Step 1 · Read the article
Open the article and read it at the level above. Then answer the questions below in your own words.
https://smallwhale.org/articles/sms
Step 2 · Questions
1. What is the underlying protocols?
2. What is the initial deployment?
Step 3 · Words to know
Write what each word means, using the article.
GSM (Global System for Mobile Communications)
SS7 (Signaling System No. 7)
SMSC (Short Message Service Center)
RCS (Rich Communication Services)
Step 4 · Two facts in your own words
Do not copy the article. Write two things you learned, the way you would explain them to a friend.