my iPhone 7 my coverage has expired I can't receive call or message so what can i do?

Phone service and message service are handled by your carrier.

I suggest that you contact your carrier to ask them run a check on things. It's possible that your phone might need an update, which can be downloaded in a few minutes.

Not sure who your carrier might be? You probably pay them every month for cell service.

Settings > General > About > Network

akpa ~ Your iPhone 7 may not be able to receive calls or messages due to a weak battery. Does your iPhone 7 still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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