How to get my iphone to work? - 1

I have been given a iphone 3gs and i have put an Amaysim sim card into the phone but the phone doesn't seem to be reading the sim (or detecting the sim). There was a vodaphone sim in it before but it doesn't work when i put the vodaphone sim back into the phone now.

My sim card is prepaid (not sure if that matters).

In the top left corner of the phone screen it says SOS only (not sure if that matters either).

Easy take it to a phone shop and see what's wrong with your phone

Make sure you insert the sim in a proper way.see whether u switch off your sim. If nothing happens, take it to a service centre

My daughter has the same problem with her 3g phone, also with Amaysim. Been trying to call Amaysim for over 3 hours and getting an engaged signal. Very frustrating. Thought it may have been an IOS problem as there was an upgrade to download, but the problem still exists.