touch not working .
hiii guys i have iphone 4s sometimes when i try to pickup calls i m not able to do this , my phone,s touch didn't work ......what should i do .......
iPhone 4S, iOS 7.1
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Read this http://support.apple.com/kb/TS1827?utm_source=twitterfeed&utm_medium=twitter
If that doesn't fix it visit an Apple store