End-to-end RCS encryption with iPhone users is still months away
For Android users communicating with iPhone users (and vice versa), recent updates with the release of iOS 18 have significantly enhanced chat security. Although Apple has now introduced support for RCS, it does so exclusively utilizing the upstream provisions. In comparison to Google Messages, which encompasses additional features beyond the standard RCS Universal Profile, Apple's offering remains relatively basic. While the GSMA is making strides toward an encryption system for the Universal Profile, a final solution appears to be several months away, with no specific timeline disclosed.
In early December, reports surfaced indicating that the Chinese hacking group Salt Typhoon had compromised over a million devices, leading the FBI to advise both Android and iPhone users to avoid texting across unsecured platforms.
Which platforms provide end-to-end encryption?
Although RCS chats are encrypted during transmission between Android and iOS devices, the data is decrypted upon reaching the carrier's network, which is where the data breach occurs. In light of this, it may be advisable to heed the FBI's recommendation and select a fully encrypted messaging platform in the interim. Such platforms are accessible across major operating systems, including desktop, and offer true encryption for all content.
If this option does not meet your preferences, WhatsApp is a widely adopted alternative, particularly outside the United States. Telegram is also available; however, its end-to-end encryption is not comprehensive, as both staff members and government authorities can access user messages. Nonetheless, Telegram has shown a commitment to disclosing data only if a court order substantiates the likelihood of terror-related threats.