this phone sony ericsson z610i locked to movistar network power on and works unfortunately the is no battery no back cover but I managed to test with the spare battery. I have selling only Phone. No battery no back cover no charger. Please check the pictures for conditions so you understand what are you getting you will get exactly what you see in those pictures this this phone needs to be unlocked before you can use in UK or you can use it for Parts still in good condition for its age