Mobile phone messages can be received for a while, but not for a while. Many pictures and songs in the memory card cannot be displayed on the mobile phone. What is the reason?

Let's just say that your mobile phone really sucks. . . How can there be so many problems at the same time? It must be the constant advertisements on domestic TV. Ha ha. The text message is not smooth. First, the network is blocked. Second, the number of the SMS center may be wrong (see if you are using a local SMS center, just refer to other people's mobile phones). Third, there is something wrong with the mobile phone itself. You didn't hide them, did you? The phone can't display hidden content, or the memory card is damaged.