See MMS, need, what's the matter?

Let's put it this way: MMS is sent to you through the server of the mobile operator. If you don't receive the information immediately, it will be temporarily stored in the mobile operator's server, but how long it will be stored is up to you and the server. The validity period in MMS settings is, beyond this validity period, you can't get this information any more. (It is recommended to set the validity period to the longest) If the network is clear, you can get MMS immediately without downloading. There is no charge for downloading MMS.