ZTE Blade 3 - Manual (Page 13)

13
Installing the SIM Card, microSD Card, and
Battery
Switch off your phone before installing or replacing the battery or
the SIM card. The microSD card can be installed and removed
while the phone is turned on.
Unmount the microSD card before
removing it.
1. Remove the back cover.
2. Hold the SIM card with the cut corner oriented as shown and
slip it into the card holder.