iPhone 4s wifi greyed out
Hello everyone, i've update for the latest ios 6.1.3 after a few week until yesterday i find out that my wifi was greyed out and the button cannot turn on i've try to reset all setting and network but it doesn't working i've no idea what to do now plis for those who had been experience for the same situation help me to get rid from this....
iPhone 4S, iOS 6.1.3