I have restarted my phone numereous times (because there's nothing else you can do to an iPhone) and every time it turns back on it'll have bars for a little while and then say " No SIM installed" or it'll go straight to "No SIM". Why is this happeneing and how can i fix it?
iPhone 4, iOS 5.1.1
Sounds like your iPhone was hacked/modified/jailbroken to work
with wireless carrier other than the one it was purchased from. The
update has relocked it to the original carrier. Contact the original
carrier to see if they offer unlocking and if you qualify - only the
carrier to which the iPhone is locked can unlock it.
What does it say when you look at Settings=>General=>Carrier?
Be advised that the previous modifications to change from original carrier
to your local Carrier may have rendered the software unable to be updated or
officially unlocked.
My iphone 4 has been updated to the newest version, but i constantly tells me that there is no SIM card installed. why does this keep happening?
