Unlocked Sprint Samsung Galaxy S9 has been working perfectly fine on T-Mobile for the past month. Today, I had the bright idea of flashing the proper T-Mobile S9 rom from Sammoble. Everything went fine but now each time the phone restarts it trys to now activate with Sprint? After a while it fails and says it will try again in a while (it does give a specific time). Everything on the phone works on T-Mobile as it should, I just have to force close the Sprint OMADM service so that it doesn't continuously run in the background. I would have thought the T-Mobile firmware wiped any remnants of the word Sprint of the phone.
I would greatly appreciate any help or guidance!
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I looked everywhere and cannot even come up a guess to my issue. I have an unlocked T-Mobile Galaxy Note 2, but switched carriers to AT&T and now having weird issues with the phone. I changed the APN settings, but I still get network drops during phone calls and syncing issues with phone numbers.
The phone will randomly drop a call and not be able to call back for about 5 minutes. I am not a noob and I can usually troubleshoot my own issues. Oh yeah, the phone was working fine on T-Mobile and only started the issues when I put a fresh AT&T sim card in it. It doesn't happen all the time either. I could go a week no problem, then three or four days with issues.
Any suggestions on what I should do?
Thanks a ton
lunchmeat78 said:
I looked everywhere and cannot even come up a guess to my issue. I have an unlocked T-Mobile Galaxy Note 2, but switched carriers to AT&T and now having weird issues with the phone. I changed the APN settings, but I still get network drops during phone calls and syncing issues with phone numbers.
The phone will randomly drop a call and not be able to call back for about 5 minutes. I am not a noob and I can usually troubleshoot my own issues. Oh yeah, the phone was working fine on T-Mobile and only started the issues when I put a fresh AT&T sim card in it. It doesn't happen all the time either. I could go a week no problem, then three or four days with issues.
Any suggestions on what I should do?
Thanks a ton
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I have two TMobile Note 2s that work just fine on ATT. No dropped calls and data works fine. LTE reception seems a little lacking but other than that it's fine.
Try a new SIM.
How long have you been on AT&T? Post paid or a MVNO?
kozmo21 said:
Try a new SIM.
How long have you been on AT&T? Post paid or a MVNO?
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Click to collapse
It's actually my sister who has the phone now. I was using it on T-mobile with no issues. I gave it to her, then it started having these problems. Goes to and she gets a brand new at&t sim, still doesn't fix the issues.
Hey all,
Bought a used Note II last week in a parking lot deal. Seller said WiFi is not working, which proved to be true, but that everything else is fine... not true. Phone seemed to work with my SIM, so we sealed the deal.
Since then, the phone never left Edge (2G), even in areas where I should be getting LTE. I've managed to update to rooted 4.3 via Odin (phone showed as "Modified" and therefore wouldn't OTA update from 4.1.1). I've also swapped SIMs and APNs with no move out of Edge.
Any ideas?
Thanks in advance...
Bump?
You are with a Canadian carrier? Some carriers will require you to flash a modem that matches your carrier.
Hey guys. I just got a new S20 plus and it was Sprint branded phone. After tmobile bought sprint, they rolled out an update to download all the carrier stuff to the phone to make it work on Tmobile as soon as a SIM gets inserted. That being said, every time I reboot the phone, it's still running sprints ODADM or whatever software to check the network and make sure everything is fine, so it is definetly still running some sprint stuff.
Is there a way to nuke this thing and make it think it's a tmobile phone from the get go? Like it even has a tmobile boot screen now, but it's still running all the Spring network stuff.
Hey guys/gals,
Cricket gave me a free phone since they kept saying my 7T won't work because it doesn't see the imei as an approved ATT/Cricket phone. Does anyone know if it works on ATT or Cricket? It's much smoother and faster than the free phone I have but I don't want to pop my sim in if it will shut me down again. It's a hassle to call and wait forever for them to reset my account.
So technically it has the bands to work on all of it (except 5g, of course), but if they can't add your IMEI to the network, there's no point. If they can, do it.
So sounds like if I pop the sim in then they'll shut me down. I was wondering if after they phased in the new system that they might stop doing that since if someone has a 3g phone it simply won't work. Do you know if you or anyone tried to use they're non approved phone and they shut it down?
I have a Samsung S21FE (Snapdragon) model SM-G990U bought from Samsung and originally configured for Verizon. I've used it on the Verizon network since I got it, but just recently switched to T-Mobile. The phone is still using the Verizon firmware however data IS working, as well as calling, texting, and voicemail. But there are still a few things that don't seem quite right and I'm wondering if a firmware update would solve it (also, what is the best to update the firmware?).
For instance, I used to see "5G UW" when I was on Verizon, and now on T-Mobile it should display "5GUC" but I'm just seeing "5G". Also, when it boots up I still see the Verizon logo. Also, even when it's displaying "5G" I am not getting true 5G speeds --> more in the range of 70-100 Mbps. I use the OpenSignal app and it tells me other T-Mobile users in my area are getting way faster speeds. I thought the S21FE had all the necessary bands to get full 5G but either it doesn't, or maybe the firmware is blocking it?
For comparison, we also just switched my daughter's Galaxy S21 at the same time from Verizon to T-Mobile. On her phone, the first time she booted up with the T-Mobile SIM card, she started seeing the T-Mobile logo on bootup and now she sees "5GUC" next to her signal (I do not).
In the Software information section under Service provider software version, my phone has: SAOMC_SM-G990U_OYN_VZW_13_0017 VZW/VZW/VZW.
My daughter's S21 now says "TMB" in her software version.
It seems like her phone automatically updated the firmware over to T-Mobile but mine did not.
Again, not sure if a manual firmware update would solve any of the above issues, and what is the best way to change the firmware. Anyone have any experience with switching carriers on a S21FE? Did you update firmware?
skokielad said:
I have a Samsung S21FE (Snapdragon) model SM-G990U bought from Samsung and originally configured for Verizon. I've used it on the Verizon network since I got it, but just recently switched to T-Mobile. The phone is still using the Verizon firmware however data IS working, as well as calling, texting, and voicemail. But there are still a few things that don't seem quite right and I'm wondering if a firmware update would solve it (also, what is the best to update the firmware?).
For instance, I used to see "5G UW" when I was on Verizon, and now on T-Mobile it should display "5GUC" but I'm just seeing "5G". Also, when it boots up I still see the Verizon logo. Also, even when it's displaying "5G" I am not getting true 5G speeds --> more in the range of 70-100 Mbps. I use the OpenSignal app and it tells me other T-Mobile users in my area are getting way faster speeds. I thought the S21FE had all the necessary bands to get full 5G but either it doesn't, or maybe the firmware is blocking it?
For comparison, we also just switched my daughter's Galaxy S21 at the same time from Verizon to T-Mobile. On her phone, the first time she booted up with the T-Mobile SIM card, she started seeing the T-Mobile logo on bootup and now she sees "5GUC" next to her signal (I do not).
In the Software information section under Service provider software version, my phone has: SAOMC_SM-G990U_OYN_VZW_13_0017 VZW/VZW/VZW.
My daughter's S21 now says "TMB" in her software version.
It seems like her phone automatically updated the firmware over to T-Mobile but mine did not.
Again, not sure if a manual firmware update would solve any of the above issues, and what is the best way to change the firmware. Anyone have any experience with switching carriers on a S21FE? Did you update firmware?
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What's the model number?