Database Develop

3G in the USA

Has any been able to get 3G to work in the USA yet?
thank you,
jdm

I would say that it is imminent that the US version of the S730 will be released soon. AT&T or T-Mobile may pick it up (T-Mobile's 3G network in NYC just went live, but there are no phones). If so, I would suspect that some of these crafty folks (like Alcaline) would be able to extract the radio ROM, and make it available for the S730 that we all have (the european version).
But, here's the most important part... It all depends on whether or not the European version of the S730 has the radio chipsets that will support 3G on the frequencies that are 3G in the US. There is no known answer "available" to this, so it can only be discovered by testing.

The current S730 uses the 2100 band for 3G speeds and ATT is deploying 3g on 1900 and 850 I believe and they sell a decent ammount of 3g phones. T-Mobile is working on setting one up on the 1700/2100 band but I dont care for T-Mobile.
I have watched my phone at times flip into 3G mode for a few minutes then revert back to Edge, its trying but cant work properly without the right frequencies.

Check out the chipset datasheet. Bottom of page three explains the specific radio chipset combos and their support for different freqs.
I suppose, to save on manufacturing costs, they could have used the single chipset that supports 3G on all freqs (RTR 6285), but I believe this is unlikely due to the difference in model number that was submitted to the FCC (European version: WING220, US version: WING200).
Who knows though.

3G in US
Hermes models had different model #'s HERM100, HERM200 and had the same radios, in some cases minor difference such as case style, i.e removal of video calling camera etc. With any luck we have the RFR6500 + RTR6275 Combo, or as you mentioned the RTR6285 and just not a radio rom that allows 1900+850 3G. I was looking on the FCC site and they have some interesting screen shots, one of which shows one(s730) with what appears to be the front camera covered up and another which shows a radio rom(R 0.27.03.05B), one that, to do the tests would likely need to support 1900+850. Check Page 250 / 11 in the PDF. However, also in the test is the lack of any mention of 2100 Mhz test, which would suggest that either the US 3G Radio won't support 2100Mhz or that it indeed has different hardware that won't support 2100Mhz. At any rate it would be interesting to know if anyone has tried to flash one of the pre-prod roms for the wing 200 onto the wing220 and see if they are able to connect up to 1900+850 3G.
http://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=890469&native_or_pdf=pdf
I suppose only time will tell.

Wow... nice investigative work. Very interesting. I'll start hunting around for the ROM.
[edit]
Searched google and, my favorite, napalm with no luck. I wonder if we can lure an FCC testing engineer into the XDA-dev realm. muahahaha

I was searching some of the other posts, and it appears that most of the pre-prod radio rom testing had been focused on GPS functionality. Has anyone been able to throw on any of the pre-prod radios with an ATT SIM and tested to see if it can connect to WCDMA -> US Band (1900+850) ??

I have no possibility to check the 3G in the USA from my location in Norway.
But just to get this clear, because I have changed my Radio more often then most people change their underweare.
Is everybody able to select WCDMA and then US Band in the settings?
I dont know if this is selectable on all devices or if this is made available after my radio flahings.

I believe all S730's have the following options available.
Network Type:
Auto
GSM
WCDMA
Band Type:
Auto
US Band
Euro Band
Japan Band
For it to actually be able to operate on all of these frequencies I believe it would need to use the the RTR6285 chipset as the other 2 combos would not support all of the different frequencies combinations.
US Band -> GSM 850+1900 / UMTS 850+1900 (ATT)
Euro Band -> GSM 900+1800 / UMTS 2100
Japan Band -> UMTS 2100+800 (not positive on this one)
If I change band to from Auto -> WCDMA I do not get an error but no 3G Icon and all calls fail. If I then go and change to US Band while having WCDMA selected it indicates that it cannot change to that GSM/UMTS Band. Also interesting, If I stay on WCDMA and select Euro Band, no error, but of course all calls fail. I then tried to change to Japan Band, no error and no phone calls. Finally I am still on WCDMA and I switch to US Band and I get the error that indicates I cannot change to that band. So, I would be interested to know Alcaline if you see the same behavior on some of the other radios you have been trying to see they allow the switch to WCDMA / US Band combo.
Thanks

Can anyone else confirm this behavior on any of the other Radios out there?

