Why convert from T-Mobile to International firmware? - OnePlus 7T Questions & Answers

Just ordered a HD1907 today. I'm gathering info for modding when it arrives, but see a lot of discussions about converting from T-Mobile to International firmware. Why is this desirable? I'm an AT&T customer, so I'd be worried that the device would lose compatibility with their network if I did this.

Feenix0 said:
Just ordered a HD1907 today. I'm gathering info for modding when it arrives, but see a lot of discussions about converting from T-Mobile to International firmware. Why is this desirable? I'm an AT&T customer, so I'd be worried that the device would lose compatibility with their network if I did this.
Click to expand...
Click to collapse
It'll work great with at&t as Global variant. You'll need to convert to use custom roms

HueyT said:
It'll work great with at&t as Global variant. You'll need to convert to use custom roms
Click to expand...
Click to collapse
Ok, I'll give it a shot when it arrives (next Wednesday?).

Here's my quick experience
No carrier bloat. (Splashscreen and bundled apps)
Dual sim activated (Provided you have a supported sim tray)
Timed and easier updates directly from OnePlus (surpassing the carrier)
Better signal strength (Using an HD1907)
Extensive custom rom support (If you're into the modding scene)

I did the conversion, and the phone won't work on AT&T. It did work with the stock T-Mobile firmware, oddly. Any ideas what went wrong?

Feenix0 said:
I did the conversion, and the phone won't work on AT&T. It did work with the stock T-Mobile firmware, oddly. Any ideas what went wrong?
Click to expand...
Click to collapse
Solution here: https://www.getdroidtips.com/how-to-enable-volte-and-vowifi-on-oneplus-7-pro/

Related

Unlocked T999 Rom/Carrier Question

I have an unlocked T-Mobile S3 and I am ready activate it on Straight Talk which I believe uses ATTs network. My question is concerning custom roms; can anyone confirm that using roms specifically for the T-Mobile version will or will not cause issues if i use a different carrier?
Thanks
Infamous_Cheez said:
I have an unlocked T-Mobile S3 and I am ready activate it on Straight Talk which I believe uses ATTs network. My question is concerning custom roms; can anyone confirm that using roms specifically for the T-Mobile version will or will not cause issues if i use a different carrier?
Thanks
Click to expand...
Click to collapse
No it will not.
Don_Perrignon said:
No it will not.
Click to expand...
Click to collapse
I was a bit confused because there are several threads/devs trying to make sure users know to flash the right rom for their phone version. I also know that the ATT & T-Mobile versions are identical, besides the ATT version supporting ATT's LTE frequency and TM's supporting their HSPA+ frequency, and since I bought this phone off contract w/o warranty I want to make sure don't end up with a $600 paperweight.
Thanks for your confirmation!
Wait... Just some that we're on the same page, I read that as if you took a T-Mo phone, with a custom ROM, unlocked it, and used the phone on another GSM carrier, would there be problems - the answer is no.
If you take a T-Mo phone and use another carrier's ROM that's not compatible with T-Mo's phone - yes you will have problems.

