[One (M7) Q&A, Help & Troubleshooting] escapism2to1:
Hi there erg208, I've tried all of those settings and still no success. Only for a very short time (data will stay on anywhere from 3 seconds into the call to no more than 10 mins into the call....last night was a record with 30 mins into the call) but the moment I begin to do to much surfing or send one too many emails or Gtalk for too long it's like my phone just gives up and the data disconnects and at no point during my phn call will it ever reconnect. I have to hang up my call and INSTANTLY the data turns on with all 5 bars and an H signal. AND most times I have to restart the phn before I can get simultaneous voice and data again. Do u have this issue? May I please ask if you've done an extensive test with your simultaneous voice and data? Meaning have u actually been on a long enough call and seriously surfed the web, sent & received multiple emails, chatted on Gtalk and sent an MMS all during one call and it stay connected? That would be a real test b/c mine doesn't. And if your data does disconnect do u have to hang up the call for it to come back on?? And does it work again if you make another phone call without having to restart your phone? No matter what, having to do either of those things is unacceptable b/c I have NEVER had to with any of my previous HTC devices on Tmobile's network. And I'm a flight attendant so I'm all over this country receiving 3G, 4G and LTE signals and it does it no matter where I am, if I'm moving in a car or sitting perfectly still in the same area with good coverage. Pls let me know your full experience in testing this. I really appreciate your help! Thanks :)

---------- Post added at 03:41 AM ---------- Previous post was at 02:51 AM ----------

Hi there biswasd, I've tried all of those settings and still no success. Only for a very short time (data will stay on anywhere from 3 seconds into the call to no more than 10 mins into the call....last night was a record with 30 mins into the call) but the moment I begin to do to much surfing or send one too many emails or Gtalk for too long it's like my phone just gives up and the data disconnects and at no point during my phn call will it ever reconnect. I have to hang up my call and INSTANTLY the data turns on with all 5 bars and an H signal. AND most times I have to restart the phn before I can get simultaneous voice and data again. Do u have this issue? May I please ask if you've done an extensive test with your simultaneous voice and data? Meaning have u actually been on a long enough call and seriously surfed the web, sent & received multiple emails, chatted on Gtalk and sent an MMS all during one call and it stay connected? That would be a real test b/c mine doesn't. And if your data does disconnect do u have to hang up the call for it to come back on?? And does it work again if you make another phone call without having to restart your phone? No matter what, having to do either of those things is unacceptable b/c I have NEVER had to with any of my previous HTC devices on Tmobile's network. And I'm a flight attendant so I'm all over this country receiving 3G, 4G and LTE signals and it does it no matter where I am, if I'm moving in a car or sitting perfectly still in the same area with good coverage. Pls let me know your full experience in testing this. I really appreciate your help! Thanks