right). But in any case yes in my experience this scheme worked well with an AT&T SIM (mine was a Cricket SIM but should be the same thing really) and a T-Mobile SIM. Occasionally the SIM Toolkit would crash when changing SIMs and I'd have to reboot but it was pretty rare that that happened. Most of the time it was as simple as selecting the STK app and switching numbers. I should mention though that it took a few reboots initially to get things running correctly following initial installation...almost like everything had to "settle in."
WiFi calling and VOLTE also didn't seem to work with the adapter installed.
Additionally, the "LTE Engineering" app for T-Mobile's Nexus 6 build seems to crash the SIM adapter's firmware, so I think there's probably some data (maybe IMSI or some similar thing) which is getting lost in the adapter's chip? However, "LTE Discovery" and "Signal Check Pro" work just fine and don't cause any problems. Also, there's a chance that one's ROM might have an effect on it as well - it might take some experimentation to find the best combo of factors. Maybe some sort of build.prop edit might help too as I know there are some SIM/telephony items in there.
Finally, the "About Phone/SIM Status" menu in the phone's Settings seemed to always show the phone number that was in use when the phone was booted...but it didn't seem to be an issue as phone calls seemed to come in and work normally no matter what it said.
Good luck! Also I should mention that Amazon.com has these in case you're in the USA and want faster shipping - just pick one that'll fit an iPhone 5 and above and you should be fine. Let us all know how it goes!

flyer_andy said:
Some additional info that I have found - for some really strange reason it seems that these adapters inhibit the reception of certain LTE bands. I've noticed that I can't pick up band 12 LTE with T-Mobile and band 13 LTE with Verizon when using one of these, no matter the ROM in use. But without the adapter I receive both bands perfectly. I do receive band 17 (AT&T) with the adapter which is bizarre as its also low-band just like 12 and 13. Also, bands 2 and 4 work well and I seem to remember band 5 at some point as well when I was in Michigan over the summer using AT&T towers with a Cricket SIM.
So anyway I'd say the use-case for this is if you have two GSM SIMs and don't mind hit-or-miss LTE reception...namely bands 2, 4, (5?) and 17 only though perhaps there are others.
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Did you report these issues back to the AliExpress sellers (and, out of interest, do you recommend any specific sellers, and are the adapters themselves unbranded and without any model numbers?)

dabotsonline said:
Did you report these issues back to the AliExpress sellers (and, out of interest, do you recommend any specific sellers, and are the adapters themselves unbranded and without any model numbers?)
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Click to collapse
No I didn't report the issues except to MagicSIM, who was worthless even given two messages. As far as branding, there are small variations between the adapters physically but they are not branded as far as I can tell...and I've found they all pretty much work the same.
I do seem to notice some variation in how well the various Nexus 6 ROMs handle the STK, however...some seem to be more receptive than others to the adapter.

Onknight said:
Would be great if you do a Video showing how install the Adapters and your experiences
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Click to collapse
Hi! Finally got around to making a video DEMO:
https://youtu.be/6xSO_Vd_GM0
Hope this helps!

flyer_andy said:
Hi! Finally got around to making a video DEMO:
Hope this helps!
Click to expand...
Click to collapse
Very cool! Thanks for the video.

Just an update on the band 12 issue mentioned above - using QXDM I got band 12 back. It seems that the Nexus is doing some funny business with the NV 6828 item with the adapter installed and effectively squashing band 12 by using an odd decimal value. But, one can re-enable this permanently by adding back in an appropriate decimal in item 6828 per the instructions for adding LTE bands on Qualcomm chips (XDA has several threads on how to do this with QPST and QXDM). VoLTE still doesn't work and neither does WiFi calling (I *think* the ICCID is the culprit) but with full T-Mo band 2/4/12 LTE support I'm a happy camper!

