What Is a Double SIM Card?

The dual-use SIM card was launched by Beijing Mobile in February 2013 and is compatible with both ordinary SIM card phones and Micro-SIM card smartphones. The "dual-use" SIM card adopts a groove design, and the Micro-SIM card can be embedded in the outer card holder strictly, and the process of purchasing and restoring the "card holder" is omitted.

Dual SIM card

Right!

Dual SIM card

February 2013, Beijing

Compared with the original method of cutting the card and then inserting it into the card tray, the "dual-use" SIM card has a groove design. The Micro-SIM card can be embedded in the outer Cato tightly and neatly, and it is not necessary to purchase the "Cato"

As of February 20, 2013, "dual-use" SIM cards have been moved in Beijing

The dual-use SIM card ^[4] uses the form of a card holder micro-SIM card. For ordinary SIM card mobile phone users, you can directly pull out the large card on the outer layer of the SIM card and install and use it. For iPhone 4 / 4S, etc. For users of high-end smart phones, they only need to remove the small card inside, and then they can become Micro-SIM cards.