The process is simple and the prices they quote are good but they hide the full terms and conditions away in order to deduct more than expected from their original valuation. The website says they only consider cosmetic issues when you class your phone as being in 'good' condition, but in actual fact they take the health of the battery into account as well, which allows them to easily deduct £25 (for an iPhone) off the amount offered. By that point the valuation of the phone on rival websites is lower than their adjusted one, so you have no choice but to accept it. Sneaky.