Note 5 (T-mobile SM-N920T) wanting to use on ProjectFi

The Devices contains ALL bands required for Sprint and T-mobile, WCDMA, CDMA, and GSM.
I know that I can not "Activate" The ProjectFi SIM Card on my Note 5, which is why I'm looking at buying a used Nexus 6 off of Craigslist to use for activation, however, a few things I would like to know.
The image you see here is of my Samsung Galaxy Note 5 on T-mobile (SM-N920T) with an Unactivated (yet) ProjectFi SIM Card inserted.
On imgur dot com, put a slash and then 7DaTmAg to see the picture
This shows that even without being unlocked, the Note 5 has Signal and decent 4G LTE Connectivity.
What I am asking is:
1) Since this device includes all the bands required for Sprint AND T-Mobile AND can run the ProjectFi app without crashing, and has native WiFi Calling built-in:
A) Will it to be able to handle the Google ProjectFi Seamless network switching between Sprint and T-Mobile?
A-1)Or would it have to be unlocked first to be able to do this? Or would it not do it, either way?
B) Would it support WiFi Calling through ProjectFi?
And C) On an off note, here...If my device gets blacklisted by T-mobile due to non payment (They are just too expensive and not providing the service I need where I live), Would that affect my operational status on ProjectFi's service?

DaddyTj32 said:
The Devices contains ALL bands required for Sprint and T-mobile, WCDMA, CDMA, and GSM.
I know that I can not "Activate" The ProjectFi SIM Card on my Note 5, which is why I'm looking at buying a used Nexus 6 off of Craigslist to use for activation, however, a few things I would like to know.
The image you see here is of my Samsung Galaxy Note 5 on T-mobile (SM-N920T) with an Unactivated (yet) ProjectFi SIM Card inserted.
On imgur dot com, put a slash and then 7DaTmAg to see the picture
This shows that even without being unlocked, the Note 5 has Signal and decent 4G LTE Connectivity.
What I am asking is:
1) Since this device includes all the bands required for Sprint AND T-Mobile AND can run the ProjectFi app without crashing, and has native WiFi Calling built-in:
A) Will it to be able to handle the Google ProjectFi Seamless network switching between Sprint and T-Mobile?
A-1)Or would it have to be unlocked first to be able to do this? Or would it not do it, either way?
B) Would it support WiFi Calling through ProjectFi?
And C) On an off note, here...If my device gets blacklisted by T-mobile due to non payment (They are just too expensive and not providing the service I need where I live), Would that affect my operational status on ProjectFi's service?
Click to expand...
Click to collapse
Yes I just resurrected the heck out of this thread!!!
Did you ever use your note 5 on fi? I am contemplating it but need a little confirmation add I have not been able to find any solid info of if it users sprint as well.

No response, huh? I have a N920T that was on T-Mobile but just cancelled the service. Currently using hangouts to talk while I figure this out.
Sent from my SM-N920T using Tapatalk

This thread sure wants to stay alive. I can answer this to some extent, however. I used my Fi sim in my international unlocked Note 5 for a bit as a test. I have a Nexus 6p so I activated it using that phone since I'm pretty sure thats the only way to activate the sim the first time. I also force switched the phone to Tmobile before removing the sim and putting it my Note 5. I used it for a few hours and data was fine as well as calls/text. I have no experience using it as a long term solution so I can't guarantee it won't stop working down the road, but it worked for me for an evening.

I would think the sprint note 5 would work best on this service but I've never seen anyone mention it in the sprint forums.

