LG Optimus L70 User Manual page 17

NOTE The battery must be fully charged initially to improve battery lifetime.
Inserting a microSD card
Insert a microSD™ card to use the camera and other multimedia features.
Multimedia contents can be saved in the microSD card.
NOTE This device supports up to a 32GB microSD card.
1. Remove the back cover as previously described.
2. Insert the microSD card into the slot. Make sure the gold contact area is
facing upwards.
Getting to know your phone
15