Unlocking SM-T217S Galaxy Tab 3 Sprint. - Galaxy Tab 3 Q&A, Help & Troubleshooting

I have the MSL code but when I put a sim card in for ATT and reset the device it says invalid sim card. I never get an option to enter the code in to unlock the device for another carrier. I am stock firmware not rooted. I actually tried loading ATT stock firmware on to the tablet and that didn't work at all. I can't take it to sprint because the person I bought it from is not in good standing with them.
Any help would be awesome!

I know this is old, but did you ever get your tablet sim unlocked?
I have one I have been trying to get unlocked, using an idoneapps unlocking app to debrand and unlock my tablet. I’ve run the app several times and while it got rid of the sprint branding and boot image, and says sim unlock successful, I keep getting invalid SIM card error.
ive reset network settings, my tablet is stock 4.4.2 firmware and rooted.

Related

[Q] Phone not allowed mm#6 error message

Phone: SHG-I317
Carrier: AT&T
Current Firmware: 4.1.1
Hey guys, I purchased this phone and have yet to officially activate it. I downgraded from 4.1.2 so that I could unlock it to work on other networks. I did the unlock procedure and I attempted to put in a METRO PCS Sim card but I get: Phone not allowed mm#6. The phone is not blacklisted as Ive checked numerous sites online and even went to a AT&T store and they were able to pop a AT&T Sim card in and it worked just fine.
I tried to search this issue but the only thing I can come up with was that it could possibly be blacklisted but Ive ruled out that possibility for now.
Could it be that the unlock was unsuccessful and I need to do it again? But then how am I supposed to know that it was successful without another carriers sim card? is there something that changes in the settings or something?
Thank you very much for your help.
http://forum.xda-developers.com/showpost.php?p=51349788&postcount=4

Requesting network unlock hang

Hi guys, I'm trying to network unlock my M8 to use in Germany. I've inserted the card and typed in the network unlock code that I bought. Unfortunately, it is hanging on "Requesting network unlock'
I have tried factory resetting the phone.
What can I do?
Thank you
Are you stock, which carrier?
AT&T Skydragon rom
Try stock rom if you can see if that helps. Do a backup of your current rom, flash stock then restore backup
I'd suggest go back to complete stock also.
thanks, going back to complete stock worked. However my SIM card is locked every time I turn on the phone.
What do you mean your SIM card is locked? Do you mean you have to enter a pin to unlock the screen?
Network unlock requested?
Hi man,
I have the same problem.... Canadian Htc One m8 google play edition locked to Bell... I have rooted and unlocked bootloader... unable to s-off...
tried to sim unlock my device and after inserting another sim and unlock code it just hangs on the screen saying " network unlock requested...
Tried everything and nothing helps....
maybe some developers here can figure it our...

[Q] Pls Help! Need to determine unlock status asap. Also, USSD codes failing

Hi.
I am unsure if my phone is unlocked and can proceed with porting my number over to Metro PCS. Please help me with advice how to proceed. I decided to move my service to Metro PCS since they are now a Tmobile company and after lots of research, I found that I can use my current phone/software as long as it was unlocked. I recently purchased my Galaxy s4 second hand and assumed it was not unlocked. I had immediately rooted it and flashed a new rom (Insane Kitkat 4.4.4). The phone has been working well. I already have requested and have my unlock code from Tmobile.
When I went to the Metro PCS store to port over my number, the phone did not request an unlock code when inserting their Metro PCS sim card (not activated). They said that my phone may already be unlocked or that it may not need to be unlocked since Metro is now owned by T-mobile. They stated that it may work if they go through the entire registration process, port over my number and activate it but that it would be a gamble. If it did not work, then I would not be able to go back and reactivate my sim immediately with Tmobile since it would then be in deactivated status with them.
I tried to find out if it is already unlocked by *#7465625# but my phone will not run this or any other USSD codes to verify. I keep getting errors when trying any USSD codes. A message says 'USSD code running' then "unable to process request".
A friend of mine has an activated Galaxy S4 on Metro PCS and I tried inserting her sim card to prompt for the unlock code but my GS4 just booted normally then showed 'not registered on network'. It did, however, have cellular signal bars. When I inserted my Tmobile sim into her GS4 it did ask for the unlock code normally.
I am at a loss now..
funny, I like to know if there is a way to check carrier unlock status for simcard without having to put a simcard in.
T-Mobile phones work with metropcs without the need to unlock
Could the custom rom be suspect?
Maybe need a stock rom to get carriers sorted out, then go to custom roms.
Pp.
serio22 said:
T-Mobile phones work with metropcs without the need to unlock
Click to expand...
Click to collapse
I ended up contacting Tmobile and they stated that the phone showed unlocked status already but I think you are correct. I wasn't aware they could tell me this. It was very fast and super easy to find out.
I have the phone working great on Metro PCS now. USSD codes still failing though...

Device sim unlock issue

So I did ths hole unlock process from AT&T and got a SIM unlock code but when I put it on my phone I get a error saying incorrect password I called AT&T and they told me to do the process over again I'm curious if this is because I'm running a non stock rom than the AT&T Rom I'm currently using Viper. Any ideas?
Your curiosity is correct .. only the original stock ROM you can do SIM unlock.

can ZVH be sim unlocked?

I am living overseas and my Sprint phone had a T-mobile sim card.
After arriving is not working decided to update to zvh since I believe it may have to do with roaming settings.
After flashing ZVH stock thru TOT I lost my international sim unlock.
Since the phone says I have a invalid SIM the activation is not working and I cannot do UICC unlock.
I tried using simfree and other unlock methods like copying the telephony.db from the unlock files but it does not appear to be working.
Any idea what are my options? Do I have to downgrade?

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