Unlocked vs Tmobile/Flashing Carrier

I'm curious as to what doesn't work when you purchase an unlocked version vs Tmobile branded? Im told you may have issues with wifi calling/rcs/video calling/and visual voice mail....
2. How easy would it be once you get the unlocked version to flash the carrier software to make everything work and then flash back to original if needed to be for resale or warranty
The reason im asking is that samsung is giving a bigger refund on the unlocked version...
antawnm26 said:
I'm curious as to what doesn't work when you purchase an unlocked version vs Tmobile branded? Im told you may have issues with wifi calling/rcs/video calling/and visual voice mail....
2. How easy would it be once you get the unlocked version to flash the carrier software to make everything work and then flash back to original if needed to be for resale or warranty
The reason im asking is that samsung is giving a bigger refund on the unlocked version...
Click to expand...
Click to collapse
If you live in the US I think the unlocked version is just a SIM unlock. I think it is still the snapdragon version. Which means it will not be bootloader unlocked. I think you have to get the exynos version from an online retailer.
antawnm26 said:
I'm curious as to what doesn't work when you purchase an unlocked version vs Tmobile branded? Im told you may have issues with wifi calling/rcs/video calling/and visual voice mail....
2. How easy would it be once you get the unlocked version to flash the carrier software to make everything work and then flash back to original if needed to be for resale or warranty
The reason im asking is that samsung is giving a bigger refund on the unlocked version...
Click to expand...
Click to collapse
Note 9 was able to do this and I did it. I don't see a reason why you shouldn't be able o do it in Note 10+ once carrier firmware become available to be downloaded.
I pre-ordered the unlocked version myself and I have AT&T so it should be as easy as waiting for the carrier firmwares to become available on SamMobile and flashing with Odin. My interest is now with DeX supported with microsoft if Odin is even neccessary to flash firmwares anymore?
from what i can see on sprint i think they are using the qualcomm chip, i could be wrong, its labeled as SDM 855 Octa-Core SDR8150 and when searching that in google qualcomm documentation on the 855 pops up
Very curious about this myself. I preordered the unlocked version because that gave me more value for my trade in. I'm curious if I get the unlocked version and flash TMobile carrier software. Will I then get tmobile updates ota?
It's been the same for years now, hardware wise phones are the same, you'll need princey odin to flash unlocked/carrier firmwares. I buy unlocked and flash the carrier unlocked firmware. No bloat but it has the carrier specific radio. I prefer the native caller Id, no bloat, and the RTT over the carrier bloat and video calling. Google duo is better anyway
black96ss said:
It's been the same for years now, hardware wise phones are the same, you'll need princey odin to flash unlocked/carrier firmwares. I buy unlocked and flash the carrier unlocked firmware. No bloat but it has the carrier specific radio. I prefer the native caller Id, no bloat, and the RTT over the carrier bloat and video calling. Google duo is better anyway
Click to expand...
Click to collapse
Are you TMO or ATT? I have accounts with both.
I know WiFi Calling, which is what I really need as far as carrier goes, is usually more difficult with ATT.
If you are TMO can you get WFC to work without flashing carrier?
How long do you usually have to wait for the carrier firmware to come out?
jcrompton said:
Are you TMO or ATT? I have accounts with both.
I know WiFi Calling, which is what I really need as far as carrier goes, is usually more difficult with ATT.
If you are TMO can you get WFC to work without flashing carrier?
How long do you usually have to wait for the carrier firmware to come out?
Click to expand...
Click to collapse
Wifi calling has no issues on unlocked firmware with tmo. At&t I'm not sure but if you flash the att csc and and cp files, I do believe that's all it takes. I believe you need to flash the at&T AP file.
My Note 9 is unlocked. Using on T-MOBILE with no issues with WiFi calling. I am not able to use the stock visual voicemail though which I would prefer. With T-MOBILE I'm forced to use their visual voicemail which really sucks. Does anyone else know if they're is a way to use the stock visual voicemail on T-Mobile?
MrAwesome75 said:
My Note 9 is unlocked. Using on T-MOBILE with no issues with WiFi calling. I am not able to use the stock visual voicemail though which I would prefer. With T-MOBILE I'm forced to use their visual voicemail which really sucks. Does anyone else know if they're is a way to use the stock visual voicemail on T-Mobile?
Click to expand...
Click to collapse
I saw posts that allow you to do that if you flash carrier firmware
I just use Google Voice and forward unanswered calls to there
jcrompton said:
I saw posts that allow you to do that if you flash carrier firmware
I just use Google Voice and forward unanswered calls to there
Click to expand...
Click to collapse
When I inserted my SIM it appeared to automatically install the T-Mo firmware, but that's the problem.; it forces me to use the T-Mo VM (which absolutely sucks) and not able to use the Samsung VM which is pretty nice. I had previously used the Note 9 on Verizon with my work SIM and I was able to use the stock VM. When I switched to T-Mo it forced me to use the T-Mo VM. I can't see a way to get back to the stock VM unless I'm missing something...
MrAwesome75 said:
When I inserted my SIM it appeared to automatically install the T-Mo firmware, but that's the problem.; it forces me to use the T-Mo VM (which absolutely sucks) and not able to use the Samsung VM which is pretty nice. I had previously used the Note 9 on Verizon with my work SIM and I was able to use the stock VM. When I switched to T-Mo it forced me to use the T-Mo VM. I can't see a way to get back to the stock VM unless I'm missing something...
Click to expand...
Click to collapse
I go into the phone app call or SIM settings and find the call forwarding settings:
Then I do they conditional forwarding to my Google Voice number (I then, after setting up Google Voice, turn on Do Not Disturb for Google Voice, so I don't get there phone ringing twice)
Then GV serves as my VM
freebee269 said:
If you live in the US I think the unlocked version is just a SIM unlock. I think it is still the snapdragon version. Which means it will not be bootloader unlocked. I think you have to get the exynos version from an online retailer.
