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Community Council | Posts: 4,920 | Thanked: 12,867 times | Joined on May 2012 @ Southerrn Finland
#51
Originally Posted by pichlo View Post
Guessing is the only thing we can do, given the information available.

Connecting to a GSM network = a large spike in current drain. Just inserting the SIM card on its own should do nothing of the sort, but inserting the SIM card and connecting to the network is a different issue.
Actually inserting a SIM card does a lot of things, the power spike caused by PA is not the only drain on the system.
And remember that the device can also register to the network without a SIM card at all; as 112 calls need to be made at any time regardless of the device lockstate or SIM state (or presence)

So, I assume this could be the scenario leading up to problems when simcard is inserted;
- the device notices a SIM insertion notice
- baseband processor (or integrated baseband process) starts running and allocating air resources
 

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