Alcaline said:
I have no possibility to check the 3G in the USA from my location in Norway.
But just to get this clear, because I have changed my Radio more often then most people change their underweare.
Is everybody able to select WCDMA and then US Band in the settings?
I dont know if this is selectable on all devices or if this is made available after my radio flahings.
Click to expand...
Click to collapse
I have the ability to tell my phone I am in the states, but it does nothing (default settings though)

Was the US version (WING200) of this phone ever released? Or has anyone gotten the EU version to work on any US 3G networks? Wondering about T-Mobile...

[Q] Blu WinHD - change 3G bands

Hello,
I need help with a Blu WinHD: I purchased one while in the US as a replacement for my broken phone, but once back in Europe I discovered I had no 3G connection.
A quick web search and I found my model variant (W510U) only supports 3G/HSDPA at 850/1900/1700 MHz, while my Italian provider offers 900/2100 MHz bands (Vodafone IT). However, another variant does exist (W510 L), and actually supports 850/1900/2100 MHz.
Since both phones feature the same SoC (Qualcomm MSM8212 - Snapdragon 200), will it be possible to change the 3G band used by my version? I was thinks about flashing the other variant firmware, or trying some dial string and see whether I can change Cell Network settings...
Any tips?
pdadb.net/index.php?m=specs&id=6801&view=1&c=blu_w510l_win_hd
pdadb.net/index.php?m=specs&id=6802&view=1&c=blu_w510u_win_hd
en.wikipedia.org/wiki/List_of_mobile_network_operators_of_Europe#Italy

I'm looking for the same
A quick search online gave me this:
http://www.clangsm.com/forum/index.php?showtopic=375734&pid=1525955&st=0&#entry1525955
BLU_W510l_V9059_GENERIC_Retail_20140903.rar
You need to be a VIP to download that. But still, I don't know which flashing tool should be used :/
Don't forget to reply if you find anything relevant!
anthonws

I'm not sure. But the 3G bands always had been a hardware thing. So you can't change it changing firmware or something. It's not like unlock, it just doesn't have them.

@anthonws Wonderful, I'll try to decompile this firmware in order to discover whether there are some dial strings that could help. But of course, being able to flash it at once would have been better. I'll look for any other flashing options as well.
@m1k3_ I was thinking the same at first, but later on I couldn't explain myself how could that be possible with the very same SoC on both model variants: if the SoC embeds the radio controller, what else can pilot the 3G bands? I would have better to get the chance to read the detailed datasheet of the Snapdragon 200...

Unfortunately, I finally got a reply from BLU Support Service, stating that 3G bands are actually hard-coded, so no software change can actually modify them....
I'm very sorry about that, I got to like this phone very much....

unsafecode said:
Hello,
I need help with a Blu WinHD: I purchased one while in the US as a replacement for my broken phone, but once back in Europe I discovered I had no 3G connection.
A quick web search and I found my model variant (W510U) only supports 3G/HSDPA at 850/1900/1700 MHz, while my Italian provider offers 900/2100 MHz bands (Vodafone IT). However, another variant does exist (W510 L), and actually supports 850/1900/2100 MHz.
Since both phones feature the same SoC (Qualcomm MSM8212 - Snapdragon 200), will it be possible to change the 3G band used by my version? I was thinks about flashing the other variant firmware, or trying some dial string and see whether I can change Cell Network settings...
Any tips?
pdadb.net/index.php?m=specs&id=6801&view=1&c=blu_w510l_win_hd
pdadb.net/index.php?m=specs&id=6802&view=1&c=blu_w510u_win_hd
en.wikipedia.org/wiki/List_of_mobile_network_operators_of_Europe#Italy
Click to expand...
Click to collapse
I brought BLU HD W510U as well. But my question is : does your W510U have iuminous backlight for back key, home key, search key at night time?

