13 
  WARNING! 
To avoid damage to the phone, do not use any other kind of SIM 
cards, or any non-standard nano-SIM card cut from a SIM card. 
You can get a standard nano-SIM card from your service 
provider. 
  NOTE: 
Your phone is designed for simultaneous use of two nano-SIM 
cards in standby mode. However, the nano-SIM cards cannot be 
used simultaneously for calls or the Internet. If one nano-SIM 
card is used in a voice call, the other nano-SIM card is not 
available. This situation is caused by the function of the phone 
and is independent of the network. Such design can significantly 
reduce the power consumption of the phone in standby mode. 
1.  Insert your fingernail into the bottom of the back cover and lift 
it up gently.