Yesterday, my colleague received a short message on my mobile phone, "Welcome to Shandong Mobile Wireless City, password * * * * *, valid for five minutes, Shandong.

Look at the number. If it is 10086, you can consult it. If you don't know the number, it's probably fraud. Don't turn off your phone. It may know your mobile phone information. If you turn it off, it will cheat your family and you can't call back, because it may also be a high-priced service. I hope my answer is helpful to you.