If you use a burner phone you already have two sim cards. If you’re going to contact escorts via whatsapp or similar apps you still can keep your name unrevealed with your original number. 

Anyway, the best way to keep things secret is to use a burner phone. Second choice is to use two numbers on one phone, like i mentioned before. If i understood correctly, you want just to conceal your name, not your phone number?

That means paying for 2x sim cards.

I have treid setting up a multiple user, it al workss on the same no, but hides my real name.

Some android phones have two slots for SIM cards which means you can use two phone numbers on a single phone and can choose from which one to call, send messages etc...

I have been using a burner phone for escort booking but I see you can set up another user on an android phone, has any one tried this, does it work?