Do NOT buy in the US - does NOT work with modern T-Mobile or AT&T networks

Do NOT buy this phone in the US unless Sony gets its phones approved to work with T-Mobile & AT&T
Sadly Sony is the only phone maker that offers a NORMAL sized phone with the Compact series.
Please show me ANY other options for an Android phone with a 4.6"-4.8" screen with a good camera. THERE ARE NONE! The battery life is also beyond incredible. I easily get 1+ (up to 2) days battery life with heavy usage. Standby time (screen off) is easily 7 days (no greenify or any of that crap needed).
I have a Sony Xperia X Compact and it is the BEST ANDROID PHONE I have ever had.
Despite that I have to say that NOBODY SHOULD BUY ANY SONY PHONES.
The phone is awesome and supports pretty much any 3G and 4G band out there but Sony refuses to get these phones approved by AT&T and T-Mobile for VoLTE.
That means (for T-Mobile as an example) that the Xperia X Compact technically supports T-Mobile's super-duper Band 12 LTE which has almost better coverage than Verizon, BUT because the phone is not approved for VoLTE, Sony phones will almost immediately get disconnected from that T-Mobile tower. You may be standing next to someone with an approved phone that has 100% coverage, yet the Sony Xperia phones will show NO RECEPTION.
Sony phones should be able to at least connect to Band 12 for data but they don't. It may technically have the ability to connect to Band 12 and even use VoLTE, but the tower refusal to keep the connection. Sony then apparently also screwed up the band prioritization, because Sony phones even have issues connecting to non VoLTE networks (eg Band 4).
As a result, ALL SONY PHONES ARE PRETTY MUCH UNUSABLE on T-Mobile and AT&T AS A PHONE.
Do NOT buy any Sony phones if you want to use them on T-Mobile and AT&T, though I can tell you that they are the BEST phones otherwise - just not as a phone.
This is pathetic and there is no response from Sony.

But the press releases say these 2 phones will work with t-mobile VOLTE and WiFi Calling.

lobo4806 said:
But the press releases say these 2 phones will work with t-mobile VOLTE and WiFi Calling.
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Yea it will.
https://www.androidheadlines.com/20...z1-compact-support-t-mobile-wifi-calling.html

Lol yes first compact phone they certified I think. If someone figures out how to retain the volte functions and gain fingerprint sensor, I'm in.

I've had several Sony phones (Z1C, Z3, Z5C, all international single-SIM versions) and since at least the Z3, they all supported LTE on AT&T. I'm not sure anything changed since the Z5 era, so I'm hoping the XZ1C works fine on AT&T.

Can someone confirm this phone will work on at&t in the us? God I want it to do bad.

texaslegend said:
Can someone confirm this phone will work on at&t in the us? God I want it to do bad.
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Click to collapse
Unproven rumors that it will be voLTE certified. NO CONFIRMATION FROM SONY OR T-MOBILE.
Even so, you won't be able to use the fingerprint sensor, since the international ROM won't support it.
Do NOT buy!!!!

Cool story but I'll be buying. Can't wait!
Btw, it also not confirmed that it WON'T work. Don't you think it would be a good idea to wait and see.
Sent from my HTC U11 using Tapatalk

It seems you have some sort of personal agenda against Sony and/or this particular phone. An idealistic preference for what network(s) should be supported.
I don't know that I care if VoLTE is possible. I want to know if I can make/receive calls, text, access data for app and internet use.
The fingerprint scanner is irrelevant for me, it's there or not.
So simply said, will this work on US networks although some features may not be compatible.
Sent from my SM-G930V using XDA Free mobile app

Should be fine like every other Sony Compact I've had. Best Buy and Amazon will be selling it here shortly so one would logically assume they would be US carrier compatible in terms of calling/ data. I could give a crap about VoLTE.

From what I understand T-Mobile was sued a few years ago when someone couldn't make a 911 call in an area where there was only Band 12 LTE (since Band 12 goes through walls better than the 1900 MHz 2G and 1700 MHz 3G that T-Mo uses, apparently legally you are better off with no cell service than with only data service), because of that lawsuit T-Mobile asked phone makers to disable Band 12 on US devices that do not have VoLTE. (I can't post a source because I'm a new member but you can google this). It looks like the Band 12 blocking is done at the phone firmware level, not from T-Mobiles end, so there is a decent chance that the European firmware will not have Band 12 disabled. Though it will most likely also not support VoLTE on T-Mobile. You should still get good LTE data, you just might have to drop back to 3G or 2G for calls.
That said, this would need to be tested. It would be a shame if you had to choose between band 12 coverage without the fingerprint sensor, or a fingerprint sensor with band 12 coverage.
Either way I'm pretty psyched for this phone. I wish there was more competition in this space, but since Sony is the only game in town when it comes to non-phablet smartphones we really don't have much of a choice do we?

