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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)?

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The screen brightness setting may be something that is applied after "sim validation". But I am only guessing... – Ryan Conrad Feb 22 '11 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 '11 at 23:24
I haven't seen anything else change, besides having to re-enter my account passwords. – Matthew Read Feb 23 '11 at 0:15
up vote 0 down vote accepted

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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