Replace iPhone 5c Logic-board to unlock its network

since you're replacing the phone's memory components, which in turn hold the data about whether it's locked or not, then I guess it would work. you would have to write down the new serial number and IMEI, too of course. make sure to get an american logic board that is unlocked tho. you're better off selling that phone on eBay as "New" and buying an unlocked american one. this will allow you to bypass annoying EU volume restrictions, therefore making the internal speaker louder ;) I own one and it seems louder. probably just an illusion tho