Phones re in and ... I am sadly correct.
Maybe if people spent more time to complain to T-Mobile, Sony, the FCC, the FTC and their Senator/congressman we would not have this issue.
Cell phone networks were supposed to let unlocked phones on ... VoLTE violates that.

Currently using my phone on tmobile just fine.
Getting LTE for data and no voice disconnects.
Could care less about volte; most people don't use their phones to talk anymore, myself included. Normal voice works fine for my needs. ¯\_(ツ)_/¯

christogold said:
That said, this would need to be tested. It would be a shame if you had to choose between band 12 coverage without the fingerprint sensor, or a fingerprint sensor with band 12 coverage.
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Sadly, some of us do.
theplasmastorm said:
Currently using my phone on tmobile just fine.
Getting LTE for data and no voice disconnects.
Could care less about volte; most people don't use their phones to talk anymore, myself included. Normal voice works fine for my needs. ¯\_(ツ)_/¯
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Click to collapse
Dont assume too much. Since band 12 is much better than bands 2 and 4 in many ways, t-mobile is often not only adding band 12 but using it to replace bands 2 and 4 (kinda makes sense, why would you upkeep obsolete bands). I have had T-Mobile for about a year with an older unlocked phone and they recently switched to a lot of band 12 all over my area/region and now I have lots of total deadzones (including my house). I need to be able to make/receive phone calls, as I'm sure many do. But, for your point, I do still have data, sometimes, it seems to be much weaker a lot of the time compared to what it used to though, but maybe that's just me. I recall coming across a list of cities/places where t-mobile plans to switch things to band 12 and the timeline.
Edit: I am not sure this was the exact article I originally viewed, but here's a link < http://www.prepaidphonenews.com/2017/07/tmo-lte-spectrum-update.html?m=1 >.

theplasmastorm said:
Currently using my phone on tmobile just fine.
Getting LTE for data and no voice disconnects.
Could care less about volte; most people don't use their phones to talk anymore, myself included. Normal voice works fine for my needs. ¯\_(ツ)_/¯
Click to expand...
Click to collapse
So to clarify, if it doesn’t have VoLTE, it just drops to LTE?
So if I flash UK firmware to get the fingerprint scanner (with AT&T) I just get LTE?
I don’t see why this is such a huge issue then, at least for me where I live I’ve never seen anyone with anything more than LTE anyway, it’ll be just business as usual. I also don’t make many phone calls so this doesn’t seem like anything that will hurt me with this phone one bit.

kobold98 said:
So to clarify, if it doesn’t have VoLTE, it just drops to LTE?
So if I flash UK firmware to get the fingerprint scanner (with AT&T) I just get LTE?
I don’t see why this is such a huge issue then, at least for me where I live I’ve never seen anyone with anything more than LTE anyway, it’ll be just business as usual. I also don’t make many phone calls so this doesn’t seem like anything that will hurt me with this phone one bit.
Click to expand...
Click to collapse
To clarify,
On AT&T, with US firmware, you can:
1] You get LTE data.
2] You can make calls over GSM or UMTS, but not over LTE. This will also drop your data rate to 3G if you are using voice and data simultaneously.
3] You get no fingerprint reader.
On AT&T, with European firmware, you can:
1] You get LTE data.
2] You can make calls over GSM or UMTS, but not over LTE. This will also drop your data rate to 3G if you are using voice and data simultaneously.
3] You get a working fingerprint reader.
The VoLTE certification and modem configurations are only for T-Mobile on US firmware and other operators on specific, non-US firmware variants.