Click to expand...
Click to collapse
^^ What he said. Do not make the mistakes I, and many others made in the past - do NOT buy a US version from T-Mo, or from Samsung USA website, unlocked or otherwise. All USA versions are snapdragon based, and will have permanently locked bootloader - no rom flashing of any kind, no custom recoveries or improved radios. What you need is SM-N975F/DS Exynos version (unless you use CDMA carrier like Verizon or Sprint). It will have the same bands supported as Snapdragon one, with the exception of band 71, which you dont really need. T-Mo's B12 serves the same function as B71 (extended range LTE), and T-Mo made the tech available only in limited number of cities anyway. In all likelihood, by the time they roll it out in your city - you're gonna be thinking about buying Note 12 or 13.
Don't worry about software features like voice calling or any other - with all the custom roms and development available for Exynos version you'll be able to find yourself a rom that has any features you like and then some.
Apo11on said:
^^ What he said. Do not make the mistakes I, and many others made in the past - do NOT buy a US version from T-Mo, or from Samsung USA website, unlocked or otherwise. All USA versions are snapdragon based, and will have permanently locked bootloader - no rom flashing of any kind, no custom recoveries or improved radios. What you need is SM-N975F/DS Exynos version (unless you use CDMA carrier like Verizon or Sprint). It will have the same bands supported as Snapdragon one, with the exception of band 71, which you dont really need. T-Mo's B12 serves the same function as B71 (extended range LTE), and T-Mo made the tech available only in limited number of cities anyway. In all likelihood, by the time they roll it out in your city - you're gonna be thinking about buying Note 12 or 13.
Don't worry about software features like voice calling or any other - with all the custom roms and development available for Exynos version you'll be able to find yourself a rom that has any features you like and then some.
Click to expand...
Click to collapse
This is great advice ..... IF ..... you are looking to root and/ or do custom ROMs. But having done every release S9+/Note9/S10+ with Exynos it's NOT always that easy to get the CSC stuff right and working (and the development is often done by people who could care less about NA CSC because they don't live there).
Root / Unlocked bootloader = the Exynos device, like you said.
So what appears to be the answer (for the thread, assuming no root) after looking at all the answers in this and a couple of other threads is that the Unlocked US Samsung device is the same (or can, in worst case scenario, by Odin flashing carrier firmware, be made to do) device functionally as the carrier devices --- calling features, etc.
For me, the difference was going to be $300 bigger discount.
Apo11on said:
^^ What he said. Do not make the mistakes I, and many others made in the past - do NOT buy a US version from T-Mo, or from Samsung USA website, unlocked or otherwise. All USA versions are snapdragon based, and will have permanently locked bootloader - no rom flashing of any kind, no custom recoveries or improved radios. What you need is SM-N975F/DS Exynos version (unless you use CDMA carrier like Verizon or Sprint). It will have the same bands supported as Snapdragon one, with the exception of band 71, which you dont really need. T-Mo's B12 serves the same function as B71 (extended range LTE), and T-Mo made the tech available only in limited number of cities anyway. In all likelihood, by the time they roll it out in your city - you're gonna be thinking about buying Note 12 or 13.
Don't worry about software features like voice calling or any other - with all the custom roms and development available for Exynos version you'll be able to find yourself a rom that has any features you like and then some.
Click to expand...
Click to collapse
That's only true if you want to unlock the bootloader and root. The OP was merely asking about flashing carrier firmware on the US Unlocked version, which does not require root or an unlocked bootloader.
jcrompton said:
This is great advice ..... IF ..... you are looking to root and/ or do custom ROMs. But having done every release S9+/Note9/S10+ with Exynos it's NOT always that easy to get the CSC stuff right and working (and the development is often done by people who could care less about NA CSC because they don't live there).
Root / Unlocked bootloader = the Exynos device, like you said.
So what appears to be the answer (for the thread, assuming no root) after looking at all the answers in this and a couple of other threads is that the Unlocked US Samsung device is the same (or can, in worst case scenario, by Odin flashing carrier firmware, be made to do) device functionally as the carrier devices --- calling features, etc.
For me, the difference was going to be $300 bigger discount.
Click to expand...
Click to collapse
the bigger trade in value was a deciding factor as well for me...Well we weill see how it goes on the 23rd
I want to be able to root and flash TWRP on my Note 10+, but when i did this on my Note 8 i bought the N950N which was the korean exynos version and CRC support for t-mobile sucked ass, i want to make sure
A) what model do i buy for
- Rooting and stuff
- and best t-mobile network compatibility without going through all the dumb stuff
antawnm26 said:
the bigger trade in value was a deciding factor as well for me...Well we weill see how it goes on the 23rd
Click to expand...
Click to collapse
Same here. When Samsung stopped hobbling the OS, and added more features I didn't need root anymore. The extra $300 was my deciding factor. I have the unlocked Note 9. The only thing I have noticed aside from slower updates is that the camera sound can't be turned off independent of the global phone sound. Everything else works fine and I haven't noticed anything useful missing.
Mr. Orange 645 said:
That's only true if you want to unlock the bootloader and root. The OP was merely asking about flashing carrier firmware on the US Unlocked version, which does not require root or an unlocked bootloader.
Click to expand...
Click to collapse
I was actually giving advice to all folk, considering purchasing, not just the OP....Also, just curious - how do you Samsung's locked bootloader on the unlocked Note (I hope you know 'unlocked' means SIM unlocked only) will accept firmware, signed by T-Mobile? It's not a given Samsung original bootloader, untainted by carrier branded modifications, accepts carrier signed ROMs. You may need to be using T-Mobile version of the bootloader, for it to accept T-Mobile signed images.

