Dual SIM Battery Case for iPhone 7 (White)

The case functions pretty well. It affords the ability to receive and make calls on a second sim simultaneously. The case also plugs into the phone so you only use one port to charge both devices (micro USB). The case can also function as a second battery to charge the phone in the event your phone charge gets low. The app (MoreCard) works fairly well, allowing the case to connect via bluetooth to the phone. The app in background doesn't appear to suck too much of the battery power of the phone down, but I did notice a draw on the phone causing more frequent charging. Occasionally the app will not recognize the sim card and you have to restart the app and input your sim card pin. Important to note that the sim card installed in the case will not supply data usage to the phone. It will only allow you to send/receive phone calls and SMS. The app does have a nice feature of allowing you to record your phone call in the app. The case itself is physically comfortable without adding too much bulk to the phone. It looks stylish. The case did have one corner break off when I dropped the phone. It's still functioning though. The upper half of the case can slide off if you try to pull the phone from the top if you are pulling it from a pocket. It's kind of annoying in that respect but its ok when you get used to it. If the means was written in the app to allow usage of data from the case sim card position, stabilized the app sim recognition problem(infrequent issue) and they fixed the two case halves so they latched together, I'd give it 5 stars.