Why didn’t I receive a text message reminder when I redeemed a 100 yuan phone card?

Maybe the balance before you recharge the phone bill is less than -100. If it doesn't work, go to the place where you recharged the phone bill and ask, or call the 10086 manned desk to ask what's going on. The service is very good. It's often my little sister who answers the phone. She has a nice voice and is very polite. Most of the problems can be solved. I hope you can find out the reason soon~