32gb iphone 4s blocked ?

For sale iphone 4s blocked to uk ,excellent condition ,a few wear and tear marks but otherwise mint ,all works touch screen,wifi ,camera, music ect ,except making and receiving calls ,was found by my daughter when walking the dog i have charged it up and done a restore on it but still cant make or receive calls may be an easy fix for someone in the know ,no charger just phone .Would make cheap iphone 4s or very nice ipod. please contact me on 07598127194 thanks