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2.  Pull out the nano-SIM card tray and place the nano-SIM 
card on the tray, as shown. Carefully slide the tray back 
into place. 
 
Charging the Battery 
The battery should have enough power for the phone to turn 
on, find a signal, and make a few calls. You should fully 
charge the battery as soon as possible. 
If the battery is low, a message displays on the screen. As 
the phone charges, the lock screen displays the exact battery 
level on the status bar. 
  Note: The ZTE AXON PRO comes with a special 
5.0V/1.5 A charger that supports fast 
charging capabilities that other chargers 
do not offer. Only use the charger that 
came with this phone for best results.