pbarrette said:
To clarify,
On AT&T, with US firmware, you can:
1] You get LTE data.
2] You can make calls over GSM or UMTS, but not over LTE. This will also drop your data rate to 3G if you are using voice and data simultaneously.
3] You get no fingerprint reader.
On AT&T, with European firmware, you can:
1] You get LTE data.
2] You can make calls over GSM or UMTS, but not over LTE. This will also drop your data rate to 3G if you are using voice and data simultaneously.
3] You get a working fingerprint reader.
The VoLTE certification and modem configurations are only for T-Mobile on US firmware and other operators on specific, non-US firmware variants.
Click to expand...
Click to collapse
Thank you so much, it’s been hard to find a totally clear picture of this. As someone who doesn’t make a lot of phone calls (but does rely on LTE data) and never uses data during phone calls it sounds like I’ll be good to go with European firmware.

Thank you, that is a good summary for a fellow AT&T user. But one thing I am curious about. Does AT&T have VoLTE at all? Or is tmo the only one with that ability? Basically, if I bought a totally different phone specifically for AT&T would I get VoLTE?

Frontier3 said:
Thank you, that is a good summary for a fellow AT&T user. But one thing I am curious about. Does AT&T have VoLTE at all? Or is tmo the only one with that ability? Basically, if I bought a totally different phone specifically for AT&T would I get VoLTE?
Click to expand...
Click to collapse
AT&T only offers VoLTE (they brand it: HD Voice) via their own branded handsets (ones bought through them) or any iPhone 6 or newer (as i recall).

andTab said:
Phones re in and ... I am sadly correct.
Maybe if people spent more time to complain to T-Mobile, Sony, the FCC, the FTC and their Senator/congressman we would not have this issue.
Cell phone networks were supposed to let unlocked phones on ... VoLTE violates that.
Click to expand...
Click to collapse
Have you?

Any variants working with Fi AND ATT/Verizon etc?

Is anyone using a Moto X4 on Project Fi on one SIM (or eSIM), but can switch to another carrier on their second SIM (or eSIM).
I'm considering options for my next phone and need to have Verizon, ATT & Sprint's networks available. I know that the Pixel 2 XL can work like this. I don't want/need another bad experience with Pixel hardware after having my 2016 Pixel XL randomly die from the infamous defective motherboard after 16 months.
I've read a lot about the X4 and there are enough variants that I'm unsure which answers I can really trust.
I've read that there is a genuine dual physical SIM variant is only sold in Europe, but that European devices won't work on American CDMA networks. I've also read that the European variant has published support for the same bands as the US versions though, so I'm not sure what to think.
I've also read that Fi won't work on the eSIM of the Android One (assuming all US X4 too), so Fi must run on the physical SIM. Could Verizon work on the eSIM in this case?
I can't seem to find any conclusive answers, so I figure I'd ask here.
I'm especially interested in, and would be grateful for, feedback from those who have actually tried this.
Thanks!!!!

AFAIK the X4 doesn't have an esim.
For multiple sim this model supports the bands for all the networks you need except one of AT&Ts LTE bands which really wouldn't matter. I would make sure it's unlockable so it can't be software locked to country.
https://www.frequencycheck.com/comp...ual-sim-td-lte-am-32gb-xt1900-7/united-states

