Feature
1. 3 SIM cards for 1 phone. If you have more than 1 SIM card, but you like use phone, how can we do? This product can let you have max 3 SIM online at the same time with your phone.
2. Saving money for travelling abroad and business trips, you only need to put your SIM card at home and then you can still make or answer the calls there will be no roaming charges.
3. Simple and compact, the device easy to set up and size is only 118x113x19mm.
4. Stable signal connected through WiFi, the signal is much more stable by connecting through Bluetooth.
5. Network band:
1) LTE FDD: B1/B3/B5/B8
2) LTE TDD:B38/B39/B40/B41
3) WCDMA: B1/B8
4) GSM: 900/1800MHz

Advantages
1. Put it with your SIM card at home, and you can still access your phone call or message.
2. Voice call and messages transfer through internet to the App on your phone.
3. No roaming fee when you travel to other country.
4. This is a smart dual SIM adapter for your phones
5. Far more stable and secure than other products which use Bluetooth.
6. Suitable for home or office.
7. Small and easy to use.
8. Use internet to transfer the voice and message,stable and power saving.