5G compatibility ? - OnePlus 8T Questions & Answers

Anyone have luck getting actual 5G with AT&T? (None of their 5G E bull****)

I have the unlocked version (bought directly from OnePlus) running on AT&T and I called them to see what could be done. Not much! To try and figure out if this is an AT&T issue, or a OnePlus issue...well your guess is as good as mine! VoLTE is selectable and working. I am able to make a phone call and still have access to the internet. I am not sure who to point a finger at to get 5G working, but I might say it's up to OnePlus. My reasoning is this: I had the unlocked Galaxy S20 FE for a few weeks running with the same sim on AT&T and it appeared as if 5G was working. So it appears as if AT&T is not stopping unlocked phones from accessing their 5G network??? So if my theory is correct then it's up to OnePlus to make the 8T work on the AT&T 5G network. Of course I could be completely wrong here and I hope someone somewhere can figure all this crap out for us all! Just like everything else today...it's all a smelly-hot-pile!

Dumb question, but did you have a 5g SIM?
I stopped by an AT&T store tonight and picked up a new SIM card. Bastages charged me $5 for it. Haven't used the 8T yet though.

According to AT&T the sim I have is the latest one available. As I mentioned when I had the S20 FE for a few weeks the 5G icon was active 90% of the time on the notification bar. Once in a while it would drop to 4G LTE. So now I am using the exact same sim on the 8T and their is NO 5G anywhere to be found! So, I don't think AT&T is preventing unlocked phones from accessing their 5G network....but rather I believe OnePlus needs to "do something" to make it work!

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Ordered an unlocked 8T and am a T-Mobile customer.