I bought a Project Fi Moto X4 and live in a remote coverage area. A local carrier US Cellular, is for this example =100% coverage. =Sprint 35% and =T-Mobile 20%.
So when I use a APP that can switch with Dialer Codes the three carriers Project Fi ON THE MOTO is odd in that automatic switching will only work once coverage is lost for
in my case...a undetermined time. No rhyme or reason for switching with loss of coverage or loss of data connection.
Now in a comparison of Receivers that work on a Project Fi SIM....carrier switching my Pixel 2 is twice as good in Receiver capture and hold in marginal coverage areas. Moto better that a Nexus 5x on 8.1 though. If you have excellent coverage then not as much of a concern.
On the eSIM it's not the best way to go, for the Pixel 2 my eSIM for project Fi was great, but if you have a SIM and a eSIM. The eSIM is priority on Boot start and can't be locked out. One or the other in fact if the eSIM is used, and a Project Fi SIM is installed too, the SIM is locked and nothing can be done but a Factory Network Reset and skip eSIM setup steps before SIM is enabled or locked. Oddly Pixel 2's are not all eSIM factory enabled. I have from a different problem..... had in total 4 Pixel 2's and 2 were eSIM factory enabled, 2 not.
My Moto is odd in that if a T-Mobile or Sprint carrier SIM is installed I have to have better that ~=20% and enough coverage capture time to configure that SIM's carrier provisioning. A SIM change means provisioning must happen again before data connection....remember my weak coverage area. PIA

note 9 verizon vs note 9 tmobile

I have an up to date verizon note 9 although still paying for it I had it on their service for over 6 months so legally allowed to use on another service currently using it on cricket with no issues other than no VOlte which I've never had with cricket no matter what phone because I won't use the phones they have because I don't like them but that's another story....Since I can't get volte on my Verizon model note 9 that's fully updated for US I was wanting to switch to tmobile...I was set up with a sim card on their magenta plus plan worked great till I got to my home which is in a more rural area but did show verified coverage at driveway on their map I had no signal so I went to settings searched for mobile networks found tmobile listed registered and it connected like 2 bars LTE but within min lost service did it again lost service again while I had lte I was able to call and use data...so my question is could this be me using a verizon phone for it not latching on by itself or holding the signal I know note 9 has the 600mhz band but was wandering if I went ahead and got a tmobile phone if it would actually latch on and hold the signal that Verizon's addons and changing is playing well with tmobile...UNLESS someone can tell me how to get VOlte on cricket with this note 9 then I wouldn't need tmobile then 3g calling has went to crap over a year....thankyou for any input

Terasman210 said:
I have an up to date verizon note 9 although still paying for it I had it on their service for over 6 months so legally allowed to use on another service currently using it on cricket with no issues other than no VOlte which I've never had with cricket no matter what phone because I won't use the phones they have because I don't like them but that's another story....Since I can't get volte on my Verizon model note 9 that's fully updated for US I was wanting to switch to tmobile...I was set up with a sim card on their magenta plus plan worked great till I got to my home which is in a more rural area but did show verified coverage at driveway on their map I had no signal so I went to settings searched for mobile networks found tmobile listed registered and it connected like 2 bars LTE but within min lost service did it again lost service again while I had lte I was able to call and use data...so my question is could this be me using a verizon phone for it not latching on by itself or holding the signal I know note 9 has the 600mhz band but was wandering if I went ahead and got a tmobile phone if it would actually latch on and hold the signal that Verizon's addons and changing is playing well with tmobile...UNLESS someone can tell me how to get VOlte on cricket with this note 9 then I wouldn't need tmobile then 3g calling has went to crap over a year....thankyou for any input
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All N960U and N960U1 devices are EXACTLY the same. The only difference between the devices is software.
Flash the software for the carrier your running including the Userdata for you Note 9. It should work for all features especially on T-Mobile. T-Movile fully allows unlocked devices on their network whereas Verizon doesn't. I'm pretty sure at&t is like Verizon through when it comes to unlocked devices, and they own cricket so that rule probably trickles down to them as well.
You can get all carrier version of software for your Note 9 on samfirm or sammobile

Jammol said:
All N960U and N960U1 devices are EXACTLY the same. The only difference between the devices is software.
Flash the software for the carrier your running including the Userdata for you Note 9. It should work for all features especially on T-Mobile. T-Movile fully allows unlocked devices on their network whereas Verizon doesn't. I'm pretty sure at&t is like Verizon through when it comes to unlocked devices, and they own cricket so that rule probably trickles down to them as well.
You can get all carrier version of software for your Note 9 on samfirm or sammobile
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But my question would be would my phone latch on to tmobile towers using tmobile firmware better than my current state using verizon firmware I'm excluding wifi calling and volte just trying to determine if I would have a difference in service availability picking up towers and holding them with stronger lte signal or if it's just poor coverage both ways and will be no different than you for your advice as well

