My iPhone has been acting up since I did the upgrade. Not happy at all.

mine has been pretty normal for now after the upgrade.what's your phone doing now?

Every time I get a call it goes black when before you can see who your talking too

@mamaash,

oh then you can just go back to the other ios before the one u just updated it too

your iPhone will go back to normal once you downgrade

@mamaash, how do you switch back

Trying turning it off for 5 min and then turning it back on. That usually helps my phone