Need Expert Help Modifying ROM

Hoping I can get some help here as I've been working on this for about a month now. I've seen quite a few people with this same problem but found no solutions so far. So I'm trying to modify stock and custom ROMs and stock firmware to work on my G900P. I'll upload the resulting files to share with others who need them. Not looking to be spoon fed, just looking for some guidance.
I bought a Galaxy S5 from a Canadian shop on Ebay. It's a G900P, from Sprint. I'm on Petro Canada Mobile (Rogers) and the stock G900P firmware won't allow me to make calls, text, or use data. It also has all the Sprint bloatware, which I want to get rid of. I've rooted the phone and flashed some ROMs (SuperLite and S5 DreamUX A7 V2) and they do work, albeit in a limited way. With these ROMs I can make calls, text, and use data, but I can not get Rogers higher bands because the phone seems to be stuck on the CDMA (all the firmware and ROMs I've used all use CDMA in the code of the files) settings or some other issue, (most likely through CSC files and build.prop) and can not change to APN protocols to enable IPv4/IPv6 (the option is on IPv4 and greyed out so I can't change it. My carrier uses GSM (850/1900 Mhz, GPRS, Edge), UMTS (B2 1900 PCS, B5 850, 3G, HSPA+ 3.5G ) , and LTE (B4 1700/2100 AWS 1, B7 2600, B17 700 bc). I've spoken with a tech and they said the G900P is compatible will all the bands except the LTE bands. They never mentioned whether this was due to firmware or hardware restrictions.
I've played with the build.prop files, and the Sprint CSC files but nothing has worked so far. So what I'd like to do is modify either the GP900W8 firmware to be compatible with the G900P phone, or the G900P firmware to be compatible with the carrier. If this isn't possible I'd like to customize an existing ROM to do the same. From what I've learned so far it seems I need to modify the build.prop and CSC (and possibly other files) to use the bands my carrier uses instead of the CDMA bands, but I haven't used the correct code or modified the correct lines, or missed something in another file, etc.... I'd also like to try and get this phone to be able to use the LTE bands if possible.
Any help with this project would be greatly appreciated. Thanks in advance.
P.S. If this isn't possible and someone knows of a ROM or firmware I can use on my carrier and get the higher bands could you please let me know. I'm still gonna work on this project, but would like to use my phone while I do it LOL.

https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059

Unlocked Sprint LG V40 for use on Tmobile

I'm novice to the whole rooting scene so please cope with me.
I found a good deal on almost new Lg v40 from a Sprint user.
We'll meet at Sprint store to verify device is paid off and unlock it.
Once Sprint unlocks it, can I just use this device on Tmobile with my Tmobile sim and will it have band 71 or do I need to have Tmobile fw on it to open band 71 ?
Lg website lists in specs for sprint model (model LM-V405UA) as having band 71.
Can anyone confirm ?

rdx2019 said:
I'm novice to the whole rooting scene so please cope with me.
I found a good deal on almost new Lg v40 from a Sprint user.
We'll meet at Sprint store to verify device is paid off and unlock it.
Once Sprint unlocks it, can I just use this device on Tmobile with my Tmobile sim and will it have band 71 or do I need to have Tmobile fw on it to open band 71 ?
Lg website lists in specs for sprint model (model LM-V405UA) as having band 71.
Can anyone confirm ?
Click to expand...
Click to collapse
I don't think Sprint uses the same LTE bands.

Mine works just fine on T-mobile as of a week or so ago when i got it .Mine is the Sprint version full network & Factory UNLOCKED.
To make sure your GSM unlocked go to system/system-updates--
Then look in the list UICC Unlock it should say -----( The Device is unlocked for any SIM card )

zxhwk said:
Mine works just fine on T-mobile as of a week or so ago when i got it .Mine is the Sprint version full network & Factory UNLOCKED.
To make sure your GSM unlocked go to system/system-updates--
Then look in the list UICC Unlock it should say -----( The Device is unlocked for any SIM card )
Click to expand...
Click to collapse
*Edit - confirmed band 71 is only active in the tmo model, I went with it vs an unlocked variant*
Are you able to use band 71/600mhz? I've seen comments suggesting band 71 isn't enabled in any other model besides tmo, even though specs show all variants having the same band capability.
I'm in the same boat, on tmo & tempted by the lower priced unlocked variant, but would like to confirm band 71 is usable before ordering one.

my sprint v40 was working on t mobile for about two weeks then it went dead and lost its network settings now i cant seem to get it back on tmobile some1 help ! i did the uicc unlock and enable oem unlock

brian9291 said:
my sprint v40 was working on t mobile for about two weeks then it went dead and lost its network settings now i cant seem to get it back on tmobile some1 help ! i did the uicc unlock and enable oem unlock
Click to expand...
Click to collapse
OEM unlock is specifically for bootloader unlocking not network unlocking..

