yashsingh1/xdaforums huggingface dataset:
[OnePlus 7 Pro Questions & Answers] suzook:
Wifi calling ESPECIALLY on Tmo is important. Thats a big reason to get a Tmo version.
[OnePlus 7 Pro Questions & Answers] JoeQuality:
Why is WiFi calling that important? Do you have poor network coverage where you are?
[OnePlus 7 Pro Questions & Answers] jcsww:
Some people work in places where cell phone service isn't possible, like a nuclear bunker. Texting and calls in-flight also are a nice bonus of WiFi Calling. The radio firmware for the T-Mobile firmware is CAT18, where the international firmware radio firmware drops that down to CAT16. Carrier aggregation for those on T-Mobile makes a difference in how their device performs on the T-Mobile network. As much as I don't use T-Mobile's Video Calling, some do.

These devices aren't perfect either! If something goes wrong, you can get a quick replacement from T-Mobile in comparison to OnePlus. There is no wait when buying the device from T-Mobile and you have their remorse period to return it as well. When I bought mine, I wanted it right away, not two weeks later. I have friends that wouldn't be able to afford a device if it wasn't for EIP's.

Ultimately, what works better for you might not be the same for someone else. The hardware is the same, so it is only the firmware that makes the difference outside of the crappy additional X50 modem in the 5G version sold by EE.
[OnePlus 7 Pro Questions & Answers] suzook:
As soon as your indoors in my...yes.
[OnePlus 7 Pro Questions & Answers] akxak:
I partly agree, though my present OP 6 directly from Oneplus has VoLTE and VoWiFi with T-Mobile US.

And you install the firmware of the int version so it seems obviously to support Voice over Data.
[OnePlus 7 Pro Questions & Answers] suzook:
No wifi calling on international fw 7pro.
[OnePlus 7 Pro Questions & Answers] akxak:
I'll try but a I am moving back to Europe in 2 months anyway, it doesn't matter... I'll see whether T-Mobile Germany meanwhile supports them (for the 6, they don't without twists).
[OnePlus 7 Pro Questions & Answers] suzook:
Ouch...so no carrier aggregation on international fw? If true, I'll be staying on TMO fw.
[OnePlus 7 Pro Questions & Answers] TriBeard:
I'm pretty sure I get WiFi calling on the international fw with tmo. At least it says I do on the lock screen and the notification/quick settings panel.
[OnePlus 7 Pro Questions & Answers] jcsww:
That's correct!

