Nokia 311 - Manual (Page 9)

Insert the SIM card and battery
Switch the phone off, then remove
the back cover.
1
If the battery is in the phone, lift it
out.
2
Slide and lift the holder. Put the SIM
in with the contact area face down.
See 1.
3
Lower the holder, then slide it locked.
4
Line up the battery contacts, then
push the battery in.
5
Replace the back cover.
6
9