My iPhone 4 vibrates by itself.

[hcho3]

My Iphone4 vibrates by itself. Anyone know why this is the case? It makes so little noise. It doesn't vibrate all the times. Maybe once in every one hour? Please help...
I just also realized that it is downloading data. I turned off my push notification. So, dunno why..

 

[dave420]

Do you have it checking e-mail every hour? Sometimes it is not so obvious when it vibrates for new e-mail.

 

[rick41:]

If you're a woman, than congrats!

 

[hcho3]

Could be email.... I am going to check, but my gmail is not set up to be push email. I thought.

 

[Lostanddamned]

You might be knocking the silent switch on and off... My 3GS used to do that,have a genius look at it?

 

[mrathee]

Its probably an app that runs in the background. I find that when my phone vibrates and it wasnt one of the major 3: email, phone, sms - then it was probably me IM client (trillian) on the 3rd page.

i scroll over there and voila.

sometimes the push notifications just dont pop up and it leaves you with a vibration and no idea where it came from

 

[Ezra]

Check your fetch settings for email as well

 

[Outrigger]

If you're a woman, than congrats!

OR a man.

 

[Block]

Turn your volume on and you'll likely know the source the next time the alert goes off.