Tips: Your account balance is less than 10.00 yuan, please recharge it in time.

According to your description, yours should be Unicom's annual wireless network card, which belongs to the prepaid package. There is no free text message, so if you send a text message, you will be charged at 0. 1 yuan/article. If the balance is less than 10 yuan, you will be prompted, but if the balance is not zero, you will not stop. Your network card is guaranteed for one year, and it will not stop when the traffic runs out or expires.