Flash N. American ROM to European Model for 4G in the U.S.? - OnePlus 3T Questions & Answers

I live in Europe most of the time but am periodically back in the U.S. for months at a time. The different OnePlus 3T models support different 4G bands.
I'm wondering if anyone knows whether it is possible to flash a ROM for the N. American model to a European model in order to get 4G support in the U.S.? In other words, are the 4G bands a matter of hardware or software?

There are no different ROMs for American, Chinese and European OxygenOS. Only difference is in the factory bundled encrypted modem partitions which contains the IMEI and regional band frequencies lock-down as to not anger military or other organizations that may be using those bands in those countries.

Network support is mediated by a mix of hardware and software. Unfortunately, flashing a ROM will not be able to enable greater comparability. It supposedly is possible to flash radio images, which typically isn't changed during ROM updates, though it is a bit sketchy and can only unlock a few bands. You can read up on it here:
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563

Some bands are in both. Maybe it's enough for you.

Related

Where can I buy an unlocked Note 3 N9005 that would work with AT&T?

I have a Note 2 that I bought from AT&T. I want to upgrade to the note 3 but I want the N9005 version because I believe that it will be able to use G4 LTE signal from AT&T. The only place that I can buy the unlocked N9005 version is at Negri Electronics. However it only sell the 16 gb version and I want the 32 gb version. Is there any other place in the U.S.A that sells the N9005 unlocked version?
Earthbrain said:
I have a Note 2 that I bought from AT&T. I want to upgrade to the note 3 but I want the N9005 version because I believe that it will be able to use G4 LTE signal from AT&T. The only place that I can buy the unlocked N9005 version is at Negri Electronics. However it only sell the 16 gb version and I want the 32 gb version. Is there any other place in the U.S.A that sells the N9005 unlocked version?
Click to expand...
Click to collapse
I don't think there is such a thing like a 16gb note 3. At least not yet.
xclub_101 said:
I don't think there is such a thing like a 16gb note 3. At least not yet.
Click to expand...
Click to collapse
http://negrielectronics.com/phones/android-mobile-c-67.html
According to the above link...the 16 gb version does exist.
Does the n9005 model have AT&T LTE for sure?
Sent from my LG-D800 using XDA Premium 4 mobile app
Earthbrain said:
I have a Note 2 that I bought from AT&T. I want to upgrade to the note 3 but I want the N9005 version because I believe that it will be able to use G4 LTE signal from AT&T. The only place that I can buy the unlocked N9005 version is at Negri Electronics. However it only sell the 16 gb version and I want the 32 gb version. Is there any other place in the U.S.A that sells the N9005 unlocked version?
Click to expand...
Click to collapse
Before committed to pay big $ for the phone ... check out this thread
http://forum.xda-developers.com/showthread.php?t=2457964
I'd buy what you're looking for in a heartbeat - if it existed. So far it doesn't. At least not ln any of the N3's for the UK, EU, or Latin America that have been announced. The Korean S-800 SGS4 supports AT&T's bands so their N3 probably will also. But the Korean phones have funky TV h/w and a funky MMS system that's different than Western versions. Rogers' (Canada) version will be compatible with AT&T LTE and may be closer to "virgin" than AT&T's version. The challenge is warranty service both because you'd have to send it to Canada for repair (assuming Rogers' services a phone for a non-subscriber) and because Knox prevents resetting the warranty status if a non-standard ROM's been flashed. Speaking of which, you'd probably only be able to flash Rogers' ROMs via Odin unless their N3 was a "pure" i9505 capable of using international ROMs.
And as someone above mentioned there's some question as to what "unlocked" means with the N3 as there are now regional limitations on top of carrier's locking phones to their networks.
If I find a true international N3 that works on AT&T's LTE that's not regionally SIM locked I'll let you know. Until then I'm sticking with AT&T's version and hoping they haven't molested it too badly.
Thread cleaned.
Lets knock off the keyboard hero stuff and get back on topic.
The N9005 doesn't work on AT&T LTE, it is missing bands 700/1700
designgears said:
The N9005 doesn't work on AT&T LTE, it is missing bands 700/1700
Click to expand...
Click to collapse
Will the N9005 work on the Rogers network in Canada? I have no idea what these bands and frequencies mean, I just know that I need LTE to work.
choch69 said:
Will the N9005 work on the Rogers network in Canada? I have no idea what these bands and frequencies mean, I just know that I need LTE to work.
Click to expand...
Click to collapse
You can't just say "N9005" and expect to get an answer. "N9005" refers to generic Snapdragon 800 LTE capable version of GN3, but each country and carrier in the world has different LTE bands enabled in that Snapdragon's SoC radio. Find your Rogers here: http://en.wikipedia.org/wiki/List_of_LTE_networks
It operates on bands 4 and 7 - none of the Euro countries' carriers work on band 4, as you can see from the list. AT&T USA, T-Mobile USA and Rogers CA should be LTE cross compatible in most coverage areas, but not all.
If you buy N9005 version with unlocked bootloader - later, when someone makes Odin compatible with GN3 you will be able to flash Roger's LTE modem firmware to your N9005, no matter which country it is from and what LTE bands it currently has enabled
]
Okay well I was looking to buy an unlocked N9005 from the UK. Since none of the euro countries work on band 4, what about band 7? Do both bands need to be working in order to get LTE? The problem with buying this in my country is that there wont be a 64gb option available.
choch69 said:
]
Okay well I was looking to buy an unlocked N9005 from the UK. Since none of the euro countries work on band 4, what about band 7? Do both bands need to be working in order to get LTE? The problem with buying this in my country is that there wont be a 64gb option available.
Click to expand...
Click to collapse
