Question about Apple iPhone Smartphone

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Sim card causes iPhone to overheat and drains the battery.

The overheating and battery drain occurs only when I use a specific sim card. The UAE Etisalat sim card. I also cannot receive calls 90% of the time with full network coverage. The Etisalat sim card works 100% in my Nokia.
When I switch back to my Singapore Mobile One sim card, the iPhone behaves normally with no overheating and no unusual battery drain.
This phenomenon is a regular occurrence and I have clean restored my iPhone plus reseated the sim cards. My spouse's iPhone 3G S is working properly with another Etisalat sim card.


My iPhone 3G S is a factory unlocked unit bought from the Apple Store in Australia.

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I've tried to lock the iPhone to my tele provider in stead of letting it search for available networks (the automatic option in settings). Seems to work. But I will also get a new sim card. Strange problem though...

Posted on Sep 10, 2009

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Posted on Jan 02, 2017

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