QQ music installation package 76M；;

Cool dog music installation package 74.6 m;

Therefore, there is little difference in the system memory occupied after the software installation is completed.

If you need to download music to your mobile phone, you need to judge it according to the quality of the downloaded songs, and you can't give an accurate answer. Specific reference standards are as follows:

If you download mp3 format with ordinary sound quality, the memory occupation is small;

If you need to download songs with HQ sound quality or SQ sound quality, it will take up a lot of space, and the specific arrangement is MP3.