What is the impact of Unicom's mobile phone card being useless for a long time?

If your number is not used for a long time, you will be in arrears and will be shut down. If the arrears of downtime exceed 3 months, the number will be recovered by Unicom, and the fees owed will also need to be paid at the counter of the business hall to which the number belongs. If you don't make friends, you will become a blacklisted user of Unicom, and you can't check the points and handle other Unicom services by yourself.