Phone says no sim card? - OnePlus 6T Questions & Answers

I just had a very weird thing happen. I'm on T-Mobile, rooted, using 9.0.5 international room. I restarted my phone and I said I had no sim card and could only make emergency calls. I powered the phone off and started it back up. It's fine now but I just wanted to report that.
Sent from my ONEPLUS A6013 using Tapatalk

Having this happen to me right now after flashing omnirom.. also T-Mobile 6t but a reboot/reflash isn't fixing it. I only seem to get data on Oxygen

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Phone doesn't see the sim card.

I'm having a problem. My phone doesn't see the sim card.
Sent from my ADR6400L using Tapatalk 2
Holy horse balls. How about a little info?
Are you rooted? If so, what ROM are you running?
Sorry started on aokp tootie frootie and was fine until I flashed the WiFi talk fix. So my buddy did a factory reset and then put Revolution HD 7.04. Not sure if he wiped like he should have. He's been converted recently from Apple. Still has s-off and rooted. I'm going to try the aokp rom again and see what happens. We tried another sim card and it didn't see it. Im doing this for a friend at work and I hope I didn't f$%k it up on him. I have a thunderbolt and this phone is all new to me. Especially the way that rom flashed itself asking questions and such. Really jealous of this phone as well for having fully functional ICS. ;-) lucky bastards. Great devs on this phone.
Update: I totally wiped everything and reflashed Revolution HD. Tried fixing permissions, nothing. Still not seeing the sim. HELP
Sent from my ADR6400L using Tapatalk 2
Try placing a small piece of paper on top of the sim card then insert it into the sim slot to add pressure to it.
Are you able to try a different sim card? The card could be corrupted or damaged.
Sent from my HTC Glacier using xda premium
I did try another sim last night and still no go. PaperIt didn't work either. It all started about an hour after I flashed that wifi calling fix for aosp/aokp roms. Any ideas on on gfree sim unlock?
Sent from my ADR6400L using Tapatalk 2
Gfree can carrier unlock your phone. Did you root with gfree? If so, you very likely have unlocked it already.
You could try flashing PD15IMG.zip.
Worse comes to worst you can replace the sim/sd card reader for cheap from Ebay. (probably won't work if it is indeed a software problem)
Sent from my HTC Glacier using XDA
No I didn't use gfree to root. Now I'm trying to get back s-on this thing and its not working. Anyone know where I can get the OTA gingerbread update zip from. All I can find is a froyo zip. I tried the unroot/s-off methods in the Glacier bible. But no good. All I get is unroot but still s-off. Maybe he can get some help from t-mobile.
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I'm having the EXACT same issue,and my phone is SIM unlocked and it won't recognize any of the 3 active Sims cards I tried, 1. is mine, T mobile. 2nd is My Mother's At&t, and third my buddies boost mobile sims card from his android phone from there. None either say it's the wrong Sims card or anything just that I don't have a sims card. Oh yea and where your able to input an APN is all greyed out so I can't even try to type in an APN manually. I know the card is good. I use it on my Samsung Galaxy 2. The Mytouch 4G is my old phone. I kept it for a just in case phone. Phone is rooted and it was running CM 6.5, then I put a stock rom on it now to see if the rom was the problem.. must not be. I'm fresh out of Idea's. Anyone here got any?
knotrkr said:
I'm having the EXACT same issue,and my phone is SIM unlocked and it won't recognize any of the 3 active Sims cards I tried, 1. is mine, T mobile. 2nd is My Mother's At&t, and third my buddies boost mobile sims card from his android phone from there. None either say it's the wrong Sims card or anything just that I don't have a sims card. Oh yea and where your able to input an APN is all greyed out so I can't even try to type in an APN manually. I know the card is good. I use it on my Samsung Galaxy 2. The Mytouch 4G is my old phone. I kept it for a just in case phone. Phone is rooted and it was running CM 6.5, then I put a stock rom on it now to see if the rom was the problem.. must not be. I'm fresh out of Idea's. Anyone here got any?
Click to expand...
Click to collapse
Did you have to get a different SIM for the SGSII?
Sent from my Glacier using xda app-developers app
Yes I did. The one I had was 5 years old so they updated it.
knotrkr said:
Yes I did. The one I had was 5 years old so they updated it.
Click to expand...
Click to collapse
Then that's your problem, I would assume. The phone can't correctly read your SIM.
Sent from my Glacier using xda app-developers app
so that's fixable so the new sim will work on both phones if I call them?
---------- Post added at 07:52 AM ---------- Previous post was at 07:41 AM ----------
well I'm calling T-mobile now but the phone is SIM Unlocked and I tried a working AT&T sim that used to work on this phone and a Boost mobile sims that worked and it won't read those either, it doesn't say unsupported sim.. just no sim card. So I haven't a clue. I'll post if they give me a fix for it for anyone else that may need a solution to this.
Thanks for taking the time to answer me though estallings15 , I appreciate that, I hit the TY button, people don't do that enough.
---------- Post added at 07:54 AM ---------- Previous post was at 07:52 AM ----------
Yea I had too. The new wifi calling won't work without the new SIM. The wifi calling that you turn on in settings,, without the app. on my Samsung Galaxy S 2, but my HTC Glacier,, Mytouch 4G has the app. It was one of the first android phones that came with it.
OKAY I Just called T-Mobile, here's the short and skinny of it. The Tech guy ran a few tests.. whatever, **** I already tried. He said it was a device issue not a sim card issue. I can't be issued a replacement because it was dropped and the power button popped out of it so I have to go through my cell phone insurance. To Replace it costs $130. If it was my Samsung galaxy S 2, or my Tablet I'd do it but for my back up, old ass, unnecessary phone, no way. I'd of paid maybe 40 or 50 bucks tops. But the bottom line is I don't need it so bad I'd spend 130 on it. lol. So if anyone on here happens upon a solution to this problem give me a shout out I'd be thankful.
Kn0t

