My friend bought an iPhone 4S from eBay about two weeks ago, locked to T-Mobile (UK) for about £250. Never used it because he's got an SIII, I dunno why he bought it to be honest... so since it was going to waste he sold it to me for £175. I use O2, so need to get it unlocked... and I didn't even think at the time - seemed like a bargain - but after reading into people selling stolen iPhones, I've used various IMEI sites (free) to check if anything is flagged with the iPhone I bought. Nothing does, but I've not used a 'proper' one, such as Check Mend etc., because am a bit wary in case it DOES comes up as being 'dodgy', and what would happen, since I'll have to use my email address and card details etc. to pay for the check, and don't want that linked with a phone that could be stolen. I'm a bit stuck on what to do. Any ideas?