IMEI 1 and IMEI 2 by Adnan Ghayas

What are the two types of dual-SIM phones?
The two types of dual-SIM phones are:

  • Dual SIM Standby (DSDS).
  • Dual SIM Full Active (DSFA).

How does a Dual SIM Dual Standby (DSDS) device work?
A DSDS device works by switching which SIMs is active at a time.

How does a Dual SIM Full Active (DSFA) device work?
A DSFA device works by allowing both SIMs to be active at the same time.

What can a device do with two separate SIMs?
A device with two separate SIMs can use two separate SIMs to register on two separate networks.

How many IMEI numbers does a device have?
A device has as many IMEI numbers as it does SIM slots.

What is the purpose of the IMEI number?
The purpose of the IMEI number is for your wireless carrier to know which device is trying to access the network.

Where are all IMEI numbers stored?
All IMEI numbers are stored in a database called the Equipment Identity Register (EIR).

What devices are assigned IMEI numbers?
Devices which are assigned IMEI numbers are any SIM-enabled devices including phones, tablets, mobile broadband routers, smartwatches, and IoT devices.

What is the quickest and easiest way to see the IMEI numbers of a device?
The quickest and easiest way to see the IMEI numbers of a device is to dial *#06#.