For the computer illiterate out there, please don't go downloading malware posing as bittorrent clients.
Please don't use it to grab anything pirated unless you know what a VPN is and know which ones are trustworthy.
I'm on Linux, if you want a good multiplatform client, qBittorrent works well. (coincidentally it starts with a Q)
https://www.qbittorrent.org/download.php
For VPN's, please checkout Techlore's channel.
https://www.youtube.com/playlist?list=PL3KeV6Ui_4CYTOvbZrElePOSJZAUlx2Yr
https://www.youtube.com/playlist?list=PL3KeV6Ui_4CaIhE8k4-plxS1-H9Cy3Qng
Woah, don't torrent with phone. It will drain your battery and the file will probably exceed your phones capacity. Plus apps on the app store are pretty much all spyware.