Oh dear, a sad dead iPhone after a day under water. Drying out by burying in rice etc has failed to revive it. So options are:
a) get a cheap basic phone and make do with that for 2 months til my contract runs out. Trying that, but I so miss my iPhone.
b) buy a new iPhone - but need to fill up piggy bank for that, better wait for contract end.
c) take it to an Appple store, the kiss of life from the geniuses may succeed. It didn't, but they offer a refurb replacement for £119. Probably the best option, as it can eventually be sold on for a good price.
d) buy a second hand iPhone on eBay.
Guess which option I chose ... yes, you're right, not the best: option d). So now I find myself getting to grips with 'unlocking' your phone.
A mobile is 'locked' when it's been bought as part of a contract with an operator, so it will only work on that network. You can get it 'unlocked' in one of those dodgy looking stalls and shops, or by the operator, often they charge about £20.
My nearly-new acquisition had been unlocked from Virgin, but caution:
I reset the contents (go round with something called "Mum's iphone"? No thanks!) and whoops, it revealed a lock on O2.
To get it unlocked I have to borrow or buy an O2 sim card and put that in it. Request O2 to unlock it and leave it in for about a day, voila, it should then be 'unlocked'. I hope.
Free if I can borrow an O2 sim, or I have to get a pay-as-you-go sim and put £15 worth of calls on it.