How do you know his cell phone is on if you don't call him?

Users can know whether to turn on the phone or not by texting without making a phone call.

1. First, enter the SMS settings and set the sending report.

2. Then send a text message to the other party's mobile phone. If the mobile phone receives the delivery report immediately, it proves that the other party is turned on. If the delivery report cannot be received normally, it proves that the other party is turned off.

3. When the other party receives a text message after booting, it will also receive a delivery report to let you know that the other party is booting.