Cross platform mobile setup help

Hey everyone,

I’m looking to add some freedom to my mobile device setup and could use some advice from anyone who might be familiar with what I am trying to do.

I am currently using an iPhone, but I generally prefer using android devices. In the past I have regularly switched back and forth between the platforms but it’s a pain to do and (being based in the U.S.) the turning on and off of iMessage tends to confuse the people I communicate with (and confuse their phones on occasion when it fails to acknowledge my number is no longer registered with iMessage). I also just got a Pebble Time 2 and want to use it with android to get the full experience.

Normally I would just make the switch, but I’m hoping I can decouple my setup a bit and get the “best of both worlds.” Due to a recent BOGO deal at T-Mobile, I have an unused line in my family plan that is free. What I would like to do is keep my main phone number tied to the iPhone I have but have it act as a relay for iMessages, calls, and RCS/SMS/MMS messages to my android device that I would carry with me.

Not only would this make switching devices easier in the future, it would allow me to seamlessly go back and forth between iOS and android with almost no disruption whenever I want to.

Here is a simplified list of requirements/questions I need to solve for this setup:

1. How to make and receive calls from my primary phone number on the secondary line (I assume I can setup some kind of call forwarding but that would only cover the receiving of calls)

2. How to send and receive iMessages from my primary phone number on the secondary line

3. How to send and receive RCS/SMS/MMS messages from my primary phone number on the secondary line

Would love to hear this community’s thoughts and advice!