User level: Level 1 (0 points)Iphone 18 Pro Max issues. Can't get on internet when off WIFI. Can't send SMS messages even when on wifi. Keep getting SOS when off wifi. What's going on?
Posted on Sep 30, 2026 6:16 AM
User level: Level 9 (74,110 points)Sep 30, 2026 7:32 AM in response to Topplanner
Hi there
Please try this
Toggle Airplane Mode: Turn on Airplane Mode, wait 15 seconds, and turn it off. This forces your phone to search for a fresh cell tower connection.
Restart Your iPhone: Turn your phone completely off and back on.
Check Your eSIM or SIM Card: If you use a physical SIM card, eject it with a paperclip or SIM tool, check for dust, and push it back in. If you use an eSIM, go to Settings > Cellular and toggle your mobile line off and back on.
Check for Carrier Updates: Connect to Wi-Fi and go to Settings > General > About. Wait for 15 seconds to see if a carrier settings update pop-up appears.
Reset Network Settings: Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. (Note: This erases saved Wi-Fi passwords, so you will need to log back into your Wi-Fi network)
Originally posted at discussions.apple.com/thread/256367814