Watch e card SMS can't be sent out

It may be that the number of the SMS center is set incorrectly or there is no signal or the battery of the mobile phone is low.

Some mobile phones and watches don't support SMS. Edit the short message on the mobile phone, and then directly enter the watch number to send. If you can't receive the text message, it may be that the watch is in arrears, so you can recharge it before using it.

A watch is also an electronic product. Different from mobile phones, the main functions of mobile phones are to make phone calls and send text messages. So the main function of a watch is to make a phone call in time, which is an extra function besides its main function. Texting is definitely not acceptable. Maybe in a few years, with the change of technology, it can send text messages, but now it can't.