Is there a difference between models?

Going back to when I purchased my early OnePlus devices, I imported them from China. This year, with the 7T was no exception. I found it for $435.00. A considerable savings over the $599.00 OnePlus is asking on its website. I haven't been able to see a difference in the US, China/India and EU models, is there one?
Just some differences in supported 4g bands.
Thanks
I got 7T purchased directly from oneplus, the VVM on stock dialer will not work on TMobile.
ysfk7 said:
I got 7T purchased directly from oneplus, the VVM on stock dialer will not work on TMobile.
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Click to collapse
mine works.
jim262 said:
mine works.
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Click to collapse
Tried to make it work for about a week.
I tried to reset, called tmo tech, It only works using the tmo vvm app, but not on the stock dialer. Tmo tech reset my vm, sent ota, etc. Modified the phone xml too.
As soon i got the Tmo 7T, VVM works rightaway using stock dialer.
ysfk7 said:
Tried to make it work for about a week.
I tried to reset, called tmo tech, It only works using the tmo vvm app, but not on the stock dialer. Tmo tech reset my vm, sent ota, etc. Modified the phone xml too.
As soon i got the Tmo 7T, VVM works rightaway using stock dialer.
Click to expand...
Click to collapse
Odd, considering mine is the HD1900 from China.
jim262 said:
Odd, considering mine is the HD1900 from China.
Click to expand...
Click to collapse
Interesting ?
anzial said:
Just some differences in supported 4g bands.
Click to expand...
Click to collapse
I was wondering, if you flash the international version of oos, do the other bands become accessible or usable? That's based on possibly reading that all 7t versions were the same hardware/radios but limited to certain bands due to their firmware. Can't recall where I may have read it though...thoughts?
destrorox said:
I was wondering, if you flash the international version of oos, do the other bands become accessible or usable? That's based on possibly reading that all 7t versions were the same hardware/radios but limited to certain bands due to their firmware. Can't recall where I may have read it though...thoughts?
Click to expand...
Click to collapse
I don't think so. Doesn't hurt to try though lol but I don't think firmware flash will unlock bands.

