What service do you use to receive text messages and calls even when the phone is turned off?

You can receive text messages when the phone is turned off when it is turned on. There is no specific service. If you don't want to miss a call, you can use the "SMS Call" service.

The SMS calling service means that when you turn off your phone or are out of the service area, all your incoming call information will be automatically recorded. When you turn on your phone, the incoming call information will be sent to your mobile phone in the form of text messages.

However, it is worth noting that after activating this service, the system will automatically set up shutdown and unreachable call forwarding for you. If you set up the call forwarding function yourself to transfer to other numbers, the SMS call function will be invalid.

It only costs about one yuan a month