Why can't I open the MMS after receiving it?

The received MMS cannot be opened for the following reasons: 1. The information format of sending and receiving MMS should not only be supported by MMS center, but also by mobile phone terminal. 2. At present, MMS Center supports the following information formats: text formats including Unicode characters and Chinese characters, audio media in AMR, MP3, SP-MIDI, AAC and QCELP formats, and files in GIF87, GIF89a, Jpeg and WBMP formats, including video clips of H.263 and MPEG4-4. I can't open the received MMS. It may be that the mobile phone terminal does not support the attachment format of this multimedia message. It is recommended to change the machine for testing. What format file types can a mobile phone support? It is recommended to consult the mobile phone manual or log on to the relevant mobile phone website to find out. 4. At present, the attachment size of MMS sent by China Unicom MMS service is within 100K, which can be used normally. (The above content is only applicable to Guangdong Unicom users)