WiFi Calling does work on the international firmware, but it isn't as solid as the T-Mobile firmware implementation. Hand offs from cellular to WiFi and WiFi to cellular are not smooth and usually result in dropped calls. That isn't an issue on the T-Mobile firmware.
[OnePlus 7 Pro Questions & Answers] suzook:
That's odd, I get carrier aggregation on my uncertified mi mix 3.
[OnePlus 7 Pro Questions & Answers] jcsww:
I have one of those as well. The Chinese Jade Green 8GB/128GB that is running the latest Global ROM. The Mi MIX 3 is a rare exception, even though the updates are coming incredibly slow. I actually bought the OnePlus 7 Pro because I missed WiFi Calling. :P The cameras on the Mi MIX 3 take way better pictures though and I love the slider and slider sounds!
[OnePlus 7 Pro Questions & Answers] suzook:
Have you checked the 7pro international doesn't get carrier aggregation? That seems very odd. If it doesn't, I will be selling it immediately. I purchased the 7pro for 600mhz support. TMO still blows indoors.
[OnePlus 7 Pro Questions & Answers] jcsww:
I have had both installed on my GM1915. The CAT16 limit of the international firmware as well as speed tests in the same places, same bands, and same SIM. The speeds were consistently better on the GM1915 firmware for me and I had no issues with the WiFi Calling to cellular hand-off or vice versa. I also get consistently one bar of better usable service with the T-Mobile firmware. My Mi MIX 3, Note 9, S9 Plus, and OnePlus 7 Pro get no service in my bathroom. However, with the stock T-Mobile firmware, I get usable LTE in my bathroom, even though it is usually only one bar of service. It is good enough to watch a YouTube video without buffering though.
[OnePlus 7 Pro Questions & Answers] suzook:
Again, very strange. Almost as if the international fw isn't activating band 71.
[OnePlus 7 Pro Questions & Answers] jcsww:
Possibly. Maybe an update will bring things closer to parody between the two. WiFi Calling for the international firmware can definitely be improved. Hopefully network performance will get a tweak or few as well in the next update or two. This is kind of why I have been hoping for a custom T-Mobile GM1915 ROM to come out with dual-SIM enabled. Having the best of both in a single ROM would be awesome.
[OnePlus 7 Pro Questions & Answers] suzook:
Getting off topic, but does twrp backup modem????;if so, maybe a modem backup on TMO, then restore it on international fw.
[OnePlus 7 Pro Questions & Answers] jcsww:
TWRP backups aren't reliable enough for me to try. If you give it a try though, please share your results with the rest of us.
[OnePlus 7 Pro Questions & Answers] Guero.:
What's the category 16 thing? What is the stock T-Mobile firmware rated at?
[OnePlus 7 Pro Questions & Answers] jcsww:
CAT16 or X16 is how the LTE modem connects to achieve it's speeds. The international firmware (GM1917) is limited to CAT16 or X16, which tops it out at 1Gbps where the T-Mobile firmware (GM1915) allows for CAT18 or X18 to achieve a maximum 1.2Gbps. I am not sure of the easiest way to describe it so perhaps someone else could better, but the international firmware is limiting the modem to essentially what the SnapDragon 835's modem was capable of.
[OnePlus 7 Pro Questions & Answers] Guero.:
The international phone has an 835 instead of the 855? I think I'd prefer to be on the T-mobile version after hearing that I might not be getting my full coverage, but I need root as a higher priority.. Does the root method work on the T-mobile rom?
[OnePlus 7 Pro Questions & Answers] jcsww:
No, but the firmware is limiting the modem of the OP7P's SD855 to what the modem of the SD835 can do. All OnePlus 7 Pro's are essentially the same hardware with the exception of the 5G version (GM1920).
[OnePlus 7 Pro Questions & Answers] Guero.:
Why would they limit it artificially? So you can't root the T-Mobile rom? If not it sounds like we need a hybrid/universal rom with the advantages from both. Would the international phone benefit from the higher category?
[OnePlus 7 Pro Questions & Answers] jcsww:
Yes. The T-Mobile ROM can be rooted. A hybrid ROM is what I have been hoping for but I haven't seen any as of yet. Why they artificially limit the international modem, I am not sure. If I had to guess, it probably has something to do with their exclusive deal with T-Mobile. T-Mobile's network can also take better advantage of some of the features of CAT18 where potentially other networks might not. No LTE network is going to give any of use anything close to 1Gbps down, let alone 1.2Gbps, but it does make a difference with the speed I get over cellular. Obviously, that difference can vary depending on what the network has deployed where you use your device. There is a lot of band 2 and band 12 around me. I only see a noticeable difference on band 12.
[OnePlus 7 Pro Questions & Answers] Guero.:
Is there an easy way to check what band you're currently using and a map online of T-Mobile coverage by band? To root 9.5.8 T-Mobile do I just MSM back to T-Mobile, update to 9.5.8 then follow this process or do I need to do something special? Can I use an aftermarket kernel and retain category 18?

https://xdaforums.com/oneplus-7-pro/how-to/guide-bootloader-unlock-twrp-install-t3940368
[OnePlus 7 Pro Questions & Answers] jcsww:
I haven't used any after market kernels with any of the firmware for the OnePlus 7 Pro. You might want to ask the kernel dev if their kernel supports the GM9195 firmware. I use Cell Mapper to see the towers around me. There is no single place I have found online to find out what is deployed where. T-Mobile's coverage map though does allow you to filter coverage by 700MHz and 600MHz. I have been in areas with band 71, like Blacksburg, VA and Alpharetta, GA, but I am not in either regularly or any time in the near future.

