Basics14► Dual SIM models: Insert the SIM or USIM card with the gold-coloured contacts facingdownwards.Insert the primary SIM or USIM card into SIM card slot 1 ( 1 ) and the secondary SIM orUSIM card into SIM card slot 2 ( 2 ).12Use caution not to lose or let others use the SIM or USIM card. Samsung is notresponsible for any damages or inconveniences caused by lost or stolen cards.3 Replace the battery and back cover.

Samsung SM-J105F/DS User Manual

SM-J105B/DS

SM-J105F