When your dual sim card used for a long time, please use the ball pen to touch the 12 small metal dots in order to make them connect better.
When your dual sim card used for a long time, please use the ball pen to touch the 12 small metal dots in order to make them connect better.
双卡使用较久时,用圆珠笔笔头部分对准双卡晶片上的12个小突点转一转,增加其突点高度,让卡片与双卡接触更好.