You should be able to just flash back using the MSM Tool to the stock T-Mobile firmware. This is one area where someone else might be able to narrow down where those aspects differ. It is in relation to the modem firmware but there might be aspects of the kernel and main ROM as well that might also tie into what the radio can make use of.
[OnePlus 7 Pro Questions & Answers] Guero.:
So I can root the stock firmware with the method I linked? I saw something about an unlock token? I guess I could experiment with different kernels if I'm near somewhere with the newer bands.
[OnePlus 7 Pro Questions & Answers] suzook:
I can guarantee it's in the modem. Does twrp backup modem??
[OnePlus 7 Pro Questions & Answers] Guero.:
It appears to. Possibly back up the t-mobile modem then restore it on international? Might be a stretch but you don't know unless you try... or know. I tried restoring a complete backup(everything checked under the back up and restore) of international when I had a weird issue losing root but it bricked the phone to the point I needed MSM to start over. I would think the rest of the rom would need to be changed as well in some parts to use the category 18 stuff. I would be fine with T-Mobile 9.5.8 rooted but it would be nice to be able to use the second sim slot as well. Maybe the reason they lock it at one sim has to do with accessing the other bands/cat 18 bits.
[OnePlus 7 Pro Questions & Answers] suzook:
Once I get my TMO 7pro today, and get it sim unlocked, I will be testing. Will update in the future. I bet it's just the modem.

Hopefully that guy on here can sim unlock me quickly.
[OnePlus 7 Pro Questions & Answers] jcsww:
You do need the token to unlock the bootloader on the T-Mobile firmware. I am not sure if you can flash a TWRP image of the T-Mobile firmware and maintain an unlocked bootloader. When I flash, I use the MSM Tools to completely flash back.
[OnePlus 7 Pro Questions & Answers] Guero.:
I'm gonna look at the maps later. I might flash back to T-Mobile if I can find a straight answer on using root with it. If I'm still on international when you start experimenting I wouldn't mind cruising down to Blacksburg, VA to test different stuff if that's the nearest place with the newer tech. Nothing that could brick my phone though, haha. I could even bring my laptop to test some tethering. They've definitely baked some kind of internal firewall/data usage categorization into the newer Android versions. On CM on my Galaxy Note 3 with the same APNs and no TTL changes it worked like any internet when tethering, on this phone I'm definitely not getting an open road. I am really digging OOS though and wouldn't mind sticking with it if I can get what I want from it. Really what I was holding out for was a folding phone that's Android when it's closed and can be either Android or Windows when it's open, but we're not there yet. :rolleyes:
[OnePlus 7 Pro Questions & Answers] suzook:
What exactly do I need? Getting a slightly used TMO 7pro today. 1 st I know, I need to sim unlock. Then just oem unlock....where do I get bl token unlock?
[OnePlus 7 Pro Questions & Answers] Guero.:
Is that something I can apply for even while I'm on the international rom?
[OnePlus 7 Pro Questions & Answers] jcsww:
You can apply for the token through the OnePlus site. There is a thread for SIM unlocking the T-Mobile devices. You could also use the time while waiting for the unlock to request the token for the bootloader.

I am not sure what they use to determine eligibility for the token.
[OnePlus 7 Pro Questions & Answers] Guero.:
I'll check it out. Hopefully I don't need to be on the T-Mobile rom. Has anyone made a guide for rooting with the bootloader and sim unlocked T-Mobile 9.5.8 rom? Sorry for all the questions, I have been searching but this forum isn't very organized yet. I almost feel like we need a subcategory for the T-Mobile variant.

