IPhone 4 Not vibrating

Okay, I have the iPhone 4. Just recently I noticed that when I get a text it won't make noise or vibrate when my phone is unlocked and all. Like I can just be sitting there my phone unlocked and it won't vibrate or make any noise even when I'm on Facebook or just setting my phone alarm. When my phone is locked it vibrates and makes noise. Someone please help!

Try using a dildo they vibrate better.

Take your phone to a phone shop.

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