Some carriers, which operate on dual band LTE use one band for upstream, and the other for downstream. If that is the case with Rogers you will have to have a phone with both bands enabled, to get LTE service from Rogers. However, even if that is not the case and both bands 4 and 7 are independent - Rogers has towers all over Canada, and in some regions those towers will operate on band 4, in other regions it will be band 7 and in some places towers will support both. By getting a phone that supports only band 7 you will greatly reduce your LTE coverage area. What percentage of Rogers' network uses what band - those details are publicly available, so you can either Google it or just call Rogers and ask. I would recommend against getting a phone, that supports only band 7, unless you plan on flashing Roger's modem to it later.
This not quite correct. A band, by definition includes both the up and downstream frequencies. Only one band is used at a time. Rogers happens to use band 4 and band 7. One is not reliant on the other. If you are in an area with band 7 coverage (most of Rogers LTE coverage has both) you will be able to use a N9005.
Apo11on said:
Some carriers, which operate on dual band LTE use one band for upstream, and the other for downstream. If that is the case with Rogers you will have to have a phone with both bands enabled, to get LTE service from Rogers. However, even if that is not the case and both bands 4 and 7 are independent - Rogers has towers all over Canada, and in some regions those towers will operate on band 4, in other regions it will be band 7 and in some places towers will support both. By getting a phone that supports only band 7 you will greatly reduce your LTE coverage area. What percentage of Rogers' network uses what band - those details are publicly available, so you can either Google it or just call Rogers and ask. I would recommend against getting a phone, that supports only band 7, unless you plan on flashing Roger's modem to it later.
Click to expand...
Click to collapse
omegacell said:
This not quite correct. A band, by definition includes both the up and downstream frequencies. Only one band is used at a time. Rogers happens to use band 4 and band 7. One is not reliant on the other. If you are in an area with band 7 coverage (most of Rogers LTE coverage has both) you will be able to use a N9005.
Click to expand...
Click to collapse
you're correct by claiming each band is self contained and and can carry both, upstream and downstream. However, each carrier owns only a small portion of the spectrum in the bands they operate on, and some carriers do practice using a single band for one way traffic only, in an effort to ease the network congestion and load balancing. I'm not saying it's Rogers - I have no information on that particular carrier, but some carriers do do that. I'm just saying for carriers, who use such practice, in order to get LTE service your phone's modem must have both bands enabled, otherwise it won't register with the network and you won't get LTE service at all.
Apo11on said:
you're correct by claiming each band is self contained and and can carry both, upstream and downstream. However, each carrier owns only a small portion of the spectrum in the bands they operate on, and some carriers do practice using a single band for one way traffic only, in an effort to ease the network congestion and load balancing. I'm not saying it's Rogers - I have no information on that particular carrier, but some carriers do do that. I'm just saying for carriers, who use such practice, in order to get LTE service your phone's modem must have both bands enabled, otherwise it won't register with the network and you won't get LTE service at all.
Click to expand...
Click to collapse
The OP needs to take into consideration that If he buys from an online retailer an international unit, this unit will need to be activated in its intended region before he can use it in the states.
Apo11on said:
you're correct by claiming each band is self contained and and can carry both, upstream and downstream. However, each carrier owns only a small portion of the spectrum in the bands they operate on, and some carriers do practice using a single band for one way traffic only, in an effort to ease the network congestion and load balancing. I'm not saying it's Rogers - I have no information on that particular carrier, but some carriers do do that. I'm just saying for carriers, who use such practice, in order to get LTE service your phone's modem must have both bands enabled, otherwise it won't register with the network and you won't get LTE service at all.
Click to expand...
Click to collapse
I've never heard of that. Seems like a problematic setup since the RF properties of bands can vary so much. Seems like you would get in a situation where you have up but not downstream or vice versa.
Yes, you would need a N9005 from Asia, not Europe as those are region locked.
omegacell said:
Yes, you would need a N9005 from Asia, not Europe as those are region locked.
Click to expand...
Click to collapse
Do you have a link for a source, where you got that information from? Or better yet - list of countries/markets, where GN3 will not be region locked?
Apo11on said:
Do you have a link for a source, where you got that information from? Or better yet - list of countries/markets, where GN3 will not be region locked?
Click to expand...
Click to collapse
Email me or hit me me up through my site. We're a retailer/wholesaler, not sure if I'm allowed to post about that since it would be "advertising".
omegacell said:
Email me or hit me me up through my site. We're a retailer/wholesaler, not sure if I'm allowed to post about that since it would be "advertising".
Click to expand...
Click to collapse
that is a valuable information, which a lot of people, watching this thread could use, not just me. I don't think it will be considered as advertising. People in this thread are looking to buy international GN3, which will work on AT&T in US. If the phone is region locked then it won't work. Therefore, listing the countries, where there is no region lock would be very much relevant to this topic.
Apo11on said:
that is a valuable information, which a lot of people, watching this thread could use, not just me. I don't think it will be considered as advertising. People in this thread are looking to buy international GN3, which will work on AT&T in US. If the phone is region locked then it won't work. Therefore, listing the countries, where there is no region lock would be very much relevant to this topic.[/QUOTEN
N9005 from HK or Singapore (perhaps others too) will work.
The South American N9000 are region locked to South American, North American, carribean etc. SIM cards (western hemisphere).
Click to expand...
Click to collapse