---------- Post added at 10:58 AM ---------- Previous post was at 10:45 AM ----------

Just to clarify sim unlocking and bootloader unlocking on T-Mobile isn't the same thing right? I need a second unlock from OnePlus to be able to root? I am already sim unlocked.
[OnePlus 7 Pro Questions & Answers] Guero.:
Update: Okay I see that they are different entities now.. I tried running the "fastboot oem get_unlock_code" command with the phone in fastboot and it returned an error, probably because I'm already on an unlocked international bootloader. So to get the bootloader unlock code to send to OnePlus you need to be on the T-Mobile rom. Don't really feel like going through that whole process again at the moment, haha.
[OnePlus 7 Pro Questions & Answers] suzook:
Anyone get around the packed image does not exist when trying to open msm tool? WTF?

3 different computers....WTF!
[OnePlus 7 Pro Questions & Answers] Guero.:
Are you flashing to international? Were you able to make a back up of the T-Mobile Modem? Mine did that one time but closing it and opening it back up worked. Make sure your files are all in the same folder. Did you literally open your brand new phone and plug it in and start flashing it, haha.

---------- Post added at 12:36 PM ---------- Previous post was at 12:25 PM ----------

Would it be possible to run the international unlocked bootloader with the T-Mobile rom instead of doing a complete MSM flash back to T-mobile?

---------- Post added at 12:49 PM ---------- Previous post was at 12:36 PM ----------

I had issues with it getting stuck in the first 8 seconds or so and going from connected to N/A. I tried everything in this thread and using the drivers this guy provided was the only thing that worked. The second time I used MSM Windows kept deleting the MSM tool calling it a virus.
[OnePlus 7 Pro Questions & Answers] DTop:
Make sure you actually downloaded the .ops file. You need it as well as the MSMdownloadtool exe. If you are still getting it, make a new folder on the root of your C drive and move the two files there.
[OnePlus 7 Pro Questions & Answers] jcsww:
The token you get from OnePlus to unlock the bootloader for the T-Mobile firmware, is used to unlock it on the T-Mobile firmware.
[OnePlus 7 Pro Questions & Answers] akxak:
Having read that the converted T-Mobile to int OP7P phone reports the same IMEI for both Sim slots, did.anyone try to use it with two different sim cards connecting to the same network? Does that work?
[OnePlus 7 Pro Questions & Answers] jcsww:
I have tried it with my Telus Canada and T-Mobile USA SIM's on the T-Mobile network. Both work fine. I am currently up in Canada and roaming on to the Bell network for T-Mobile. Telus and Bell in Canada share the same network. I don't have any issues here either outside of the two main companies having major network outages here in Canada over the past couple of days. I have been up here for almost 2 weeks now and the only issues I have experienced are what I mentioned with the network outages, which aren't the fault of the device.
[OnePlus 7 Pro Questions & Answers] suzook:
@op. Sim lock available yet? Need a tester? Tmo being dicks, and the guy on other thread can't unlock mine. Let me know. Thanks
[OnePlus 7 Pro Questions & Answers] ckithika:
This works. Spent hours trying to figure this out
[OnePlus 7 Pro Questions & Answers] Strike99Fear:
Don't know if this was ask but is there anyway to get the wifi calling to work after doing this?
[OnePlus 7 Pro Questions & Answers] luckylui:
I have the T-Mobile phone version and it's working fine for me while on the international..
[OnePlus 7 Pro Questions & Answers] Strike99Fear:
I'm rooted and have magisk and twrp. Would that cause issues?
[OnePlus 7 Pro Questions & Answers] luckylui:
Rooting and having Magisk is fine since I'm on the same boat.. Maybe a module or kernel that you installed broke it? You on stock or custom Rom?
[OnePlus 7 Pro Questions & Answers] Strike99Fear:
Hmm that's weird. Wait let me ask this. I remember Verizon being this way. Do I need to put an emergency address? I'm on stock and use XXX & renovate.
[OnePlus 7 Pro Questions & Answers] Djdragon44:
Hey! Thank you so much for your efforts and getting this setup, however I'm running into a problem. Whenever I launch MSM, it says the Port is connected, however when I hit start it freezes on Param Preload. I've installed the L2 Drivers, same thing. Restarted PC, same thing. Uninstalled and Reinstalled L2 Drivers, same thing. Any advice or links to getting this figured out would be awesome. Thanks!

