Without calling or texting, can I know whether the other party is turned off or on?

Sure！ You put a tick in front of the information report in SMS Settings-Status Settings! If the other party turns on the phone, a short message will be sent to your mobile phone, reporting that the other party has received the short message. If the other party is not turned on or not in the service area, no information will be reported until the other party is turned on or not in the service area!