I pre-ordered the unlocked 8t before I knew T-Mobile was releasing their own version. I'd like to know if there are any 5G performance features that the T-Mobile version has that the unlocked version doesn't. I searched around and one place said the only difference is software-related. Would I be better off returning the unlocked 8t and buying the T-Mobile version?
Just depends on what your needs are. The unlocked version will get 5G service just fine. T-mobile version claims to optimize the network, however I'm not 100%sure about that. If you're wanting easy bootloader unlock and flash custom roms the unlocked might be the better way to go, otherwise the t-mobile version is fine as this is the variant I have.
I'm sure my rambling didn't help you much.
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Only difference between the TMobile variant and unlocked is the IP68 certification.
dr_rick13 said:
Only difference between the TMobile variant and unlocked is the IP68 certification.
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And single sim tray, locked bootloader as well as no AOD
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bkeaver said:
And single sim tray, locked bootloader as well as no AOD
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Tmobile version bootloader can be unlocked after sim unlock (which can be achieved by contacting Tmobile support on Twitter, did it for 7Pro and 6T)
dr_rick13 said:
Tmobile version bootloader can be unlocked after sim unlock (which can be achieved by contacting Tmobile support on Twitter, did it for 7Pro and 6T)
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That's not what I said. Yes I know that it can be unlocked. The unlocked version comes unlockable
And not everyone has an easy time at obtaining an unlock code from T-mobile either. ..
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bkeaver said:
And single sim tray, locked bootloader as well as no AOD
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Those three things apply to the T-Moblie variant? And which one has the ip68 rating?
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Yes those 3 things applies to the T-mobile variant. Official IP68 is the T-mobile one as well
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@bbowman I have T-Mobile too and I've Supported OPO, OP3, OP3T, OP5, OP6T Global and now OP8T Global. I've always bought the Global Ed and have had no issues using them on the T-Mobile network. The only differences I saw between the T-Mobile version of the 6T and the Global was the T-Mobile ver got Network "Improvement" updates to "better" tune the software to work with T-Mobile Towers and it only had 1 SIM slot. With the 6T once it was unlocked it could be flashed with a Global Firmware.
Should be fine
Currently on the unlocked OnePlus 8 Pro on T-Mobile. I get all the 5G, including the standalone (after getting an R15 SIM card from the nearest T-Mobile store). You shouldn't have any issues with the unlocked 8T (mine will get delivered today) in terms of 5G, and you get the flexibility of dual-SIM. Win-win.
bbowman said:
I pre-ordered the unlocked 8t before I knew T-Mobile was releasing their own version. I'd like to know if there are any 5G performance features that the T-Mobile version has that the unlocked version doesn't. I searched around and one place said the only difference is software-related. Would I be better off returning the unlocked 8t and buying the T-Mobile version?
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Mootarjim said:
Currently on the unlocked OnePlus 8 Pro on T-Mobile. I get all the 5G, including the standalone (after getting an R15 SIM card from the nearest T-Mobile store). You shouldn't have any issues with the unlocked 8T (mine will get delivered today) in terms of 5G, and you get the flexibility of dual-SIM. Win-win.
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Mine arrived yesterday and I was surprised to see that I had 5G coverage (central Orange County, CA)! My SIM card is many years old, will I somehow get better 5G service if I swap in a newer card?
Yeah, I was getting 5G just fine. The newer SIM lets you access the standalone 5g network (when available), which I believe should give you even better downloads/uploads and lower latency. It doesn't share the frequency band with 4G, is the thing. As I understand it, anyway.
In my practical experience, I popped in the new SIM and got 400MBps standing outside the T-Mobile store. I hadn't seen that previously.
I'm sure it's fine without, but if you're near a store, it can only improve what sounds like is already a good experience for you.
bbowman said:
Mine arrived yesterday and I was surprised to see that I had 5G coverage (central Orange County, CA)! My SIM card is many years old, will I somehow get better 5G service if I swap in a newer card?
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Mootarjim said:
Yeah, I was getting 5G just fine. The newer SIM lets you access the standalone 5g network (when available), which I believe should give you even better downloads/uploads and lower latency. It doesn't share the frequency band with 4G, is the thing. As I understand it, anyway.
In my practical experience, I popped in the new SIM and got 400MBps standing outside the T-Mobile store. I hadn't seen that previously.
I'm sure it's fine without, but if you're near a store, it can only improve what sounds like is already a good experience for you.
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Thanks I didn't know that about the new sim version. I got international on t mobile. My 7t is international and I been with tmo for 14 years. I noticed with 7t and now 8t, visual voicemail NEVER works unless I have the tmo version. My 6t was tmo version, won't make that mistake again, but nonetheless, I was curious, does yours work? And my rcs is on and off bi weekly, always connecting, or trying.
dr_rick13 said:
Tmobile version bootloader can be unlocked after sim unlock (which can be achieved by contacting Tmobile support on Twitter, did it for 7Pro and 6T)
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Do you have to meet the Tmo unlock requirements or can twitter support bypass the restrictions?
craznazn said:
Do you have to meet the Tmo unlock requirements or can twitter support bypass the restrictions?
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It been said most people are able to get it bypassed via Tforce (twitter T-Mobile support) as long as ypur nice to them. Thats what im gonna do when i get mine tommorow and have the imei. It looks like the only requirement in order to request the bootloader unlock code is having it sim unlocked (with up to 2 day waiting for the unlock file for bootloader).
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FullOfHell said:
Thanks I didn't know that about the new sim version. I got international on t mobile. My 7t is international and I been with tmo for 14 years. I noticed with 7t and now 8t, visual voicemail NEVER works unless I have the tmo version. My 6t was tmo version, won't make that mistake again, but nonetheless, I was curious, does yours work? And my rcs is on and off bi weekly, always connecting, or trying.
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I did the same thing with the TMo 6T. In-app visual voicemail was the only advantage. I just use the T-Mobile visual voicemail app since then, and it's mostly fine. As for RCS, mine has been connected solid side I set the phone up. Maybe try clearing cache/storage on Messages/Google Play Services?
Mootarjim said:
I did the same thing with the TMo 6T. In-app visual voicemail was the only advantage. I just use the T-Mobile visual voicemail app since then, and it's mostly fine. As for RCS, mine has been connected solid side I set the phone up. Maybe try clearing cache/storage on Messages/Google Play Services?
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Yes I have just accepted no visual voicemail, oneplus customer service sucks and can't understand what I'm telling them. Confused at whether I'm saying I have a tmo variant or not. I have not had one, for 6t or 7t.
Rcs I have got working. Had to opt out on the online form, then turn it off for a while and disable carrier services.

5g on unlocked note 20 ultra?

Hi guys i got a Verizon note 20 ultra other day for $250 bucks. Its pretty much new but its locked so im going to pay to have unlocked? My ? Is will i be able to get 5g on this from att even though its a unlocked device? I know in the past when i unlocked Verizon phones they would work but would stay vzw and say sim not from Verizon. And would get like lte and 4g at the top on the notifications area. I had a s20 plus i got cheap cheap from sprint. I paid to unlock it and it didnt have any carrier bloatware on it. When i poped in a att sim i got LTE only and did get LTE+ but didnt say 5G. It did hower get like 68mbs on speed test and top out at like 120mbs. But my note 10 im useing now gets like 6mbs. Not sure what 5G speeds are like and if that sounds about right or not.

