A: When it can be used normally, it is the use period, during which all functions are normal.
When the balance is insufficient, it will be stopped, which is called unpaid stop.
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When the account has a balance but the validity period of the balance has arrived, it will enter the recharge period, during which the number can not actively use the data service (call that is to send short messages, color information, or Internet and other functions). However, these functions can be used passively (called, receiving SMS or color messages).
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If there is no recharge during the recharge period, it will enter the retention period, during which the corresponding fee will be deducted every day to retain the number, and when the phone bill is completely deducted, the number will be cancelled, which is the so-called cancellation.
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The number is recalled by the operator's system and returned to the market after a recovery cycle, usually less than three to five years.