i phone 3gs 8gb spares or repaires -

iphone 3gs in white. turns on but the screen light dont come on so its hard to see anything its on vodafone it has a brand new back on it done by shop but says 16gb but its only 8gb only turns on wen on charge not sure why could be battery i been told (only 3.50 on ebay) selling as futly want 40 no lower shop said it will cost 80 to fix but got a new iphone instead so selling this one cost lower than 20 to fix it your self if you know what you are doing or even using it for parts as the back and front is brand new collection only parkwood rainham me8 9sj