Check that the battery is fitted and connected:
i.
Each AT211 is supplied with a 510mAh back-up battery, which should be fixed to the
PCB and connected as shown below:
a.
Do not attempt to remove the battery from the cover, once it has been stuck down,
as prising or bending can cause fire and smoke.
2.
Slide the SIM (Micro 3FF format) into its holder:
a.
Note that the AT211 will now power up
Notched corner here