I will be able to report back in about a week whether band 71 works.
I bought the Sprint version of the V40.
I am on Sprint now.
I am crossflashed to US.
I am switching to T-Mobile at the end of the week.
I live in a Band 71 market.
[NG]Owner

So I have switched to TMobile.
I used the hidden Service Menu ( *#546368#*405# ) to force the phone to Band 71. It did not connect to Band 71, instead to Band 2, as reported by LTE Discovery.
I then used the hidden Service Menu ( *#546368#*405# ) to force the phone to Band 12. It did connect to Band 12 as reported by LTE Discovery.
So either band 71 doesn't work, or I don't have access to Band 71 from my house. I have heard that there are confirmed Band 71 sightings in Kansas City, so I will go there to try. Once I do I'll report back.
Both VoWiFi and VoLTE are listed as provisioned.
[NG]Owner

Can somebody also confirm band 71 compatibility? I'm looking to get a Sprint V40 but I'm not sure if cross flashing will enable band 71. Also can somebody confirm if services such as VoLTE, HD Voice, and Wi-Fi calling will work on a cross flashed device? Also how exactly do you force gsm bands if it gives you a checklist? Do you just remove all the bands but one? Also will crossflashing to unlocked make OTA stop working? If so, why does it not work?

So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner

NGOwner said:
So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner
Click to expand...
Click to collapse
After you cross flashed, do services like VoLTE, HD Voice, and Wi-Fi calling still work?
---------- Post added at 09:59 PM ---------- Previous post was at 09:52 PM ----------
NGOwner said:
So I have to amend my previous post:
I can confirm the following:
Using the Hidden Service Menu from this post, and several apps out of the Play store, my phone sees T-Mobile bands 2, 4, 12 and 71 towers. And I have successfully been connected to a Band 71 tower.
Oddly enough, LTE Discovery still reports the connection as a different band. So I'm going with the Hidden Service Menu as definitive.
[NG]Owner
Click to expand...
Click to collapse
Also how were you able to open that hidden menu. I entered in the code and nothing happens.

jimmysofat6864 said:
After you cross flashed, do services like VoLTE, HD Voice, and Wi-Fi calling still work?
Click to expand...
Click to collapse
Not sure what you mean by still. I was on Sprint. Received Sprint v40. Immediately crossflashed to US version. Used phone on Sprint. Migrated to T-Mobile. VoLTE, HD Voice, and Wi-Fi calling work. That was the sequence. I have no idea if Sprint has those features or if they work on Sprint. But on T-Mobile with a cross flashed to US version v40, those services work just fine for me.
Now if you are thinking of crossflashing a T-Mobile v40, stop right now. You'll brick it. There is nothing you can do to a TMo v40.
jimmysofat6864 said:
Also how were you able to open that hidden menu. I entered in the code and nothing happens.
Click to expand...
Click to collapse
I assume you are also entering it into the phone dialer. I type in the code, and the hidden service menu appears. If it's not working for you, I don't know why not.
[NG]Owner

I was referring to a sprint model phone but was nice to know everything works. Just have to wait and see if OTA updates work.

