eli5: Why does the text alert system need to know my mobile carrier?

222 views

Putting a book on hold from my library, and one of the options is to get a text message when it is ready for pickup.

The online form requires me to specify my mobile carrier.

Why is this necessary? It’s not like I need to know if someone is on Verizon or T-Mobile or whatever to send them a text… is this an artifact of a time when this WAS necessary? Or am I missing something?

In: 3

8 Answers

Anonymous 0 Comments

Thanks all. The email-to-SMS explanation makes perfect sense here.

You are viewing 1 out of 8 answers, click here to view all answers.