LTE Suddenly Not Working on TMobile - Sony Xperia XA2 H3123


    Okay, first thing I'm posting this same thing on Sony as well to see if there is anything they come up with, and I've spoken to the TMobile tech department, James, which they have gotten basically no where in resolving this.  Though he was extremely helpful in at least resolving the issue that my number was somehow in a server and set for purging on your side, just weird.


    I've had a brand new Sony Xperia XA2 (H3123) for over a year, working flawlessly on T-Mobile with LTE service showing all the time everywhere I go in Los Angeles areas or other areas as well.  Did my research on this phone prior to buying to ensure I was good to go on frequency's and bands with T-Mobile, as there are other models not on the same bands, but this one in particular is.


    Android 9.0 says fully up to date.


    Problem: starting Oct 5, 2019 my phone no longer can be connected to LTE and RECEIVE incoming calls or texts.  I CAN send texts, make out going calls, use the internet, email comes in and out, but NO incoming calls or texts happen.

    *When I disable LTE, the phone reverts to H+ and all incoming calls and texts happen instantly no issues.


    I really am not sure what could be the problem, besides T-Mobile changing something recently.

    Any help would be truly appreciated in potentially fixing this back to being able to use LTE.


    Things I have done:

    Reset networks. Numerous time.

    Restart phone. Numerous times.

    Checked that the APN is:

    Checked barring is disabled.

    Checked forwarding is disabled.


    Sony Mobile Networks for Xperia XA2 H3123 phone state:

    Primary 4G/5G networkLTE Cat13 700/850/1700/1900/2600 (Bands 2,4,5,7,12,13,17,28,29,66)
    Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A

    T-Mobile network frequencies & technology (website)

    1900 MHz2

    4G LTE




    1700/2100 MHz



    4G LTE




    4G LTE


    According to TMobile's website IEMI check:

    Xperia XA2

    IMEI: ***************

    • Your phone doesn't support Extended Range LTE or Voice over LTE technology.

      All replies

      • pigankle

        Chiming in - I have a never-locked XPeria copmact and have almost exactly the same set of symptoms in Seattle.  I called tech support, who offered the following:

        1. Maybe because it is an unlocked phone.

        2.  Maybe because towers in my area are being upgraded (?)

        3. Here - I'll send you a provisioning file by text and check back in 3 days.


        #3 didn't help, and the other two weren't even concrete solutions, just guesses about cause.


        I don't think it is the Xperia issue, though, because my daughter, who has an unlocked verizon S7, is experiencing the same problems.

        • bestlovex

          I have Apple, and I switch my SIM card to other phone doesn’t  either.  my iPhone 11 suddenly can not use for LTE. Only 4G show up on the side of top. An it can be use 4G data.


          My roommate has T-Mobile to I witch his SIM card to my phone LTE is not working either. I put mine on his phone either.