Will an unlocked Tmobile 8T+5G work on Verizon 4G?

Just picked up a Tmobile 8T+5G, haven't even taken it out of the box yet. I was planning on having it unlocked ASAP, and reflash with the global firmware to access the dual SIM ability.
I currently run a Pixel 3A, with my personal line on Sprint, and my employer's line on Verizon using a SIM card from the company iPhone XR. After unlocking/reflashing/adding dual SIM tray, will I be able to run the Verizon SIM in the phone for voice/SMS service only, while keeping my Sprint SIM in the other SIM slot? I don't care about 5G working on Verizon, as I know there's a different 8T to support Verizon's 5G anyways, and really don't even need data at all on it.
EDIT: Just found Verizon's BYOD IMEI checker, and it does says this 8T is compatible based on the Tmo IMEI number, but I've seen cases in the past where the check tool says yes, but people still are unable to get things to work correctly. Also, in my case, I'd still be using an old SIM that I can't easily change out for a new one.

Question op9 lost 5g

Hello all. Glad to be here and chat with all you knowledgeable people!! My situation is that I thought I did all my research. I got an UNLOCKED T-MOBILE OP9 to be used on my VERIZON 5G SIM and 5G SERVICES. The phone has worked flawlessly although its yet to deliver Android 12 update. Anyway I was getting 5G for like 2 weeks and its stopped. I live in NJ that's littered with 5G towers and I've done all instructions per Verizon, Oneplus and even T-Mobile advised me to do.
I've done my fair share of combing through this forum. Is this a case of....I'll have to unlock the bootloader to flash global firmware to allow the modem to talk to Verizon 5G? Or will ANdroid 12 update help me. I hope its not the prior bc I've seen those instructions and they seem a little complicated for me. If you think its something else, please let me know. It just seems weird to me that I got 5G for 2 weeks and no more. Ty for your help.
cirerome said:
Hello all. Glad to be here and chat with all you knowledgeable people!! My situation is that I thought I did all my research. I got an UNLOCKED T-MOBILE OP9 to be used on my VERIZON 5G SIM and 5G SERVICES. The phone has worked flawlessly although its yet to deliver Android 12 update. Anyway I was getting 5G for like 2 weeks and its stopped. I live in NJ that's littered with 5G towers and I've done all instructions per Verizon, Oneplus and even T-Mobile advised me to do.
I've done my fair share of combing through this forum. Is this a case of....I'll have to unlock the bootloader to flash global firmware to allow the modem to talk to Verizon 5G? Or will ANdroid 12 update help me. I hope its not the prior bc I've seen those instructions and they seem a little complicated for me. If you think its something else, please let me know. It just seems weird to me that I got 5G for 2 weeks and no more. Ty for your help.
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Same for me. On ATT. Just got the phone today it came with Android 11. Activated and 5g worked. Upgraded to Android 12 and now I only get 4g.
If you are on Android 12 try turning off smart 5g. It switches from 5g to 4g to save battery if your 5g connection is poor.

Question AT&T SIM in a Verizon S908U. CSC not changing.

I've been on Verizon for about 10 months now, but would like go switch to AT&T. I put an AT&T Prepaid SIM into the Verizon S22, and was expecting it to restart with the AT&T CSC firmware, but it stayed with the Verizon software. I even got a message saying that because it wasn't a Verizon SIM that some services would be unavailable.
What's going on? I thought all the US S22 Ultras were the same phone whether it's bought from AT&T or Verizon or any other carrier.
Are you using an esim with Verizon? If so try turning it off and letting att be the only one active and it should reboot. You will still keep all the Verizon apps and logo
Nope, I'm using a physical Verizon SIM. Isn't stuff like the boot animation and 5G icons supposed to change, since it's a different carrier?
sjvirchow said:
Nope, I'm using a physical Verizon SIM. Isn't stuff like the boot animation and 5G icons supposed to change, since it's a different carrier?
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Can happen if the firmware you're on doesn't support "BYOD" yet. This is true of earlier releases of phones on U firmware. U1 supports it out of the box, so you might want to consider flashing U1.
Right but this is a Verizon S22 Ultra. It isn't really early I would think. Aren't all the S22's in the US the exact same phone?
sjvirchow said:
Right but this is a Verizon S22 Ultra. It isn't really early I would think. Aren't all the S22's in the US the exact same phone?
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Same hardware but like I said U firmware is hit and miss.
I switched from Verizon to T-Mobile. After 2 weeks I was still running Big Red branding. One day I started having issues with cell service and data. I flashed the latest U1 software and have been problem free ever since.

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