Geekeep

Function features:

1. With the app, the iPhone can also use two SIM cards.
2. When you go abroad, you can receive and dial domestic phone calls or send and receive short messages, even if your SIM card does not have the function of international roaming.
3. The smart home box doesn’t need to be carried around, doesn’t need to be recharged. It's always at home or in the office, so don't worry about losing it.