1. If the synchronized QQ music is saved locally on the computer, the synchronization also requires an Internet connection to listen, but it consumes less traffic. If after synchronizing QQ music on the computer, there is no local cache, it will become online listening, which consumes more traffic.

2. The synchronization of QQ Music on the computer and mobile phones can be solved by creating a playlist, provided that the QQ Music accounts logged in on the computer and mobile phones are the same account.

3. Will. QQ Music PC version will calculate the time when playing music, but it will not be included in the QQ Music listening count statistics. The number of songs listened to by QQ Music is based on the statistics when users play songs on the QQ Music client or mobile terminal. On the computer version, only the playback time is calculated and the number of plays is not included.

4. No, you can only download the app on your mobile phone to listen. Listening to local music after logging in can also be accelerated. You can turn on QQ Music while sleeping, then turn down the volume to minimum, and then set the phone to automatically shut down after an hour, and just leave it there. This won't have any impact. Hope it's useful to you.