Back in the day it was called iPod idk if Apple still makes them. I always wondered why phone numbers still exist when majority of people use IM apps over the i

Back in the day it was called iPod idk if Apple still makes them. I always wondered why phone numbers still exist when majority of people use IM apps over the internet. Obstacles can be not all people(friends and family) having the internet or not all people having the internet access atm so you need phone number to reach someone.