Sprint HTC A9 Sim Unlock

Devicerepair

New member
Feb 14, 2016
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Hello I have a Sprint HTC A9 that has been successful unlocked for domestic use, but I have voice with no data. I have S-Off, boot loader unlocked, running stock os. Has anyone else ran into this problem? Can someone please advise?
 

DeVoe86

Member
Sep 3, 2014
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9
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Albany, NY
A friend mentioned that the Sprint variant might not have correct bands installed to be compat with other carriers. I'm wondering if replacing the radio firmware with the developer edition version would work, but I can't get around simlock to test.
 

Devicerepair

New member
Feb 14, 2016
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There is a guy from Craigslist in my area that did it and he will not tell me, I asked. If there is any kind of way that I can back it up, screen shot it, or whatever. Someone please let me know. I don't have any personal data on it, because it has no data so I'm not using it yet. I don't care about sharing. Let me know and I'm more than happy to.
 

DeVoe86

Member
Sep 3, 2014
6
9
0
Albany, NY
There is a guy from Craigslist in my area that did it and he will not tell me, I asked. If there is any kind of way that I can back it up, screen shot it, or whatever. Someone please let me know. I don't have any personal data on it, because it has no data so I'm not using it yet. I don't care about sharing. Let me know and I'm more than happy to.
If it's an MSL code, he should have supplied that for you. I think MSL is unique to the IMEI/MEID/ESN of your device.

About your successful unlock, congrats! Your success let's me know it's do-able. I'm calling a local computer repair shop that offers unlocking services tomorrow. :fingerscrossed:
 

kozimor

Member
Jan 5, 2011
11
6
0
I've tried a half dozen ways to get this phone unlocked, but so far I've come up empty except for one scenario:

S-OFF
1. Change CID/MID to unlocked and flash unlocked RUU. Phone works fine, radio not functional.
2. Change CID/MID to sprint and flash sprint RUU. Phone will work with T-mobile SIM for one boot-up. As soon as phone is rebooted the SIM locks.

You can't just reflash the sprint RUU either. If you want to get another successful boot, you have to flash the unlocked RUU, then the sprint RUU and you'll get one boot. My only guess is something in the partitions is zero'd out by the unlocked RUU. I've also tried using the CM13 build immediately after the sprint RUU, and again I get one boot, but as soon as I reboot, CM13 shows sim not inserted.

Perhaps someone can make sense of this.
 

scsc168

Member
Sep 13, 2016
6
1
0
hmmm.....I am seeing exactly the same thing. put in T-Mobile's sim card. the phone is working fine but no data. anybody got Sprint version of HTC A9 to work on GSM network?
 

scsc168

Member
Sep 13, 2016
6
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put the correct APN and DATA works fine
Wow.... you are a life saver Lussardi! Thank you very much!

My HTC A9 has delivered APN setting, which cannot be modified. However, I was able to create a new APN manually and use that one. After that, data started to work. So far, I see it was able to connect to 4G and also LTE. At one place with strong LTE signal, i tested the download speed, and it was 82mbps. I have never seen that kind of download speed on my iPhone.

Thanks,
Sean
 

Adjutant

New member
Mar 18, 2014
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// , Did you unlock an HTC One A9 [Sprint] for complete LTE on T-Mobile or on AT&T?

// , Let me make sure I understand this correctly.

Can I do the following:

1. Unlock a Sprint HTC One A9.
2. Buy a data-enabled T-Mobile SIM card or AT&T SIM card.
3. Enter APN & Data settings.
4. Use that same HTC One A9 with T-Mobile or AT&T, with no loss in performance?

:D If this is true, that surprises and pleases me. :D

I assume that one can unlock an AT&T HTC One A9 for use with T-Mobile with no loss in performance, as well?

I found the following for my research about this question:

https://unlocklocks.com/blog/how-to-unlock-htc-one-a9-by-unlock-code/

http://forum.xda-developers.com/sitesearch.php?q=htc one a9 unlock

http://forum.xda-developers.com/one-a9/general/sim-unlock-free-help-to-help-t3307036
 
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scsc168

Member
Sep 13, 2016
6
1
0
// , Let me make sure I understand this correctly.

Can I do the following:

1. Unlock a Sprint HTC One A9.
2. Buy a data-enabled T-Mobile SIM card or AT&T SIM card.
3. Enter APN & Data settings.
4. Use that same HTC One A9 with T-Mobile or AT&T, with no loss in performance?

:D If this is true, that surprises and pleases me. :D

I assume that one can unlock an AT&T HTC One A9 for use with T-Mobile with no loss in performance, as well?

I found the following for my research about this question:

https://unlocklocks.com/blog/how-to-unlock-htc-one-a9-by-unlock-code/

http://forum.xda-developers.com/sitesearch.php?q=htc one a9 unlock

http://forum.xda-developers.com/one-a9/general/sim-unlock-free-help-to-help-t3307036
My Sprint version of HTC A9 has been working on T-Mobile's network for almost a week now. I see no issues so far. Data connection is still good with connecting to LTE most of the time.
 

motoelliot

Senior Member
Nov 23, 2010
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My Sprint version of HTC A9 has been working on T-Mobile's network for almost a week now. I see no issues so far. Data connection is still good with connecting to LTE most of the time.
What process did you go through? Can you provide a little more detail? Thanks...
 

scsc168

Member
Sep 13, 2016
6
1
0
What process did you go through? Can you provide a little more detail? Thanks...
i am not sure if my experience is any different from others here. but, here's the detail of what i went through....

My Sprint variant of HTC A9 was purchased directly off htc.com back in 11/2015. Since the phone was paid in full, I believe the phone was not locked to begin with. I had been using it on Sprint for the past 10 months. Just recently i switched my plan to T-Mobile. With T-Mobile's sim, I see the phone picked up the sim card. Phone started to work (i can make/receive calls) but data would not work. I talked to a couple of HTC rep for support. Both of them told me it should work. From their understanding, A9 and the new HTC 10 should work on all US major carriers...especially mine is a CDMA phone. According to them, CDMA ones can work on GSM....but GSM would not work on CDMA network. Anyways, they were no help for me.

I started doing research on my own and found many people experiencing the same. Phone would work but data would not connect. It was not working until a member on this board, Lussardi, came to rescue. He suggested to manually put in APN. So, I started to check out the APN setting. I see with t-mobile's sim card in, the phone is using a delivered T-Mobile APN setting. I went ahead and created one myself named T-Mobile Manual. I put in APN: fast.t-mobile.com and MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc and left everything else default. After I selected to use this new APN, the phone started to pick up mobile data. Now, depending on the area that i am in, i can see it's using either 4G or LTE. At one place with strong LTE signal, i did a speed test. It was over 80mbps.

Anyways, that's all. Good luck everyone.
 
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Adjutant

New member
Mar 18, 2014
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// , Thank you!

// , Thanks for the thorough response, and for not just giving up.

The large corporations generally don't care too much about usability for this sort of outlier customer experience.