I am using the cable to phone came with, on a USB 2.0 Port on my PC.
[OnePlus 7 Pro Questions & Answers] sparky2029:
Okay I'm gonna give it a go, hopefully it works
[OnePlus 7 Pro Questions & Answers] Primal instinct:
Good luck man... Worked for me
[OnePlus 7 Pro Questions & Answers] sparky2029:
Worked like a charm, thank you very much for the help! Really appreciate it
[OnePlus 7 Pro Questions & Answers] Primal instinct:
No prob you should really be thanking the Dev
[OnePlus 7 Pro Questions & Answers] Ice Bear:
Ice Bear has tried to put the phone into EDL mode, but it just reboots a few seconds after. Is Ice Bear doing something wrong?
[OnePlus 7 Pro Questions & Answers] sparky2029:
Thank you for the amazing work!
[OnePlus 7 Pro Questions & Answers] Primal instinct:
Don't press the power button and just press the two volume buttons and insert the cable
[OnePlus 7 Pro Questions & Answers] sparky2029:
Most definitely did, I just wanted to also thank you for walking me through some of the steps
[OnePlus 7 Pro Questions & Answers] Primal instinct:
all hail the devs... :)
[OnePlus 7 Pro Questions & Answers] Ice Bear:
The power button wasn't pressed during the procedure. Ice Bear held the volume up and down buttons for 5 seconds and then inserted the cable. Even using the adb reboot edl fails. It will put the OnePlus 7 pro in edl mode but reboots a few seconds after.
[OnePlus 7 Pro Questions & Answers] Djdragon44:
Okay so I tried it on a different computer and it worked, however now when I go to Developer Settings "OEM Unlocking" is grayed out and I can't turn it on. Any ideas?
[OnePlus 7 Pro Questions & Answers] engMTW:
In order for OEM unlocking to show up, you had to SIM unlock your phone before converting it.
[OnePlus 7 Pro Questions & Answers] themustached:
This doesn't sim unlock you. On the 6t that part was easy. We're working on it(trying).
[OnePlus 7 Pro Questions & Answers] Djdragon44:
Ah - that would do it - I got excited and figured this would bypass that, but oh well! I'll work on getting it unlocked. In this state, once it is unlocked, would I need to re-do the process or would a reboot show it?

Thanks for the reply!
[OnePlus 7 Pro Questions & Answers] engMTW:
You would have concert back to T-Mobile, unlock, and convert back.

Or wait for the SIM unlock method for the international rom. Should be out today. It works now, it’s just dangerous and complicated. That’ll get fixed up today.
[OnePlus 7 Pro Questions & Answers] themustached:
yeah, once they do it, should just show up after reboot
[OnePlus 7 Pro Questions & Answers] &roid:
Worked perfectly for me following the instructions. Appreciate all who worked together to make this happen. Will send a donation to the brother that put this together for all of us.
[OnePlus 7 Pro Questions & Answers] luckylui:
Not positive with VZW since I haven't had them in like 10 yrs lol.. I was on Stock T-Mobile oos, sim unlocked it, unlocked bootloader then switched to the international version without issues. I don't have any modules installed and I'm on stock 9.5.9 w/ Elemental kernel. Don't have an emergency address added..
[OnePlus 7 Pro Questions & Answers] Strike99Fear:
Yeah cause when I try to call it'll show for a second and just hang up the call. It won't even ring. I'll try again alter and see if anything disabled it.
[OnePlus 7 Pro Questions & Answers] luckylui:
Try *#*#4636#*#* and check if it's enabled..
[OnePlus 7 Pro Questions & Answers] Strike99Fear:
Holy crap! So I asked tmobile Twitter support for help on this. And they advised me to update emergency address and it worked fine after that. It was just that simple step.
[OnePlus 7 Pro Questions & Answers] luckylui:
That is weird man! I don't even know where the hell that menu is ?

