Apn not saving - Sprint HTC One (M7)

Cant get cyangenmod sprint m7 to save apn

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GSM/WCDMA/LTE auto doesn't seem to work with custom rom (ARHD31)

Hi xda,
I'm hoping someone here can point me to the right direction. I have an European HTC ONE. I'm in Portugal, I ordered it from Spain, and the CID no. was T-MOB101 from Germany (it's unlocked). Anyway, the LTE frequencies are the same, and everything worked just fine with stock. I unlocked the bootloader and did S-OFF with rumrunner when I had hboot 1.54.
I then installed Android Revolution HD 30 (now I'm on ARHD31) with data wiping in AROMA. After that I noticed that something was wrong with my connectivity: it just switches from 3G to H and back to 3G again, and so on. So then I changed my CID to 11111111, flashed the latest 3.62.401.1 firmware and re-flashed the ROM. It made no difference.
I'm still able to get LTE if I force LTE-only through *#*#4636#*#* in the dialer. It works, but then I'm not able to send or receive phone calls and SMS. If I choose LTE,CDMA mode, or GSM/WCDMA/LTE auto, I start with LTE (if available), but as soon as I try making a phone call, it switches to 3G and after I hang up, it stays with 3G/H, and doesn't switch back to LTE...
Any thoughts? I'm pretty clueless, and I don't see anyone else here having problems...
Here are the details of my phone as it is:
M7_UL S-OFF (rumrunner)
CID-11111111
hboot 1.55
radio 4A.21.3263.04
I have yet to update (downloading v31 as I type)
your issue is sometimes caused by a dirty flash.
I would re-install but when given the option choose to have the settings wiped (this does NOT delete any of your stuff the required settings for the install
Similar issue with my HTC ONE. 3G/LTE worked with stock HTC ROM, but then I flashed latest Android Revolution HD GE and lost data connection. Network status is not changing for me, just stays GSM all the time. I also tried flashing stock GE and have received OTA updates, but still no data connection... This is super annoying
I contacted my mobile operator and 3G/LTE started to work auto-magically.
br_alm said:
Hi xda,
I'm hoping someone here can point me to the right direction. I have an European HTC ONE. I'm in Portugal, I ordered it from Spain, and the CID no. was T-MOB101 from Germany (it's unlocked). Anyway, the LTE frequencies are the same, and everything worked just fine with stock. I unlocked the bootloader and did S-OFF with rumrunner when I had hboot 1.54.
I then installed Android Revolution HD 30 (now I'm on ARHD31) with data wiping in AROMA. After that I noticed that something was wrong with my connectivity: it just switches from 3G to H and back to 3G again, and so on. So then I changed my CID to 11111111, flashed the latest 3.62.401.1 firmware and re-flashed the ROM. It made no difference.
I'm still able to get LTE if I force LTE-only through *#*#4636#*#* in the dialer. It works, but then I'm not able to send or receive phone calls and SMS. If I choose LTE,CDMA mode, or GSM/WCDMA/LTE auto, I start with LTE (if available), but as soon as I try making a phone call, it switches to 3G and after I hang up, it stays with 3G/H, and doesn't switch back to LTE...
Any thoughts? I'm pretty clueless, and I don't see anyone else here having problems...
Here are the details of my phone as it is:
M7_UL S-OFF (rumrunner)
CID-11111111
hboot 1.55
radio 4A.21.3263.04
Click to expand...
Click to collapse
What carrier are you on? ARHD had some issues with users on T-Mobile. If you are on T-Mobile, Try this...
With a file explorer, go to system/customize/ACC/ and open "default.xml"
search (near the end) and modify the line <item type="integer" name="sku_id">42</item>
Change the 42 to 11 and save.

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