Questions about Nexus 6

As the title says, i need to know since i wont find anything anywhere.
Next month ill be buying the Nexus 6 comming from a note 3
Whats the difference in model number? Eg XT1100, XT1103
International and US version of the phone.
Is there any hardware specific modem changes that i should be aware of before buying it?
Does it matters to me? (Living in Sweden)
Are all custom roms compatible with both model numbers?
Thanks in advance.
International model (XT1100) is made for GSM, as networks in the developed world are all GSM.
N. America model (XT1103) is backwards-compatible with CDMA2000, and also supports some LTE bands unique to the US (Sprint & Verizon, mostly).
Unless noted otherwise by the dev, all the roms here are supported on both models.
synisterwolf said:
International model (XT1100) is made for GSM, as networks in the developed world are all GSM.
N. America model (XT1103) is backwards-compatible with CDMA2000, and also supports some LTE bands unique to the US (Sprint & Verizon, mostly).
Unless noted otherwise by the dev, all the roms here are supported on both models.
Click to expand...
Click to collapse
So in other words, i want the XT1100 version of the device since im not in the us and Sprint nor Verizon is available here in Sweden.
Thanks! Great info
mattish.91 said:
So in other words, i want the XT1100 version of the device since im not in the us and Sprint nor Verizon is available here in Sweden.
Thanks! Great info
Click to expand...
Click to collapse
The 1103 US version has a different radio chip wich supports different LTE bands then the 1100 World (including EU) version.
Custom ROMs work on both models. No hardware changes (SD805 and 3GB RAM on both).
Only the radio hardware is different.
The XT1103 supports CDMA from the stone-age, don't know why the americans (VZW/Sprint) haven't moved on yet.
The XT1100 supports the required LTE bands to be used in Sweden. Most likely the common EU Bands (Band 3/Band 7/Band 20).
The XT1103 supports 3 and 7, but not 20 which is the main LTE band in European countries.

