Can I install the Verizon Messaging app on an Android phone and have it use a different number than the Android phone. It never asks what number I want to use and it won't let me change it in the settings.
If it's the Verizon Message+ app, the number it is associated with is established when you install/setup the app. If you want to change the number, you will have to uninstall it and reinstall. Actually, I don't remember if it defaulted to my phone's number or gave me an option to enter. When I installed it on another device on my account (iPad), it prompted me to enter a number (for Integrated Messaging).
You have a great question! With Verizon Message+, you can link other devices to the app using the same login information. To better assist you, I'll be sending you a Private Note, please reply to it, so we can further assist you.