Comparing phone numbers in Android

Question

I need to compare two phone numbers to determine if they\'re from the same sender/receiver. The user may send a message to a contact, and that contact may reply.

The

Answer 1

How about checking if the number is a substring of the receiver's number?

For instance, let's say my Brazilian number is 888-777-666 and yours is 111-222-333. To call you, from here, I need to dial additional numbers to make international calls. Let's say I need to add 9999 + your_number, resulting in 9999111222333.

If RawNumber.substring(your_number) returns true I can say that I'm calling you.