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Do you mind saying how many and why?! Not a good recommendation for the iPhone I would have thought! :D

My first iPhone had 20+ stuck pixels, I even managed to amaze the Apple 'genius' with it.

My second one wasn't reading my SIM card properly, until finally it just said 'No SIM Card Installed' even whilst my SIM card was in the phone.

My third one would randomly choose not to connect to the internet (over 3G) and the screen would go all green and purple (which progressively got worse).

After all this, they sent me a brand new iPhone.
 
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