Question S21 Ultra, originally T-Mobile, now Visible (Verizon), but doesn't have correct bands for 5g

I bought an unlocked S21 Ultra last fall that was originally sold by T-Mobile, and I initially used it with H2o (AT&T) and it always worked fine, though it never got 5g service, though I'm not sure that 5g has been implemented yet by AT&T in the Phoenix market, at least not the C-band
On Jan 21, it automatically updated the software so that it now shows SM-G998U_OYN_ATT_12_0018 ATT/XAA,TMB/TMB as the Service provider software version, so it seemingly has both AT&T and T-Mobile software at this time. At that time, it also switched from showing the T-Mobile logo on bootup to showing the AT&T logo, and I think it added, NR B66 as an additional radio band (in addition to NR B41, B71 and the UW bands of B260 and B261). Earlier this week I switched to Visible and while it works fine on 4g LTE, I'm not getting any 5g connectivity. In researching bands, the only one that I have that Verizon uses is the NR B66, while I probably really need NR B2, B5 and in particular B77 to get the new C-band.
The question is, will the phone at some point automatically update to VZW software, and at that point enable additional bands that I need to get 5g? Or is there a way of forcing this? Or what is the best option to enable 5g on this phone? I really don't want to switch to the U1 software as that seems to require a factory reset, and I'm not keen on going through reconfiguring everything again and getting all my icons back where I want them.
Or will this phone not support these bands unless the U1 software is first installed?
Thanks!

Anyone?

Have you tried switching to a Verizon compatible firmware?
With ODIN, you can switch firmwares without losing data.
I suggest trying that, US carrier optimization is known to be the worst

No, I have not tried that. Sorry to ask a dumb question, but what firmware should I use, and where do I find it? I ask because the "official" firmware seems to be from Jan 2021, and it seems to be the U1 option, not carrier specific firmware. I've done some searching, but I haven't been able to find the Verizon version so far. Thanks.

I'm on an European 21U, for the USA version, you need to check this guide
G998U and G998U1 Firmware Links and Flashing Discussion Here
For those who aren't already aware, G998U is the model number of all of the US carrier versions of the S21 Ultra. The G998U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100%...
forum.xda-developers.com

RedWave31 said:
I'm on an European 21U, for the USA version, you need to check this guide
G998U and G998U1 Firmware Links and Flashing Discussion Here
For those who aren't already aware, G998U is the model number of all of the US carrier versions of the S21 Ultra. The G998U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100%...
forum.xda-developers.com
Click to expand...
Click to collapse
I think you need to go from U1 to U (VZW) to see if that solves it.
Can't help on anything else, since on Exynos (European) devices, flashing is much easier than on Snapdragon devices.

I read the link above in detail, and it says that the only difference in the 5 files is the "USERDATA", otherwise the other 4 files are identical between vendors. So USERDATA seems to be a critical file in regards to switching from T-Mobile to Verizon. My concern is that further down in the first article it says that flashing the USERDATA file will wipe the existing data.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Flashing USERDATA will also wipe data.
If this is true, and the only way to manually get the VZW info that I'm looking for without flashing to U1, there doesn't seem to be any advantage to flashing this using Odin, as it'll also wipe my user data. In other words, if I go that route, I'd be better off just flashing to U1, and try that. Theoretically, this should give me everything that I need without first flashing to VZW, and if it'll work with Verizon/Visible without the VZW bloatware, then that would definitely be preferred.
My entire reason for trying all this is to try to get the additional NR radio bands, specifically N2, N5 and N77, which I don't have with the T-Mobile software.
As for backing up the phone and then restoring it, does Odin provide this capability? Or is Samsung Kies a much better option? The Kies software seems to be made for this, so if this is the case and it'll exactly restore the phone like it was before, then it wouldn't actually be a big deal to backup, flash and then restore the phone.

it's a problem with the T-Mobile S21 series, you need to flash U1 software.

Not really what I wanted to hear, but sounds like you have experience with this. I take it that the factory T-.Mobile software (or is it firmware?) essentially locks out the NR bands that they don't have, even if other software is installed on top of it. Thx

