What does double nano sim card slot mean? A professional electronic connector manufacturer will answer you: The dual nano sim card slot is a nano with two card slots.

According to relevant information and data, the dual nano SIM card is a type of mini SIM card for mobile phones, which includes two nano SIM cards. Nano SIM card, also known as the fourth form factor integrated circuit board, is the new generation of mobile SIM card. Smaller than Micro SIM cards, it only has 60% of the area of the DI first generation SIM card, with a specific size of 12mmx9mm and a 15% reduction in thickness.