This device comes with everything you need to complete the installation
Yes - EZVIZ mobile app is available for download on the Android play store and the iOS app store
EZVIZ cameras are configured to record motion events when they do occur. The recording last for as long as the motion event, and stops when the motion event is concluded.
Yes - You can have multiple EZVIZ cameras setup and added to one EZVIZ account. All devices can be viewed using the EZVIZ mobile app
Yes - you can have this device connected indoors and point it outwards, however you need to turn off the IR light feature, to avoid a reflection through the glass when in night vision mode.
This device has to be powered using the power adapter included in the kit and connected to a 2.4Ghz WiFi network using your Android Tablet or Android Phone or using your iPhone/iPad
Yes - The EZVIZ mobile app is available in the google play and App store
Yes, there is a magnetic base included with the wall mount. However, the screws to mount it are not included. I don't know if it works on 5G.