Last night I broke down and flashed it with the U1 XAA firmware, using the CSC (not Home) file. It went well, finishing the flash in <4 minutes. Then spent the next 4+ hours reconfiguring things that aren't automatically restored by using SmartSwitch to restore. I'm not sure how that works, but it seems that it doesn't actually back up the apps, rather it just backs up the name and placeholder, so when it's restored it has to redownload every single stinking app again. Plus, I had to go through and relog into every app where this is an issue, plus because it's now called SM-G998U1, I had to delete all the old G998U devices in various places, particularly Google. What a pain... Kind of wish I'd tried the Home CSC, particularly after what I see below.
What's interesting is that I know have the N2, N5, N66, plus the N77 and N78 C-bands, (as well as N260) but I lost the T-Mobile specific bands of N41 & N71, in addition, I also lost N261. I don't care about these as I'm not in an area where the Ka millimeter wave bands matter. However, I do find it interesting that the U1 firmware removed the TMB specific 5g bands. I would have thought that the Factory U1 firmware would automatically support all US carrier bands, but I guess not.
I'm using Visible (Verizon MVNO), and while it worked "decently" before, it's now orders of magnitude better than it was previously as a U device. I debated installing the VZW firmware, but decided not to, and I most definitely don't want to go through setting everything up again. However, I know have a MUCH better signal at my house, a consistent 5 bars, and a signal right around a 89-90 dB, while previously it hovered around 105-109 dB, which is pretty marginal, particularly when the antenna is only about 1/3 mile away. It also now tells me that I'm on LTE+ (rather than LTE 4g like before), so apparently this particularly tower isn't 5g yet, and I haven't left the house yet to see what I get at other locations from other towers.
However, what's really astounding is the speeds that I know get. Previously, download speeds would always start off slow at around 10 - 15 Mbs, and eventually get up to around 60 - 70 on the average, with upload speeds typically maxing out around 15 Mbs. However, now, I'm getting consistent download speeds of right at 240 Mbs (Visible limits max speed to around 250 Mbs on 5g), and upload speeds of ~70 Mbs. It's an incredible difference, so my suspicion is that I may be getting some 5g speeds, even though both Network Cell Info and LTE Discovery apps tell me that I'm generally only connected to the B2 and B5 LTE bands. Or maybe it's possible to get that kinds of speeds out of LTE with the new technology (forget what it's called) that shares bands at the same time, hence the LTE+ moniker.
Also, even though I installed the CSC file, the Service Provider Software is still ATT/TMB. To be specific, it's SAOMC_SM-G998U1_OYM_ATT_12_0026 ATT/ATT,ATT/TMB, and there isn't VZW anywhere. Maybe this will eventually update I don't know. However, it did remove the ATT startup splash screen that I had previously, so that's changed.
It also automatically downloaded and installed One UI 4.1 afterwards, so that seems to be working properly. Any thoughts on any of the above?
Thanks for the help that was provided previously.

kmdigital said:
Last night I broke down and flashed it with the U1 XAA firmware, using the CSC (not Home) file. It went well, finishing the flash in <4 minutes. Then spent the next 4+ hours reconfiguring things that aren't automatically restored by using SmartSwitch to restore. I'm not sure how that works, but it seems that it doesn't actually back up the apps, rather it just backs up the name and placeholder, so when it's restored it has to redownload every single stinking app again. Plus, I had to go through and relog into every app where this is an issue, plus because it's now called SM-G998U1, I had to delete all the old G998U devices in various places, particularly Google. What a pain... Kind of wish I'd tried the Home CSC, particularly after what I see below.
What's interesting is that I know have the N2, N5, N66, plus the N77 and N78 C-bands, (as well as N260) but I lost the T-Mobile specific bands of N41 & N71, in addition, I also lost N261. I don't care about these as I'm not in an area where the Ka millimeter wave bands matter. However, I do find it interesting that the U1 firmware removed the TMB specific 5g bands. I would have thought that the Factory U1 firmware would automatically support all US carrier bands, but I guess not.
I'm using Visible (Verizon MVNO), and while it worked "decently" before, it's now orders of magnitude better than it was previously as a U device. I debated installing the VZW firmware, but decided not to, and I most definitely don't want to go through setting everything up again. However, I know have a MUCH better signal at my house, a consistent 5 bars, and a signal right around a 89-90 dB, while previously it hovered around 105-109 dB, which is pretty marginal, particularly when the antenna is only about 1/3 mile away. It also now tells me that I'm on LTE+ (rather than LTE 4g like before), so apparently this particularly tower isn't 5g yet, and I haven't left the house yet to see what I get at other locations from other towers.
However, what's really astounding is the speeds that I know get. Previously, download speeds would always start off slow at around 10 - 15 Mbs, and eventually get up to around 60 - 70 on the average, with upload speeds typically maxing out around 15 Mbs. However, now, I'm getting consistent download speeds of right at 240 Mbs (Visible limits max speed to around 250 Mbs on 5g), and upload speeds of ~70 Mbs. It's an incredible difference, so my suspicion is that I may be getting some 5g speeds, even though both Network Cell Info and LTE Discovery apps tell me that I'm generally only connected to the B2 and B5 LTE bands. Or maybe it's possible to get that kinds of speeds out of LTE with the new technology (forget what it's called) that shares bands at the same time, hence the LTE+ moniker.
Also, even though I installed the CSC file, the Service Provider Software is still ATT/TMB. To be specific, it's SAOMC_SM-G998U1_OYM_ATT_12_0026 ATT/ATT,ATT/TMB, and there isn't VZW anywhere. Maybe this will eventually update I don't know. However, it did remove the ATT startup splash screen that I had previously, so that's changed.
It also automatically downloaded and installed One UI 4.1 afterwards, so that seems to be working properly. Any thoughts on any of the above?
Thanks for the help that was provided previously.
Click to expand...
Click to collapse
As a UK user of Snapdragon that's very interesting that you get n78 c band. I am on
the G998w version and here is my dialler code *#2263# result. As you can see it has no n78 which is important in the UK. Could I see your result just to check all the bands?

