Nokia 8208 Service Manual page 136

charging is required. If a valid supply voltage is applied while the PMIC is on, the power-on sequence is skipped.
A charging sequence will then be initiated.
Power off
While the PS_HOLD signal from the MSM is high, and the PMIC is in one of its power-on states. Under this
condition, the PMIC continually monitors three events that could trigger a power-off sequence:
The MSM drives the PS_HOLD signal low responding to the pressing of the keypad power button

Battery voltage drops below power off threshold (Battery voltage < 3.2 V)

The PMIC die temperature exceeds its "severe" over-temperature threshold

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System Module and User Interface
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