Verizon Certification - Missing?

So according to this CNET article Verizon network certification is not complete.
That is a problem for me. If it doesn't get Verizon certification, it is of no use to me.
https://www.cnet.com/news/essential-phone-ships-after-two-missed-ship-dates/#
Got this from their support today:
Thank you for your question. We expect to receive Verizon certification soon. Though it is not certified by Verizon, it does work on the their network. You will need to make sure you are using a NFC nano SIM for full functionality. Have a great day.
Sincerely,
Emily
Essential Customer Experience Team
Click to expand...
Click to collapse
I'm using a Xiaomi Mi Note 2 on Verizon right now and it works fine. I have VoLTE. No Wifi calling though. I'm 99.9% sure Verizon never certified this phone.
What I should have said, is that if it doesn't work right out of the box, it's no use to me.
When I got my Nexus 6P you had to jump through a few hoops because you couldn't get a SIM card.
You had to have an existing active phone.
is it really an issue though? just swap the sim from your phone into that one and it will work. only issue comes from if you don't already have a phone with a nano sim or can't use a buddies phone to help. yes hoops like that suck but it had to be expected that verizon would take way longer than everyone else.
jerflash said:
is it really an issue though? just swap the sim from your phone into that one and it will work. only issue comes from if you don't already have a phone with a nano sim or can't use a buddies phone to help. yes hoops like that suck but it had to be expected that verizon would take way longer than everyone else.
Click to expand...
Click to collapse
Only if it doesn't work when I drop in the SIM.
I have a Nexus 6P and I've been through the whole thing about phones not being certified.
Sometimes, though, not being certified, also means not working.
NeutronBomb said:
I'm using a Xiaomi Mi Note 2 on Verizon right now and it works fine. I have VoLTE. No Wifi calling though. I'm 99.9% sure Verizon never certified this phone.
Click to expand...
Click to collapse
I thought about trying a mi note 2 how is it and you get all the bands???
Sent from my Pixel XL using Tapatalk
oneandroidnut said:
I thought about trying a mi note 2 how is it and you get all the bands???
Sent from my Pixel XL using Tapatalk
Click to expand...
Click to collapse
It's actually really good. I was running Resurrection Remix on it so pretty much stick with some tweaks. I get all the LTE bands on Verizon and have VoLTE. I get good data speeds. The battery is really good. Overall it's a nice phone. It's just hard to go back to bezels after having a Mix, a G6 and an S8+. This was just supposed to be a serviceable phone to hold me over while I waited on one of the current crop and it's done its job well.
I got my phone on Friday and used it fine right away. Today Verizon service stopped. Put my SIM back in my Pixel and everything is fine. Switched twice, no Essential, Pixel fine. Anyone else have a similar issue?
etkallio said:
I got my phone on Friday and used it fine right away. Today Verizon service stopped. Put my SIM back in my Pixel and everything is fine. Switched twice, no Essential, Pixel fine. Anyone else have a similar issue?
Click to expand...
Click to collapse
Set your preferred Network to global in the settings.
Didn't help.
etkallio said:
Didn't help.
Click to expand...
Click to collapse
Try factory resetting without the Sim in then install sim and factory reset again. It's how I got the axon 7 to run perfect on Verizon. No need to change settings or anything.
Sent from my ZTE A2017U using XDA-Developers Legacy app
dragonslee said:
Set your preferred Network to global in the settings.
Click to expand...
Click to collapse
Nope.
I started the thread and mine is working great.
Hardware is great.
Selling my 6P since I'm keeping the PH-1.
etkallio said:
I got my phone on Friday and used it fine right away. Today Verizon service stopped. Put my SIM back in my Pixel and everything is fine. Switched twice, no Essential, Pixel fine. Anyone else have a similar issue?
Click to expand...
Click to collapse
I had a similar issue the other day. It just suddenly started working again an hour after I factory reset. I would say don't touch the network settings or use the 4636 menu. That's when I started to have issues.
Sent from my PH-1 using Tapatalk
Enhanced 4G LTE Mode works.
just lost my verizon service on this phone within the last hour or two. sim works fine with the pixel xl.... not good
update: factory reset worked, but still not happy. they better get certification soon from verizon
So I was hoping to switch to Verizon from Sprint after I got this phone. I guess I have to wait for certification since I don't have a Verizon sim?
Check Info menu
etkallio said:
Didn't help.
Click to expand...
Click to collapse
Maybe check information found with this code:
*#*#4636#*#*
I'm on Verizon, set to "Global"

