Microsoft Lumia 640 LTE Single Sim - Manual (Page 4)

Get started
Before you start using your phone, remove the back
cover and battery to insert the micro-SIM card (also
known as the mini-UICC card).
Remove the back cover and battery
Make sure the phone is switched off.
1. At the top corner of the phone, put your finger in
the seam between the screen frame and the back
cover. Do not use any sharp tools, as they may
damage the phone.
2. Press the middle of the back cover, bend the cover
open, and remove it.
3. If the battery is in, lift it out.