Put your fingernail in the seam between the back cover and the display close to the corner of the device, bend the back cover open, and remove it. If you have difficulties with opening the back cover, try opening it from the USB slot. Do not use any tools, as they may damage the phone.
Slide the nano-SIM in slot 1 with the contact area face down. If you have a dual-SIM phone, slide the second SIM in slot 2.
If you have a microSD memory card, slide the card in the memory card slot.
Put back the back cover.
Use only original nano-SIM cards. Use of incompatible SIM cards may damage the card or the device, and may corrupt data stored on the card.
Use only compatible memory cards approved for use with this device. Incompatible cards may damage the card and the device and corrupt data stored on the card.
Tip: To find out if your phone can use 2 SIM cards, see the label on the sales box. If there are 2 IMEI codes on the label, you have a dual-SIM phone.
Important: Do not remove the memory card when an app is using it. Doing so may damage the memory card and the device and corrupt data stored on the card.
Tip: Use a fast, up to 400 GB microSD memory card from a well-known manufacturer.