U.S. ATT Compatibility experiences so far? And unlock experiences?

Hi folks,
Considering getting a 6T off the OnePlus site.
For those that got the devices early:
-Do you have experiences on AT&T Network to comment on how compatible it is? I've had some devices use to work well on ATT now not so good due to band migration; just curious to hear how the 6Ts fare.
-Please confirm: both SIM and BootLoader unlocks can be done immediately when purchasing from the OnePlus site (as opposed to the T-Mobile edition that's locked)
-Are there band/frequency differences between the T-Mo and ATT Versions? I'm on ATT but usually have bought "T-Mo" versions of devices because they were less likely to be BL locked; but my last phone (OP3T) broke me out of that cycle.
Any other AT&T-relevant experiences would be appreciated.
Interested in this as well.
I would like to know as well. It's kinda looking like we will have to test it out ourselves.
I am on AT&T with the 6t. I've only had mine for a week but have had no issues with anything network related. I came from a 3T and have better service with my 6T. There were 2 dead spots on my drive to / from work with the 3T that I no longer have with the 6T. I haven't had a chance to root or unlock mine yet due to being busy at work but so far I am happy. I loved the 3T but don't miss it a bit.
I have a 6t that I bought directly from OP that I use as my daily phone on Cricket, which uses AT&T towers. I have no signal problems, and download speeds are great. Anywhere I expect to have LTE I have it.
Phone is by far my favorite device I've had. Easy to unlock, install TWRP and flash kernels, and install mods through magisk!
I've bought my phone but don't get to open it until Christmas. It should arrive in a day or two. [emoji1360][emoji1360]
Sent from my ONEPLUS A3000 using Tapatalk
Works perfectly. Even gets VoLTE calls
Did you do anything special for volte per some of the threads? Also, does ATT visual voicemail work fine without a fuss? It's working well on my rooted 3T.
Sent from my ONEPLUS A3000 using Tapatalk
Funk2641 said:
Works perfectly. Even gets VoLTE calls
Click to expand...
Click to collapse
What did you do to get volte? Was your previous phone an att branded device? I came from an unlocked S8 that didn't get volte and I can't get volte on my 6T. Prior to my S8 I had the 6P which also didn't get volte.
I suggest reading this thread, https://forum.xda-developers.com/oneplus-6t/help/att-verizon-volte-vowifi-calling-t3860031. There's information on how to enable VoLTE settings on the phone. Most of the stuff in that thread pertains to Verizon, but some AT&T stuff too. Ultimately it's up to AT&T to provision your service properly. VoLTE is available. VoWiFi is not. Took me a couple of days & a couple of hours on the phone with AT&T support to get my line provisioned properly because the IMEI wasn't recognized. But that was only days after the phone was released. Would think that shouldn't be a problem now.
Once you get VoLTE working Visual Voicemail should work, but you need to use the AT&T app. However, for me it isn't always automatically retrieving VMs when I get them. My notifications will show I have a VM but I have to open the AT&T VVM app, go into the menu and Refresh. Only then does it pull the VM into the app.
This should be interesting. On my 3T I have ATT visual voicemail working, and it mostly works for transcribing messages (except long ones like my wife leaves...) But I don't think the phone is volte capable so I've never tried setting that up. I don't get to play we the phone til Xmas though!
Sent from my ONEPLUS A3000 using Tapatalk
Frankenscript said:
This should be interesting. On my 3T I have ATT visual voicemail working, and it mostly works for transcribing messages (except long ones like my wife leaves...) But I don't think the phone is volte capable so I've never tried setting that up. I don't get to play we the phone til Xmas though!
Sent from my ONEPLUS A3000 using Tapatalk
Click to expand...
Click to collapse
