Use APKPure App
Get Front back camera combined old version APK for Android
Front and back camera at the same time
This app lets you use both cameras of your device FRONT and BACK at the same time,
you can click photos from both of your camera on a single click.
After clicking app saves three photo in your phone, one which is clicked with your back camera, one which is clicked from your front camera and one is the collage of both files.
Have fun using this app...