1. Android system; restricted by software, such as 360, etc., can be set to unlock, and the data of the software itself is missing.

2. APP system; if it is not downloaded from the App Store, it should be downloaded from some other software markets, because sometimes the software data in these software markets is lost, and the downloaded version is just an empty shell.

3. In the jailbroken APP system, you often encounter problems that the software cannot be used. Find the place where you bought the phone and ask them to help you deal with it (sometimes the jailbreak is not successful, resulting in restrictions on the use of most software)

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4. The phone has insufficient memory and too much cache, causing the phone to freeze and not be able to play. You can close the QQ Music process and clear the cache. You can see it on QQ WeChat, Weibo, Mobile Butler, etc. Software can also be removed.

5. The network status is not good, please reconnect to WIFI.

6. There is an error in the QQ Music system. Please close the QQ Music process first and then reopen it. If that doesn't work, delete QQ Music and download it again.