Ptuk said:
As a UK user of Snapdragon that's very interesting that you get n78 c band. I am on
the G998w version and here is my dialler code *#2263# result. As you can see it has no n78 which is important in the UK. Could I see your result just to check all the bands?
Click to expand...
Click to collapse
Here you go. As you can see I have both N77 and N78 bands. What I find interesting is that it says Sim 1 is ATT, which isn't what I'm using.
Ptuk said:
As a UK user of Snapdragon that's very interesting that you get n78 c band. I am on
the G998w version and here is my dialler code *#2263# result. As you can see it has no n78 which is important in the UK. Could I see your result just to check all the bands?
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Here you go. What's interesting is that it says Sim 1 is ATT, which isn't what I'm using.

Thank you. Yes weird the att thing. I think I will give it a crack to move to u1. Seems that the differentiation between exynos and snapdragon has fallen and that channels are no longer an impediment to using snapdragon in Europe. I also got ota update of my w phone in UK which I wasn't sure would happen.

Ptuk said:
Thank you. Yes weird the att thing. I think I will give it a crack to move to u1. Seems that the differentiation between exynos and snapdragon has fallen and that channels are no longer an impediment to using snapdragon in Europe. I also got ota update of my w phone in UK which I wasn't sure would happen.
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Yeah, I see that you don't have any C-bands, plus you have the TMB N41 and N71 bands, which is very similar to what I had prior to the U1 flash, but lost for some reason with U1, possibly because it seems to think that it's ATT for some reason. I'd be very interested in knowing what bands you have after a U1 flash.

I'll tell you as soon as I've got the nerve to do another flash!

@Ptuk and @kmdigital , will follow your conversation as I'm needing the N78 5g band. I flashed G998W last night but no luck. Weird is that I was from U then U1 but did not have get to see the N78 band appear.
@kmdigital , can you point me out on which firmware you have installed so I can try and how you actually flashed it. Thanks. Badly needing n78.

mapl.ph said:
@Ptuk and @kmdigital , will follow your conversation as I'm needing the N78 5g band. I flashed G998W last night but no luck. Weird is that I was from U then U1 but did not have get to see the N78 band appear.
@kmdigital , can you point me out on which firmware you have installed so I can try and how you actually flashed it. Thanks. Badly needing n78.
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Sorry to clarify....you flashed from G998w to u then u1? If so can you tell me which u1 you used...I'm wondering whether kmdigitals success is Verizon related or not

