Unicom sent me a text message today, saying that my available quota is insufficient, so I will stop using it next time. What's going on here? I called to check the words.

You can log on to China Unicom's online business hall > Query to check the account balance;

Log in to the China Unicom mobile phone business hall APP, and your account balance will be displayed on the home page;

Wechat login binds "China Unicom Micro Hall" > Services > Query Processing to query the account balance.

If your phone bill balance is lower than your package fee, if your phone bill balance is still lower than the package fee after recharging in the current month, your number will be suspended at the beginning of next month.