Terasman210 said:
But my question would be would my phone latch on to tmobile towers using tmobile firmware better than my current state using verizon firmware I'm excluding wifi calling and volte just trying to determine if I would have a difference in service availability picking up towers and holding them with stronger lte signal or if it's just poor coverage both ways and will be no different than you for your advice as well
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You will not have a difference in coverage. T-Mobile did the same thing with where I live and listed it on their map as being fully covered. I barely get LTE at my house or anywhere in my neighborhood.

Jammol said:
You will not have a difference in coverage. T-Mobile did the same thing with where I live and listed it on their map as being fully covered. I barely get LTE at my house or anywhere in my neighborhood.
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Okay thank you for saving me the trouble of doing firmware swap or just buying a phone from them just to try and have same result and have to return....man I wish cricket would sell the note 10 or 9 where I could get the volte...but thankyou for your time

Terasman210 said:
Okay thank you for saving me the trouble of doing firmware swap or just buying a phone from them just to try and have same result and have to return....man I wish cricket would sell the note 10 or 9 where I could get the volte...but thankyou for your time
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You will never know until you try it, so why not try it and find out? Make it an SM-N960U1. Debloated and ready to go with any sim you install. Flash the unbranded firmware that can work on any of the US providers. That's what I have, and when I loaded a T-Mobile sim, I got VoLTE and wifi calling. I've run a lot of custom firmwares in the past, but this is the best phone and firmware combo I've ever had. And it's pure stock.
Also, this stock One UI with dark mode is very slick. VERY! No Substratum, no themes, no fuss. Just clean and black.

gruuvin said:
You will never know until you try it, so why not try it and find out? Make it an SM-N960U1. Debloated and ready to go with any sim you install. Flash the unbranded firmware that can work on any of the US providers. That's what I have, and when I loaded a T-Mobile sim, I got VoLTE and wifi calling. I've run a lot of custom firmwares in the past, but this is the best phone and firmware combo I've ever had. And it's pure stock.
Also, this stock One UI with dark mode is very slick. VERY! No Substratum, no themes, no fuss. Just clean and black.
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His goal is better service reception.
Only the carrier can fix that by actually providing the coverage they put on their maps.

Jammol said:
His goal is better service reception.
Only the carrier can fix that by actually providing the coverage they put on their maps.
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Lots of people have reported better or worse quality service, all other things equal except for firmware/software: different radios enabled/disabled; different optimizations. I just read another thread where someone got better tmobile reception at his house after flashing tmobile software over US unlocked software. There are more variables than just the carrier side of things.

gruuvin said:
Lots of people have reported better or worse quality service, all other things equal except for firmware/software: different radios enabled/disabled; different optimizations. I just read another thread where someone got better tmobile reception at his house after flashing tmobile software over US unlocked software. There are more variables than just the carrier side of things.
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Thankyou then that kinda answers my question that although phones are equal between verizon version and unlocked internally and firmware being the difference that using a tmobile phone with their firmware I'd stand the best chance of service and since my area uses extended range area I would probably have a better experience than on my note 9 verizon...thankyou again

Terasman210 said:
Thankyou then that kinda answers my question that although phones are equal between verizon version and unlocked internally and firmware being the difference that using a tmobile phone with their firmware I'd stand the best chance of service and since my area uses extended range area I would probably have a better experience than on my note 9 verizon...thankyou again
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Yes. I think it may make no difference at all, or it might (much to gain, but nothing to lose), but most of the evidence in these forums, when it comes to connection quality, is extremely variable and anecdotal. Nobody can know an answer to this kind of question, unless they test it out for themselves. Good luck!