I only receive messages sent by other iPhones when I am on wifi. I have a data plan, and have Cellular Data turned on, but messages still wait until I have wifi before being delivered. Traditional text messages work as expected.
What gives?
iPhone 8, iOS 16
Go to Settings/General/About and wait for 30 seconds (for a carrier update). If nothing happens and you aren’t prompted to install a carrier update go to plan B:
Open Settings
This will erase all Wi-Fi passwords, but will not result in any other data loss.
Go to Settings/General/About and wait for 30 seconds (for a carrier update). If nothing happens and you aren’t prompted to install a carrier update go to plan B:
Open Settings
This will erase all Wi-Fi passwords, but will not result in any other data loss.
Are you using VPN? That can interfere with some services over cellular data.
No VPN. However on further investigation I've found that all cellular data has stopped working while Messages has stopped receiving iPhone messages. Attempting to use Safari or toggle Cellular data off/back_on generates a message: "Could not activate cellular data network."
Powering off and restarting the iPhone resolves the error for about a week, after which Messages/Safari/etc stop reliable working and require rebooting the phone, again.
Messages not received on celular, only wifi