Yeah. I came from using a 5yo AT&T branded HTC One M7 and VVM worked fine on that. When I first got the 6T (unlocked int'l version) & popped in my sim, I had VoLTE but I couldn't get the VVM app to activate. That's what prompted my call to AT&T support. That's when they told me VoLTE was needed for VVM. I'm not entirely sure how accurate that statement is. The rep tried a bunch of stuff to get it working, including updating my line with the IMEI from the 6T. That's when things went bad. I lost all data completely. Actually, if I switched APNs, I could get 3G data. But it took two days before AT&T sorted it out and I got LTE back. Since then everything pertaining to AT&T service has been fine. I've never found the need for VoWiFi, although it would be cool to have, if necessary. And I wish their Advanced Messaging feature wasn't so limited.
Frankenscript said:
Hi folks,
Considering getting a 6T off the OnePlus site.
For those that got the devices early:
-Do you have experiences on AT&T Network to comment on how compatible it is? I've had some devices use to work well on ATT now not so good due to band migration; just curious to hear how the 6Ts fare.
-Please confirm: both SIM and BootLoader unlocks can be done immediately when purchasing from the OnePlus site (as opposed to the T-Mobile edition that's locked)
-Are there band/frequency differences between the T-Mo and ATT Versions? I'm on ATT but usually have bought "T-Mo" versions of devices because they were less likely to be BL locked; but my last phone (OP3T) broke me out of that cycle.
Any other AT&T-relevant experiences would be appreciated.
Click to expand...
Click to collapse
On att rn. Have been since the op2. No issues at all ? first thing I do is unlock bootloader
I got my 6T (Int'L) on or about Nov. 23, which I had purchased from OT - I am using it on a Family mobile plan which uses T-Mobile towers. VoLTE was not a part of my original service plan..but because I needed a New Nano-SIZED sim card for this phone, adding it to my account wasn't as straight forward as it normally is. Once I switch my number to the new sim card, I got an email saying if I wanted VoLTE/VoWiFi(?) features turned on - I'd have to go to another website (Cricket/Verizon/ AT&T?) to register my new sim card and this would "turn on" the VoLTE features. After all this I get a Bright "VoLTE" Icon on the status bar whever i get my LTE signals - So it is VoLTE capable. Perhaps AT&T is doing something similar to get your VoLTE activated?
My plan is to do some testing next week for basic stuff before transferring my flag from my 3T. Will report back how it goes. Appreciate any other Insights from other users!
Sent from my ONEPLUS A3000 using Tapatalk
Fired mine up yesterday when I got it. Got it all set up, then swapped out the SIM from
my Mate 9, to the OP6T this morning. Apparently the "speed" issues I had with the 9
are corrected with the 6T. I use a Straight Talk MVNO (tracfone) at&t card. Previously,
I was LUCKY to get between 9-10 meg down, 1-2 up. Now I'm getting 33 meg down, 15 up.
Guess the newer phone has a better modem, or the extra frequencies to work more proper
with the newer device.
So far, no issues, working good.
After my experience with the OnePlus One, I was still a little cautious about buying something
from them again, but, on the surface so far it appears they might have their act together.
Stay tuned.
I came from a OP3 been using the 6T with ATT prepaid for the past month and it works great. Far superior in speeds to the OP3. For example at my house I was getting download speeds of about 30mbps on my OP3 on the 6T I got over 90mbps LTE+ at home! I keep pissing off my buddy who just got the brand new iPhone XS on ATT and he is getting half the DL speeds that I am when comparing speed tests :victory:. Don't think VoLTE works on prepaid but I have yet to try to enable it. About to go to nebraska for vacation to test service out there.
Bootloader is very easy to unlock. Did it the second day of having the phone following the Official XDA employees youtube video.

