My mobile phone number is invalid. Why can I get some short messages sometimes?

When you say void, you haven't paid the fee for a long time. As long as there is arrears, the mobile phone card will generally remain 1 period, and it is not completely invalid.

At this time, your card still has a signal.

, so you can receive information, and receiving information is free.

If your card is inserted and there is no service provider.

China Telecom and China Unicom explained that this card was completely invalid and definitely could not receive information.

After all, your current card is just like a test card.