Looking to buy OP 3T; couple questions

Hello,
I'm planning to buy this device, but it's the Chinese model. I have found a good deal at 419 USD for that specific model. I have two questions:
1. The hardware difference in Chinese and European variants is ONLY in the modems, right? Otherwise I can treat the device as if it were the European model (i.e. flash OxygenOS and all the custom ROMs here), right?
2. The device supports all of my provider's 3G bands. However, when it comes to LTE, my provider uses two bands: B3 and B20. The Chinese variant supports the band 3, but not the band 20. Is this going to be a problem in getting LTE coverage and LTE data speeds? Cause I don't want to get a phone that won't work on LTE.
Thanks in advance.
1) Yes, aside from the radio, all hardware is the same. You can flash any ROM made for the OP3T on any model as far as I'm aware.
2) Having only half the supported LTE bands will definitely reduce coverage and may reduce speed. If your carrier uses Carrier Aggregation, missing one of the bands will result in your network speed being bottlenecked by the single channel. Different bands also have different ranges/coverage area and service providers may not necessarily broadcast at every wavelength at every signal tower due to hardware limitations.
The B2 band is on a longer wavelength compared to B20, so theoretically it is slower but has a greater range.
Anova's Origin said:
1) Yes, aside from the radio, all hardware is the same. You can flash any ROM made for the OP3T on any model as far as I'm aware.
2) Having only half the supported LTE bands will definitely reduce coverage and may reduce speed. If your carrier uses Carrier Aggregation, missing one of the bands will result in your network speed being bottlenecked by the single channel. Different bands also have different ranges/coverage area and service providers may not necessarily broadcast at every wavelength at every signal tower due to hardware limitations.
The B2 band is on a longer wavelength compared to B20, so theoretically it is slower but has a greater range.
Click to expand...
Click to collapse
Thanks for the quick reply. So something like this won't work in my case?
I have personally never tried unlocking additional bands, though I'm going to assume there's quite a few risks associated with the process. If you want to try, consult this guide, which was made for the OnePlus 3 and is supposedly working for the 3T as well. Use at your own risk though.

