Use APKPure App
Get Second Sim Dialer - Dual Sim old version APK for Android
Do you have dual sim? This is dialer for second sim
This is application for seller, business man etc and all of dual sim person
You choice one sim.
If you call in this app, Calls the selected sim
You don't have to choose sim again.
You make other address book, not phone book
You can backup, restore to google drive.