When VDD is applied, the module enters System Disabled. This is the lowest functional power state.
In System Disabled:
- The cellular modem and all peripherals are powered off.
- SRAM is not retained.
- The POWERKEY pin is the only wake source. Pull it low for at least 10 ms to enter System ON.
The host can place an active module into System Disabled using AT%POWD.
After that command, only POWERKEY can wake the module again. The module performs a full
boot.