India 3T - 4G/LTE not working in US

Hi,
I bought an one plus 3T in india and brought it to US. I'm getting only E not even 3G. When I enquired in T mobile/lyca store, i was told that india unlocked mobile won't support the US bands. Network upgraded. It was big surprise to me. Please suggest me how to unblock additional LTE bands in my 3T mobile.
That's not possible, you should trade your 3t A3003 for a 3t A3000 American band-unlocked model.
Check the specifications for each model under connectivity.
https://oneplus.net/us/3t/specs
Wait, what?
I live in Sri Lanka (Tiny country below India) and my 3T is the Indian device. I toured Europe for 2 weeks, and I used an O2 Sim, and used LTE in Europe for the whole time I was there. Have you tried going to Settings, and selecting "LTE/3G Only"? That may fix your issue.
I swear, there should be no issue with the bands.
thes3usa said:
Wait, what?
I live in Sri Lanka (Tiny country below India) and my 3T is the Indian device. I toured Europe for 2 weeks, and I used an O2 Sim, and used LTE in Europe for the whole time I was there. Have you tried going to Settings, and selecting "LTE/3G Only"? That may fix your issue.
I swear, there should be no issue with the bands.
Click to expand...
Click to collapse
India uses FDD 850, 1800 and TDD 2400. Most of the Europe uses TDD 1800. So you getting LTE in Europe is not a surprise.
USA uses 700, 1700, 1900, 2100, 2300
Varies with MSP
You will at least get 3G with T-Mobile and AT&T
Sent from my ONEPLUS A3003 using Tapatalk
thes3usa said:
Wait, what?
I live in Sri Lanka (Tiny country below India) and my 3T is the Indian device. I toured Europe for 2 weeks, and I used an O2 Sim, and used LTE in Europe for the whole time I was there. Have you tried going to Settings, and selecting "LTE/3G Only"? That may fix your issue.
I swear, there should be no issue with the bands.
Click to expand...
Click to collapse
Europe and india uses the same bands. I lived in uk and used the uk phones in india and indian phones over there. Its the states that uses different frequencies so most of phones don't work properly outside states.
smokin901 said:
India uses FDD 850, 1800 and TDD 2400. Most of the Europe uses TDD 1800. So you getting LTE in Europe is not a surprise.
USA uses 700, 1700, 1900, 2100, 2300
Varies with MSP
You will at least get 3G with T-Mobile and AT&T
Sent from my ONEPLUS A3003 using Tapatalk
Click to expand...
Click to collapse
bonham1988 said:
Europe and india uses the same bands. I lived in uk and used the uk phones in india and indian phones over there. Its the states that uses different frequencies so most of phones don't work properly outside states.
Click to expand...
Click to collapse
Ah, thanks for clearing that up for me. I had no clue that it uses the same bands.
thes3usa said:
Ah, thanks for clearing that up for me. I had no clue that it uses the same bands.
Click to expand...
Click to collapse
Compatibility of phones with the cell networks in the US are a total pain in the you-know-what. We have 4 different major carriers, all using different bands (a little bit of band sharing, but most completely different) for 3G and LTE (GSM is a little more standardized thankfully). Basically, as a general rule if a device not intended/designed to work on US (and depends on which exact US carrier), you are probably going to run into some incompatibilities (no 3G or no LTE, or limited connectivity).
redpoint73 said:
Compatibility of phones with the cell networks in the US are a total pain in the you-know-what. We have 4 different major carriers, all using different bands (a little bit of band sharing, but most completely different) for 3G and LTE (GSM is a little more standardized thankfully). Basically, as a general rule if a device not intended/designed to work on US (and depends on which exact US carrier), you are probably going to run into some incompatibilities (no 3G or no LTE, or limited connectivity).
Click to expand...
Click to collapse
Talk about synchronicity eh? But do the difference in bands give any speed differences, or call clarity? In the blind about these stuff, coming from a country that has only one carrier out of five who is still beta testing VoLTE.
thes3usa said:
But do the difference in bands give any speed differences, or call clarity?
Click to expand...
Click to collapse
Not an expert, and had to Google that. From what I'm reading, lower frequency (MHz) has better penetration (through buildings, etc.) while higher frequency bands have higher data capacity.
There are steps on how to unlock additional bands. There are like 50 steps. I dont remember where I've seen it but if you google how to unlock bands on OnePlus you will find it. Also try to flash Oxygen OS from US web site which I see no reason to work but just a suggestion lol
pk-air said:
Also try to flash Oxygen OS from US web site which I see no reason to work but just a suggestion lol
Click to expand...
Click to collapse
There are no region specific versions of OxygenOS, so this will do nothing but reflash the latest update.
pk-air said:
There are steps on how to unlock additional bands. There are like 50 steps. I dont remember where I've seen it but if you google how to unlock bands on OnePlus you will find it. Also try to flash Oxygen OS from US web site which I see no reason to work but just a suggestion lol
Click to expand...
Click to collapse
There are no steps at all. You cannot "unlock" bands, as they're hardware related. There's no way to switch bands out of the blue.
thes3usa said:
There are no steps at all. You cannot "unlock" bands, as they're hardware related. There's no way to switch bands out of the blue.
Click to expand...
Click to collapse
No you can't switch but you can unlock some bands which might help
https://forum.xda-developers.com/oneplus-3/how-to/guide-unlock-additional-lte-bands-t3519563
---------- Post added at 09:23 PM ---------- Previous post was at 09:16 PM ----------
pitrus- said:
There are no region specific versions of OxygenOS, so this will do nothing but reflash the latest update.
Click to expand...
Click to collapse
as I said I dont see any reason for it to work
thes3usa said:
There are no steps at all. You cannot "unlock" bands, as they're hardware related. There's no way to switch bands out of the blue.
Click to expand...
Click to collapse
At one time that was true. But for Qualcomm SoCs, the band support stopped being set in hardware (at least for the most part) some 3 years ago with Snapdragon 801 (or maybe earlier, but definitely with 801). Support for all or most bands (might be some exceptions) used worldwide is there, but the specific bands are enabled in firmware.
https://www.qualcomm.com/products/rf
That said, enabling bands is a long process as noted; and has the risk of resulting in a radio brick. So it's best to buy the correct region version OP3T (which supports the needed bands out of the box) when possible.
redpoint73 said:
At one time that was true. But for Qualcomm SoCs, the band support stopped being set in hardware (at least for the most part) some 3 years ago with Snapdragon 801 (or maybe earlier, but definitely with 801). Support for all or most bands (might be some exceptions) used worldwide is there, but the specific bands are enabled in firmware.
https://www.qualcomm.com/products/rf
That said, enabling bands is a long process as noted; and has the risk of resulting in a radio brick. So it's best to buy the correct region version OP3T (which supports the needed bands out of the box) when possible.
Click to expand...
Click to collapse
Why aren't all bands just enabled by default then? I don't understand why there are different models for different regions.
I have a US OP3T and I'm visiting India. It''s working with Jio in India (although it supports only only of the 3 bands used by Jio) but VoLTE doesn't work for some reason.

