1. AC Question's Avatar
    I just got my phone wiped and fixed, and the SD card seems to be working, but there is a question mark icon inside of a SD card on the top of my phone, and there is no signal. The signal triangle thing is completely empty and black. I am also having authentication problem on the wifi, but this might be something different. Please help me solve these issues.
    03-19-2015 08:02 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! The question mark in a SIM card icon means there's a problem with the SIM. You may need a replacement SIM card from your carrier.
    03-21-2015 10:37 PM

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