Hi Sierra Wireless Team,
We run into an issue using 2.8V variants of the HL6528RD module.
We use SIM detection but other than in the application note our SIM connector uses a normally closed switch.
So we have a pull-up on GPIO3.
This works well with HL6528RD modules, with the 2.8V variants we observe the internal pull-down is reactivated after a power cycle.
When SIM detection is enabled I cannot change the GPIO configuration to pull-up.
A workaround is to deactivate SIM detection and reactivate it with +KSIMDET command during module initialization.
Is there any other possibility to deactivate the internal pull-down when SIM detection is active which persists a power cycle?