Well, glad it's up and running for ya now!!
[OnePlus 7 Pro Questions & Answers] the noan:
been ****ed for 3 hours. i read through the whole thread. i tried this and it did not work. i rebooted and tried to see if anything would happen on my linux partition and nothing. rebooted to windows and i didnt get the device not recognized bull****. i can only imagine that i needed the reboot after doing this step to get the drivers to take. thank you for this. i was literally looking at buying another phone on amazon when it started to work. thank you again
[OnePlus 7 Pro Questions & Answers] ztotherad:
double post edit
[OnePlus 7 Pro Questions & Answers] Mizlad:
I booted into EDL but I think it's just stuck. Holding the power button forever and no reset, though windows detects it being plugged in.
[OnePlus 7 Pro Questions & Answers] suzook:
I have an unlocked international op7. Could I flash the tmo fw on it? Also, reflashing, does it relock bl?
[OnePlus 7 Pro Questions & Answers] BobZhome:
I'm I correct in saying that: If we did not sim unlock before converting to international, then we can't root?

"OEM unlocking" is grayed out for me and when I go to: "[MAGISK]Root OnePlus 7 Pro With Patched Boot Image 9.5.3 | 9.5.4" it has: Prerequisites : Unlocked Bootloader
[OnePlus 7 Pro Questions & Answers] TriBeard:
If you are using your Telus sim as the primary and someone calls your tmo number (secondary) does the call come through? Or vis versa, doesn't really matter. I just want to know if they non primary/in use sim can get a call.
[OnePlus 7 Pro Questions & Answers] jcsww:
Yes. It's dual-standby. If a call comes in on either SIM, the other SIM will go directly to voicemail.
[OnePlus 7 Pro Questions & Answers] suzook:
BTW, I just tried tmo FW, and International. Both have proper Carrier aggregation. I get exact same download speed, and signal is the same too on both FW's. Not sure why you have this issue. I also get proper CA on HavocOS.
[OnePlus 7 Pro Questions & Answers] jcsww:
Perhaps the issues I am currently having with my OnePlus 7 Pro. Although OnePlus and T-Mobile have no clue what is up with it. It almost seems like mine is dying a slow death. I am going to send it in next week if the OnePlus team doesn't find anything helpful from the LogKit they asked for since they have already issued me an RMA.
[OnePlus 7 Pro Questions & Answers] NotATreoFan:
It will depend on your location. Only TMO firmware can roam on US Cellular, so for people in their coverage area, TMO firmware will work better.
[OnePlus 7 Pro Questions & Answers] suzook:
Explain to me why? I'm not sure your right. Not being a ****, just curious.
[OnePlus 7 Pro Questions & Answers] NotATreoFan:
Depending on where you are in the US, TMO has agreements to roam onto US Cellular. You might also be in an area where only B4 LTE is available instead of B12, B66, or B71. That could affect the speeds you see on TMO firmware.
[OnePlus 7 Pro Questions & Answers] kirschdog1:
Ok so I converted my TMobile to international but now I want to update firmware? Where can I find the correct firmware and what is the best way to update to 9.5.9?
[OnePlus 7 Pro Questions & Answers] jcsww:
If you aren't rooted, then you can manually check for updates and get the OTA.
[OnePlus 7 Pro Questions & Answers] kirschdog1:
What if I am rooted?
[OnePlus 7 Pro Questions & Answers] jcsww:
This thread covers it.
[OnePlus 7 Pro Questions & Answers] akxak:
Just a note for those unsure which version to order... I got my international version GM1917 and VoLTE/VoWiFi do work in the US T-Mobile network.
[OnePlus 7 Pro Questions & Answers] mjb337:
t-mobile oneplus 7 pro- download turbo vpn from android market connect to canada then check for updates then you will get the latest update thats it. this is what i do each time an update comes out.