How to Set Default SIM in Android Smartphones

Smartphone users can use dual SIM settings to set default SIM for text messages, calling and mobile data

How and why you should enable SIM lock on your Android

How to Insert a SIM Card Into a Smartphone

On phones with 2 SIM cards, signal ignore settings of default SIM card selected to send SMS · Issue #7167 · signalapp/Signal-Android · GitHub

Android settings - How to configure APN settings

How to Fix Sim Not Provisioned Error on Android or iPhone

How to Insert a SIM Card Into a Smartphone

Can I Use an eSIM and a Regular SIM at the Same Time? - Airalo Blog

How to Set Default SIM Card for Calls - realme [Android 11 - realme UI 2]

How to activate SIM card lock on your Android phone (Detailed Instructions) - News by Xiaomi Miui Hellas