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Just now I was texting my fiancé off my iPhone 4 when all of a sudden the sound the keys make when you touch them went out. I went to check the volume but It wouldn't change. The ringer thing showed up but no bars did. All sound works except when I lock it, unlock it, texts, calls, and the keyboard clicks when I blow in the charging port it starts working again. Somebody Explain what's wrong please? What should I do
Also sound works when it's plugged into the charger.
Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.
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