Which G7 ThinQ Variant Should I Buy?

I *will* root it (lots of experience with other manufacturers devices), and flash whatever (firmware, etc.) in order to get it to work on an MVNO (currently using USMobile for old phone).
* Would like it to work on a Verizon-capable MVNO.
* T-Mobile is a distant second choice, but still acceptable in my location.
I see that these are available, but with flashing I know that many limitations can be avoided (of course the hardware/radio/frequency bands dictate).
A nice comparison (brief below) from gsmarena.com with the EM, ULM, and VLM variants selected https://www.gsmarena.com/compare.ph...ne2=9115&idPhone3=9115#g710em,g710ulm,g710vmp
G710EM - Global market
G710EMW - China, Australia, New Zealand, Hong Kong
G710EAW - Europe, Australia, Hong Kong, Singapore
G710ULM - USA, unlocked model
G710VMP - Verizon
G710PM - Sprint
G710AWM - Canada
The ULM and the VMP variants show no differences in frequency bands, and the EM one shows more frequency bands.
I've spent a *lot* of time trying to figure this out (hours and hours, maybe I'm too thick? or can't see the forest for the trees), but am still confused.
Any help is much appreciated.
TiTiB said:
I *will* root it (lots of experience with other manufacturers devices), and flash whatever (firmware, etc.) in order to get it to work on an MVNO (currently using USMobile for old phone).
* Would like it to work on a Verizon-capable MVNO.
* T-Mobile is a distant second choice, but still acceptable in my location.
I see that these are available, but with flashing I know that many limitations can be avoided (of course the hardware/radio/frequency bands dictate).
A nice comparison (brief below) from gsmarena.com with the EM, ULM, and VLM variants selected https://www.gsmarena.com/compare.ph...ne2=9115&idPhone3=9115#g710em,g710ulm,g710vmp
G710EM - Global market
G710EMW - China, Australia, New Zealand, Hong Kong
G710EAW - Europe, Australia, Hong Kong, Singapore
G710ULM - USA, unlocked model
G710VMP - Verizon
G710PM - Sprint
G710AWM - Canada
The ULM and the VMP variants show no differences in frequency bands, and the EM one shows more frequency bands.
I've spent a *lot* of time trying to figure this out (hours and hours, maybe I'm too thick? or can't see the forest for the trees), but am still confused.
Any help is much appreciated.
Click to expand...
Click to collapse
If you want to root your phone, then you should steer clear of the T-Mobile variant. Till this day they still haven't unlocked the phones bootloader. You can buy any variant you want, just not the T-Mobile version.
billclintonwong said:
If you want to root your phone, then you should steer clear of the T-Mobile variant. Till this day they still haven't unlocked the phones bootloader. You can buy any variant you want, just not the T-Mobile version.
Click to expand...
Click to collapse
Great info, thanks! For clarity, do you mean the ULM model? iirc it's the one with the T-Mobile bands; not sure of the ones for the Asian markets, but I'm pretty sure they don't have compatible radios for the U.S.
I'm actually going with the Samsung A70; mostly for screen size, partly because of my familiarity with Samsung devices—both good and bad. Unfortunately, it seems I'm passing on a great phone in the G7 ThinQ, but will be back if the A70 thing doesn't work out.
Thanks again
billclintonwong said:
If you want to root your phone, then you should steer clear of the T-Mobile variant. Till this day they still haven't unlocked the phones bootloader. You can buy any variant you want, just not the T-Mobile version.
Click to expand...
Click to collapse
How do you unlock the Canadian one? I see no info on that one anywhere. All guides refer to the European one.
Noboty said:
How do you unlock the Canadian one? I see no info on that one anywhere. All guides refer to the European one.
Click to expand...
Click to collapse
You can't, LG only allows limited number of specific models to be bootloader unlocked, see list here:
https://developer.lge.com/resource/mobile/RetrieveBootloader.dev?categoryId=CTULRS0703
Hi,
im on the same boat as to which version to buy and whats suitable for the UK carriers.
What is the difference between the ULM/TM versions as it seems these are the only ones on fleabay that i have an option to buy! Do we stay away from the both versions or can we buy the ULM?
cheers
LG G7 ThinQ G710ULM or LG G7 ThinQ Verizon G710VMP or LG G7 ThinQ G710PM...the latter being the cheapest out of the 3 options.
Which one is best to buy for Virgin UK carrier?
Also, which phone would you choose between the LG G7 and the LG v30+???
Cheers
Anyone?
no one?
do i need to create my own thread?
Nenhuma.
billclintonwong said:
If you want to root your phone, then you should steer clear of the T-Mobile variant. Till this day they still haven't unlocked the phones bootloader. You can buy any variant you want, just not the T-Mobile version.
Click to expand...
Click to collapse
That stinks, I'm on T-mobile and want VoLTE and VoWifi as options, and as I understand it these will only work on LGs with carrier branded firmware that supports it. I've heard some variants can be flashed to others. Can, say, a VZ or AT&T variant be flashed with T-mobile's firmware and work properly?
Dishe said:
That stinks, I'm on T-mobile and want VoLTE and VoWifi as options, and as I understand it these will only work on LGs with carrier branded firmware that supports it. I've heard some variants can be flashed to others. Can, say, a VZ or AT&T variant be flashed with T-mobile's firmware and work properly?
Click to expand...
Click to collapse
No not with t mobile firmware you would never want to do that. There is almost 100% some way to do it with root
antintin said:
No not with t mobile firmware you would never want to do that. There is almost 100% some way to do it with root
Click to expand...
Click to collapse
What do you mean? Make volte and vowifi work with a different carrier firmware using root? I'm under the impression that's not possible, or at least it hasn't been with other phones.

