1. zehkaiser's Avatar
    Whenever I make a phone call (Passport, Moto X 2nd Gen, iPhone 5s) my network connection drops from LTE to whatever the next option is available. If Edge is the only other connection I lose data until I hang up.

    Does anyone else experience this? I haven't traveled since switching to T-Mo, so as far as I know it happens in Asheville, NC and the surrounding 25 miles.

    Posted via CB10
    04-02-15 07:25 PM
  2. Al moon's Avatar
    happens to me when theres a bad signa usually edge but on 4g and lte i can talk and surf
    04-02-15 07:29 PM
  3. Frank Lucas1's Avatar
    Yes it happens to me even when I'm in an area with good signal strength

    Blackberry Z30
    zehkaiser likes this.
    04-02-15 07:38 PM
  4. gariac's Avatar
    I don't think you can make a call from LTE unless it is a VoLTE call. That would require calling another VoLTE capable phone on T-mobile at the moment.


    Posted via CB10
    jelp2 likes this.
    04-03-15 03:31 AM
  5. zehkaiser's Avatar
    I don't think you can make a call from LTE unless it is a VoLTE call. That would require calling another VoLTE capable phone on T-mobile at the moment.


    Posted via CB10
    I'm ok with not making voLTE calls, but I'd like to be able to maintain my data connection while making GSM calls. I guess T-Mo's network can't do that. I have been a Verizon customer for about 10 years.

    Posted via CB10
    04-03-15 06:27 AM
  6. gariac's Avatar
    I'm ok with not making voLTE calls, but I'd like to be able to maintain my data connection while making GSM calls. I guess T-Mo's network can't do that. I have been a Verizon customer for about 10 years.

    Posted via CB10
    OK, I misunderstand your question. You should drop into 4g during the voice call, but maintain data service. Of course the data is slower than plain LTE.


    Posted via CB10
    04-03-15 07:52 PM
  7. zehkaiser's Avatar
    Well, that sucks. I wonder why it can't handle LTE and GSM simultaneously. I only have LTE and edge here, so phone calls mean no data for me. :-(

    Posted via CB10
    04-03-15 07:54 PM
  8. gariac's Avatar
    Well, that sucks. I wonder why it can't handle LTE and GSM simultaneously. I only have LTE and edge here, so phone calls mean no data for me. :-(

    Posted via CB10
    Verify that your EDGE is still on TMobile. Or just force your phone into EDGE and see if you have data.

    If you have this problem on so many phones, maybe there is something wrong with your simcard.

    I was in roaming in an area where Tmo had a 4G voice only partner and a 2g voice and data partner. I had cleft my phone in the mode to exclude 2G. Needless to say Tmo waa baffled why I couldn't get data.


    Posted via CB10
    04-04-15 12:28 AM
  9. zehkaiser's Avatar
    Looks like just LTE and GSM for T-Mobile for my area. I'd have to manually connect to AT&T for data while on the phone. I have 2 SIMs in 2 different phones that this will happen on. Does anyone know why LTE is disconnected while the phone is in use?
    Phone calls and data. T-Mo is no help-img_20150405_175756.png

    Posted via CB10
    04-05-15 06:01 PM
  10. gariac's Avatar
    311-580 is US Cellular. Just a FYI.

    Run Signal and see if your display looks like this.
    Phone calls and data. T-Mo is no help-z10_bands.png

    Signal is a free app in BlackBerry World.

    You can only make calls on LTE if the other person is on TMobile and has a VoLTE capable phone.

    Posted via CB10
    04-05-15 09:35 PM
  11. zehkaiser's Avatar
    Phone calls and data. T-Mo is no help-img_20150405_214626.png
    Phone calls and data. T-Mo is no help-img_20150405_214630.png

    I don't care about voLTE calls. I care about making phone calls on GSM and not losing LTE connectivity.

    Posted via CB10
    04-05-15 09:48 PM
  12. gariac's Avatar
    Click image for larger version. 

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    Click image for larger version. 

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    I don't care about voLTE calls. I care about making phone calls on GSM and not losing LTE connectivity.

    Posted via CB10
    I only mentioned VoLTE since that IS how you make phone calls over LTE and still have data.

    As far as I can tell, I use band 2 on UMTS. You also have that band. However, you have more bands than a 100-3 Z10. What is your model number.


    Posted via CB10
    04-06-15 12:58 AM
  13. raino's Avatar
    However, you have more bands than a 100-3 Z10. What is your model number.
    That's a Passport SQW100-1.
    04-07-15 01:46 AM
  14. gariac's Avatar
    Ah yes, I went back and looked at the original post. If the Passport doesn't have a Paratek, it must sure have a lot of antennas.

    He certainly has all the radios. I guess what is left is to see what TMobile offers in his area. I would need a rough geographical location.


    Posted via CB10
    04-07-15 02:22 AM

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