Apple has provided end-to-end encrypted messaging on its devices since the launch of iMessage in 2011.
Since iMessage is an internet messaging service, it requires an internet connection to work. By default, when the internet signal is weak or unavailable, the iPhone will automatically convert the user's message to SMS format, because SMS uses an older protocol, which can work on mobile signals instead of the internet.
Apple said this happens when iMessage is not available on the recipient's device or a message in a form that cannot be sent over the internet. Since SMS messages are uncked and can be attacked, it is not an ideal form of communication, especially when emphasizing user privacy. In addition, sending SMS messages can cost users telecommunications services, which are not as free as the services provided by Apple.
To ensure that the secondments only send iMessage in compatible conversations, users can control it with an option in your Settings:
This setting can only be found on the iPhone because it is a SMS communication control device. With this setting turned off, users still have the option to use a backup SMS when iMessage cannot be sent, just press and hold the message to select.
When texting anyone without iMessage, such as Android users, the iPhone will always use SMS. This conversion does not affect the user's ability to send or receive SMS messages, but only prevents iMessage from moving to SMS when it cannot send messages via the internet.
Safe messaging has become the focus of many messaging services thanks to the tense political atmosphere in the US, promoting the prevention of privacy violations by technology companies. If the message is end-to-end encrypted, no one has access except for the user.
Facebook, Metas messaging service, has even used iMessages SMS backup messaging feature as a marketing view.
