Can't receive calls when connected to LTE

Discussion in 'iPhone Tips, Help and Troubleshooting' started by JLemm, Nov 14, 2012.

  1. JLemm macrumors regular

    Joined:
    Sep 12, 2008
    Location:
    Cincinnati, OH
    #1
    I have AT&T and i recently discovered that when I'm connected to LTE (have it enabled) my iPhone 5 will not receive calls. The iPhone says I have full service or at least 3 bars, but when people call it rings once and goes to voicemail. When I turn LTE off I am able to relieve calls. Is anyone else having this problem? Or know how to fix this? It's been going on for about a week.
     
  2. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
    First thing anyone would do is call the carrier and let them know about the issue you are having.
     
  3. CptQuantum macrumors newbie

    Joined:
    Dec 12, 2012
    #3
    incoming calls go directly to voice mail

    I have the identical problem with my iPhone 5. It is location dependent. I have good LTE signal both at home (Takoma Park, MD) and at work (Bethesda, MD). At home, all incoming calls ring and can be answered. At work, incoming calls alway go directly to voice mail. This means that it is a network problem (I am on AT&T).

    You will note that when receiving a call the indicator changes from LTE to 4G (needed because LTE supports data, only). I did some tests and had someone call me at work. I can see the indicater switch from LTE to 4G, but no rings! Next, I turned off LTE (under Settings-->General-->Cellular-->Enable LTE <OFF>. After doing this, all incoming calls ring my iPhone 5 at work. Therefore the problem appears to be related to the handover from LTE to 4G (by AT&T). and not with the iPhone 5.

    I have made frequent calls to AT&T technical support. They have assigned a case number but so far have been unable to resolve the problem and report no network problems. If you check the AT&T forums you will also see that this is a frequent complaint -- not unique to the iPhone 5.

    If AT&T cannot resolve this in a reasonable time I will switch to another wireless service. Good luck trying to resolve this.
     
  4. konradsa macrumors regular

    Joined:
    Aug 25, 2014
    #4
    Sorry to reopen an old thread, but did anybody ever solve this issue? For me, it started now after switching from AT&T to Cricket. At my work, 80% of incoming calls fail with LTE turned on, while outgoing calls/data is fine. Turning off LTE seems to fix it. Also don't see to have those problems at home or other places.

    Never had this problem on AT&T before. Wondering if the AT&T network is just too busy, since lots of people at my work probably have AT&T phones, and the MVNOs (like Cricket) just get a lower priority that causes this to happen.
     
  5. ColdWarrior macrumors newbie

    Joined:
    Apr 28, 2015
    Location:
    North-East Ohio, USA
    #5
    Are you using a phone you bought from Cricket, or are you using an unlocked AT&T phone on Cricket?
     
  6. konradsa macrumors regular

    Joined:
    Aug 25, 2014
    #6
    Using my iPhone 5 that I had previously used on AT&T for 2 years. It's unlocked (but that's actually not required. Since Cricket is on the AT&T network, you can even use a locked AT&T phone with them).
     
  7. ColdWarrior macrumors newbie

    Joined:
    Apr 28, 2015
    Location:
    North-East Ohio, USA
    #7
    Contact Cricket and ask them to re-provision your account.
     
  8. konradsa macrumors regular

    Joined:
    Aug 25, 2014
    #8
    What does this mean to "re-provision account"? Can you elaborate a little what the problem is and how to solve it so that I have a better chance of getting it addressed by Cricket? I have already called them numerous times, and they always tell they reset the account, etc... but nothing seems to help, at least not permanently. It may start working for a day or two, then go back to the same mode as before.
     

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