Ptuk said:
Sorry to clarify....you flashed from G998w to u then u1? If so can you tell me which u1 you used...I'm wondering whether kmdigitals success is Verizon related or not
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I was originally on G998U then flashed to G998U1 and nothing was changed. Hoping using an universal U1 firmware I would get the N78 band but no luck.
Then, last night I flashed to G998W and lost 260 and 261. Same result no n78 band. I would like to know how @kmdigital was able to get the N78 which I badly need. On download mode my s21 ultra shows ATT at the upper part.
From G998U1UES5BVC1 to G998WVLS5BVAB. I cant recall which G998U I had prior to U1

mapl.ph said:
@Ptuk and @kmdigital , will follow your conversation as I'm needing the N78 5g band. I flashed G998W last night but no luck. Weird is that I was from U then U1 but did not have get to see the N78 band appear.
@kmdigital , can you point me out on which firmware you have installed so I can try and how you actually flashed it. Thanks. Badly needing n78.
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Yes, I downloaded it from SamFw.com, file name Samfw.com_SM-G998U1_XAA_G998U1UES5BVC1_fac

kmdigital said:
Last night I broke down and flashed it with the U1 XAA firmware, using the CSC (not Home) file. It went well, finishing the flash in <4 minutes. Then spent the next 4+ hours reconfiguring things that aren't automatically restored by using SmartSwitch to restore. I'm not sure how that works, but it seems that it doesn't actually back up the apps, rather it just backs up the name and placeholder, so when it's restored it has to redownload every single stinking app again. Plus, I had to go through and relog into every app where this is an issue, plus because it's now called SM-G998U1, I had to delete all the old G998U devices in various places, particularly Google. What a pain... Kind of wish I'd tried the Home CSC, particularly after what I see below.
What's interesting is that I know have the N2, N5, N66, plus the N77 and N78 C-bands, (as well as N260) but I lost the T-Mobile specific bands of N41 & N71, in addition, I also lost N261. I don't care about these as I'm not in an area where the Ka millimeter wave bands matter. However, I do find it interesting that the U1 firmware removed the TMB specific 5g bands. I would have thought that the Factory U1 firmware would automatically support all US carrier bands, but I guess not.
I'm using Visible (Verizon MVNO), and while it worked "decently" before, it's now orders of magnitude better than it was previously as a U device. I debated installing the VZW firmware, but decided not to, and I most definitely don't want to go through setting everything up again. However, I know have a MUCH better signal at my house, a consistent 5 bars, and a signal right around a 89-90 dB, while previously it hovered around 105-109 dB, which is pretty marginal, particularly when the antenna is only about 1/3 mile away. It also now tells me that I'm on LTE+ (rather than LTE 4g like before), so apparently this particularly tower isn't 5g yet, and I haven't left the house yet to see what I get at other locations from other towers.
However, what's really astounding is the speeds that I know get. Previously, download speeds would always start off slow at around 10 - 15 Mbs, and eventually get up to around 60 - 70 on the average, with upload speeds typically maxing out around 15 Mbs. However, now, I'm getting consistent download speeds of right at 240 Mbs (Visible limits max speed to around 250 Mbs on 5g), and upload speeds of ~70 Mbs. It's an incredible difference, so my suspicion is that I may be getting some 5g speeds, even though both Network Cell Info and LTE Discovery apps tell me that I'm generally only connected to the B2 and B5 LTE bands. Or maybe it's possible to get that kinds of speeds out of LTE with the new technology (forget what it's called) that shares bands at the same time, hence the LTE+ moniker.
Also, even though I installed the CSC file, the Service Provider Software is still ATT/TMB. To be specific, it's SAOMC_SM-G998U1_OYM_ATT_12_0026 ATT/ATT,ATT/TMB, and there isn't VZW anywhere. Maybe this will eventually update I don't know. However, it did remove the ATT startup splash screen that I had previously, so that's changed.
It also automatically downloaded and installed One UI 4.1 afterwards, so that seems to be working properly. Any thoughts on any of the above?
Thanks for the help that was provided previously.
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When on U1 firmware, the device will restart upon a SIM card being inserted and load the bands needed for that provider. However, I have seen with certain MVNO's it doesn't act the same as a major Carrier when on U1, meaning that it will not register properly (why it still shows ATT for csc and not VZW). It seems that the csc is ATT because it doesn't register your SIM as VZW. Try to find a VZW SIM (doesn't need service) and allow the restart, then put back in your Visible SIM. My guess is the phone will not ask for a restart and will have the Verizon bands loaded from the restart when you inserted the VZW SIM.