Recommended Rootable Verizon Phones?

Hello, I have been with Verizon the last few years and I'm in the market for a new phone. I see on SlickDeals that there is a deal for the Verizon Samsung S10/S10+, but after reading through some of the posts, it seems you can't root the Verizon S10/S10+.
Since I don't need the latest and greatest phone from Verizon, are there any 'older', new in-store models that can be rooted so that I can install a custom ROM, etc?
Thanks in advance!
Your best bet is to get another phone that's not Verizon branded and just activate it on Verizon. You'd be going back a few years to get a Verizon phone that's rootable.
Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?
gil_happy said:
Thank you for this information... a couple of things getting another phone that is not Verizon branded:
- Previously, one would need to make sure they get a 'CDMA' (vs GSM) phone, but is there any technology, etc I need to look for when trying to find a non-Verizon phone?
- I assume if I get a 'non' branded Verizon phone, that some of the Verizon specific features may not work, e.g. WiFi calling, etc?
Click to expand...
Click to collapse
I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features
Cyclone Emperor said:
I can only answer the 2nd part of your question. Once you activate it on a Vzw sim you can flash Vzw firmware and get all the same features
Click to expand...
Click to collapse
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.
gil_happy said:
Thanks for this... that makes sense. The only other things is regarding the Verizon frequency bands - I'm guessing some phones may not have or support all of the Verizon frequency bands.
Click to expand...
Click to collapse
I have the international unlocked model of the s10+ U1 version on Verizon and yes maybe one or two LTE bands aren't supported but i get 82Mbps down and 12Mbps up depending on location

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