Okay lah, make a simple guide for you guys.
1. If you have an existing messaging thread for the person you want to message to, click on that, and you can see the switch button below (2 arrows button).
2. If you do not have an existing messaging thread, you WILL NOT see a "switch" button at the below.
3. If you wanna text a person without an existing messaging thread before, and you do not find a switch button below, follow the guide(the pictures) below
- Go into your messaging hub, press the "+" button to create a new message, at the top you will see a tiny "+" button at the right side, click on that, choose the person you wanna text and it will prompt you which number you wanna text. Simple, just that quite a number of people do not see the mini "+" symbol there.
see the guide i made for you