I put a new SIM card in my phone, then took it out and rebooted. Afterwards I noticed the screen brightness was up to nearly 100% (I always have it all the way down). Auto-brightness was off both before and after. Does anyone know why this might happen? Is brightness somehow linked to my Google account (which was invalidated on the phone due to the SIM swap)?

  • The screen brightness setting may be something that is applied after "sim validation". But I am only guessing... Feb 22, 2011 at 16:07
  • Did you see any other settings reset to their defaults? I'd assume that changing SIM cards would cause the phone to reset its settings to default under the assumption that it's a new user.
    – mlevit
    Feb 22, 2011 at 23:24
  • I haven't seen anything else change, besides having to re-enter my account passwords. Feb 23, 2011 at 0:15

1 Answer 1


I'm going to assume that, as suggested in the comments, brightness is (for some reason) one of the settings that gets wiped when the SIM is swapped.

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