Daughters iphone 4 not working showing no network signal, allegedly water damaged and out of warranty. Returned it to 02 they had it over TWO MONTHS, came back as antenna problem beyond repair and wanted to sell us new phone. Took phone to local Asian repair shop, they spent 30mins and came back with the same answer, bin it. Last resort Found AJR on the internet. Phone was back up and running like new THE SAME DAY!! I cannot recommend these guys enough, they saved us £100s. Dont bother with dodgy phone shops or get scammed into expensive new kit, give these a try first. If they cant fix it there is no charge so you have nothing to loose.