Dell Lightning User Manual page 9

2 Insert the SIM card
Align the angled corner of the SIM card with the angled corner in the card
holder and insert the card. If the card does not fit in the card holder easily,
check to ensure that you have aligned the corner on the card with the
corner on the card holder.
3 Insert the battery
Align the metal contacts on the battery with the contacts on the battery
holder and insert the battery.
CAUTION:
from your phone in any situation. Removing the microSD card could
cause data loss.
You should never remove the pre-installed microSD card
Setting Up Your Dell™ Lightning
9