If you backup or synchronize your phone to iCloud then anybody who has the details for that account, or even has their phone connected to the same account (a family member, for example), could potentially see your personal text messages.
Can two phones receive same text message?
Can two phones receive same text message? Two phones can receive the same text message. This is true for both Android smartphones and iPhones.
Who can see my text messages?
With SMS, messages you send are not end-to-end encrypted. Your cellular provider can see the contents of messages you send and receive. Those messages are stored on your cellular provider’s systems—so, instead of a tech company like Facebook seeing your messages, your cellular provider can see your messages.
How does a text get to another phone?
Cell phones use antennae to transmit and receive radio waves that carry binary information. Every cell tower presides over an area of land, where it receives and transmits radio waves. When a text message is written, it is transmitted as binary code using a particular frequency of radio waves specific to that user.
