Android emulators with phone numbers?

Question

I\'m working on a client-server Android application and trying to figure out how to identify different phones/users to the server unambiguously. My first attempt would be to

Answer 1

You should use the number present by the emulator. Eg. usually first emulator that is running has number 5554, second 5555, and so on.

You can use these numbers to make calls, send text messages from emulator to emulator. This, I think, simulates different numbers/users for your purposes.