iphone 4 since downloading ios 7 it wont charge
I have my Iphone 4 16Gb and it worked fine until i downloaded IOS 7 and i cant get it to charge. when i turn it off and plug in the charger it turns it back on but then doesnt charge it. really need help thanks. i have tried 2 chargers both work fine on another iphone 4 tried plugging into a computer and ipod dock, noting works.