Open "Photos" app
or "Gallery" app 
(Y51, Y61, Y81):
- open a picture,
- tap on
,
- tap on "Use as...",
- tap on 
"Contact photo",
- select a contact,
- crop or resize the photo, if needed,
- tap on "DONE" to save.
* Click here to know how to associate a picture with a contact using Contacts app .
HARRY2 - JERRY3 - LENNY5 - POWER U30 - SUNNY3 - SUNNY3 MINI - TOMMY3 - VIEW GO - VIEW LITE - VIEW MAX - VIEW2 - VIEW2 GO - VIEW2 PLUS - VIEW2 PRO - VIEW3 - VIEW3 LITE - VIEW3 PRO - 64+4 - VIEW4 - VIEW4 LITE - VIEW5 - VIEW5 PLUS - Y50 - Y51 - Y60 - Y61 - 16+1 GB - Y80 - Y81 - Y82 -