How to Fix "Phone Number Cannot Be Used for iMessage & FaceTime

Title How to Fix "Phone Number Cannot Be Used for iMessage & FaceTime" (2026 Guide) Description Are you seeing the "This phone number cannot be used by iMessage and FaceTime" error on your iPhone 17? In January 2026, with the release of iOS 26.2, a new "SIM Handshake" bug has been causing activation errors, especially for users with dual-SIM or eSIM setups. Whether your number is grayed out, stuck on "Waiting for Activation," or unexpectedly sending texts from your email, this updated tutorial covers the "Inactive SIM Flush," the "Apple Account Sign-Out" trick, and how to fix the 2026 "RCS-iMessage Loop" glitch. In this video, we cover: The Inactive SIM Conflict: A common iOS 26 bug—how to go to Settings Cellular and delete or remove any inactive eSIMs or physical SIMs that share the same number as your active line. The "Send & Receive" Refresh: How to navigate to Settings - Apps Messages - Send & Receive, uncheck your email, and re-force the checkmark onto your phone number. The Media & Purchases Sign-Out: Why your Apple Account (formerly Apple ID) might be blocking the number—how to sign out of your account, restart your iPhone 17, and sign back in to reset the secure tokens. The "Airplane Mode" Jumpstart: An updated 2026 method to force your carrier to re-send the hidden activation SMS needed to link your number with Apple’s servers. Checking Date & Time Sync: Why having "Set Automatically" turned off in Settings - General - Date & Time can cause a security certificate mismatch that blocks FaceTime activation. Carrier Settings Update: How to check for a January 2026 carrier update that resolves the latest 5G/RCS compatibility issues with iMessage. The 24-Hour Rule: Why Apple’s servers sometimes put a "Cool Down" on your number if you've toggled the switch too many times, and how to wait it out effectively.