Why can't mobile phones use MMS?

Firstly, confirm that the mobile phone terminal supports MMS service (refer to the mobile phone manual), and secondly, the mobile phone number needs to be enabled with Internet access function and SMS function (if the Internet access function is not enabled, users cannot send and receive MMS; If the SMS function is not turned on, the user cannot receive MMS); Please confirm the settings related to the mobile phone MMS function, or contact the telecom customer service for help. When the network is normal, you should be able to use MMS normally. 1) If you can't send MMS, you can let users check whether it is normal online to judge whether the network environment is normal at that time. 2) If you can't receive the MMS, you can contact the customer service staff to check whether it is normal to send and receive the MMS. 3) If the user receives the multimedia message, the content display is garbled or the picture display is abnormal, which may be because the user terminal does not support the multimedia message format. You can suggest that users send themselves a picture that is displayed normally on this machine to see if it can be displayed normally after receiving it. For more service benefits, click on "official website" customer service 222 below to answer your questions.