Is it possible for Dual SIM on T-Mobile without flashing international

Does anyone know if it's possible to get the dual SIM working on the T-Mobile version? Im fully unlocked I just don't want to go through that whole process
I only need the second SIM for data only on Visible if it matters (it's a long story as to why lol)
Thanks
No, it's the only way. Converting to the international version is easier than you think, and it's really worth it, believe me.
Sent from my ONEPLUS A6013 using Tapatalk
I can agree. Soon as I could I converted mine to international back in November/December 2018. Best decision ever for this phone
Sent from my ONEPLUS A6013 using XDA-Developers Legacy app
Bought a used Tmobile 6T at a phone shop in Vegas, converted it the next day, unlocked, rooted, debloated, and put google on a leash. Worth doing!

Bouncing back and forth between T-Mobile Tech Support and OnePlus

I recently bought a new OnePlus 6T from a 3rd party vendor on eBay. It is branded as T-Mobile. I put my AT&T SIM card in it and it works great.
I would like to unlock it and remove some of the bloatware. Therein lies the problem.
I tried the T-Mobile way to get a token.... it's been over a month; no response. The phone has never been activated on the T-Mobile network.
So I called T-Mobile. Since I'm not a customer, they sent me to OnePlus Tech Support. OnePlus Tech Support sends me back to T-Mobile saying that they have to send the token.
Does anyone have some insight as to what I can do?
Never buy a T-Mobile device ever again [emoji16]
Thanks, that's REAAALLLL helpful. :silly:
Or just simply convert it to International version with modified MSMTools around here.
I have gone this route for easy bootloader unlock, not to mention two active SIM card slots on my T-Mobile OnePlus 6T (they refused to grant the SIM unlocking as long as I keep on paying off the OnePlus 6T off, so I converted it to International OnePlus 6T version to be able to be unlocked - I got better luck with my OnePlus 8T this time though).
Sent from my KB2007 using Tapatalk
Dr. Mario said:
Or just simply convert it to International version with modified MSMTools around here.
I have gone this route for easy bootloader unlock, not to mention two active SIM card slots on my T-Mobile OnePlus 6T (they refused to grant the SIM unlocking as long as I keep on paying off the OnePlus 6T off, so I converted it to International OnePlus 6T version to be able to be unlocked - I got better luck with my OnePlus 8T this time though).
Sent from my KB2007 using Tapatalk
Click to expand...
Click to collapse
So is there an idiot's guide to using the MSMTools? I installed it on my PC, and installed the drivers. The phone never shows up in the tool, no matter what I do. And the tool itself is lacking in any kind of explanation of what to do or how to do it.
Semi-newbie here.... haven't rooted or messed with a phone in over 4 years (last one was a OnePlus original phone). Thanks for patience and understanding.
TheImpalaKid said:
So is there an idiot's guide to using the MSMTools? I installed it on my PC, and installed the drivers. The phone never shows up in the tool, no matter what I do. And the tool itself is lacking in any kind of explanation of what to do or how to do it.
Semi-newbie here.... haven't rooted or messed with a phone in over 4 years (last one was a OnePlus original phone). Thanks for patience and understanding.
Click to expand...
Click to collapse
I did finally get this to work (sort-of). My phone still says T-Mobile when it boots up and has the T-Mobile apps on it.... what's up with that?
I will have to find the conversion guide.
EDITED: Here you go. https://forum.xda-developers.com/oneplus-6t/how-to/t-mobile-6t-to-international-t3888307/amp/
Sent from my KB2007 using Tapatalk

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