1. polygon608's Avatar
    I have a Sony Xperia Z. I few days ago, I swapped my SIM Card for the first time. After that, every time I turn my phone on, I have to open call settings, otherwise the phone won't read the SIM Card. This happens with both of the SIM cards now. Before swapping the SIM Card, the phone recognized it as soon as I turned the phone on, but now I have to open call settings every time I turn the phone on. It recognizes the card as soon as I just open call settings. I don't understand why this is happening.
    03-09-2015 09:22 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Does this persist after a reboot?
    03-09-2015 11:11 AM
  3. polygon608's Avatar

    If by "reboot" you mean powering off and then powering back on, then yes, I have done that many times and this happens every time I turn the phone on.
    03-09-2015 05:20 PM
  4. B. Diddy's Avatar
    See what happens if you wipe the system cache partition: https://support.t-mobile.com/docs/DOC-11663
    03-09-2015 07:13 PM
  5. polygon608's Avatar
    OK, I read the instructions and did what they said, but it's still not fixed.

    Could I have damaged the SIM cards while swapping them?
    03-10-2015 06:39 AM
  6. B. Diddy's Avatar
    Not really sure what happened. I doubt the card is damaged--it wouldn't make sense for it to work normally as soon as you go to Call Settings. You might want to consider a factory reset.
    03-10-2015 11:17 AM
  7. bestway#IM's Avatar
    i used these steps in the below URL and that's worked for me
    01-13-2017 08:52 AM

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