does lg v40 sprint and att have the same hareware?

https://www.lg.com/us/cell-phones/lg-LM-V405UA-sprint-v40
https://www.lg.com/us/cell-phones/lg-LMV405UA-att-v40
both have an identical model number: LM-V405UA, but frequency spec is different, sprint version support
b71 but no b66 (i know b66 is a superset of b4), att version supports b66 but no b71.
if we cross flash the usa unlocked pie firmware on both of them, are they practically the same in terms of frequency support?
phoneissue said:
https://www.lg.com/us/cell-phones/lg-cc-sprint-v40
https://www.lg.com/us/cell-phones/lg-LMV405UA-att-v40
both have an identical model number: LM-V405UA, but frequency spec is different, sprint version support
b71 but no b66 (i know b66 is a superset of b4), att version supports b66 but no b71.
if we cross flash the usa unlocked pie firmware on both of them, are they practically the same in terms of frequency support?
Click to expand...
Click to collapse
Yes, i cross flashed the v405qa firmware to the sprint sim unlocked v405ua variant and it eanbled band 30 and 66. Neither of which is supported by the sprint variant.
Several posts asking the same question in different forms...
The hardware is the same. The firmwares are not. Each get fw customized by the respective carriers to suit their network and add on their own stuff. Applies to most other models as well. Same hw just some things are not enabled in fw. Crossflashing enables and disables stuff depending on with fw is being used. VoLTE & VoWIFI are the most common things that get switched on and off other than bands.
This is however.. With exception the Tmo variants. These are always different from everything else for some reason.
how about comparing V405UA with V405QA7? Other than being carrier unlocked, do they have the same
hardware too considering V405UA can cross flashed into V405QA7?
neocyke said:
Several posts asking the same question in different forms...
The hardware is the same. The firmwares are not. Each get fw customized by the respective carriers to suit their network and add on their own stuff. Applies to most other models as well. Same hw just some things are not enabled in fw. Crossflashing enables and disables stuff depending on with fw is being used. VoLTE & VoWIFI are the most common things that get switched on and off other than bands.
This is however.. With exception the Tmo variants. These are always different from everything else for some reason.
Click to expand...
Click to collapse
phoneissue said:
how about comparing V405UA with V405QA7? Other than being carrier unlocked, do they have the same
hardware too considering V405UA can cross flashed into V405QA7?
Click to expand...
Click to collapse
Try reading the replies to your questions next time.

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