220 frames per second from the phone

Mylenium miss spoke. 

File interpretation (File>Interpret Footage>Main) is where you set the playback rate of the footage. If the original was shot at 220 fps and you interpret it at 220fps then 1-second of realtime will take 1 second of screen time. If you want to slow down the 220 fps footage so that 1 second of realtime takes 10 seconds of screen time so you have slow motion, then interpret the footage at 22 fps. If you want other ratios then do the math. If you do not want to repeat frames or blend frames, then make the interpreted frame rate match the comp frame rate. When you force a video file to a different frame rate you change the time it takes that video file to playback. 

The time a video file takes to playback does not depend on the frame rate of the comp at all. A 30-second clip at 60 fps will be 30 seconds in a comp with the frame rate set to 10fps, or 30fps, or 300fps. The only difference is how many frames will be blended or interpreted in each frame of the comp. This works in ALL video apps that let you set the framerate of the footage. Premiere Pro, Davinci, Fusion, Inferno, all of them. That's how video works.

Set your composition framerate accordingly to 60 FPS, set the footage interpretation to the original 220 FPS. AE will take care of the rest.

Mylenium