Can I limit the amount of space itunes match uses on my iphone? I have an iPhone running ios 6.1.2. I use match frequently, and I notice that from time to time it will completely fill up the space on my iphone. This tends to cause the phone to run very slowly until I delete some items off of the phone. I would like to limit the space of match on my phone so that it will never fill it up. Is this possible?
This is not possible. iTunes Match will continue to fill up your storage space as you download tracks locally on the phone through it. I believe it will trim songs once the space is full, to clear off the least-played material.

If you would like, you can manage your storage in a few ways:


Go to Settings > General > Usage > Music. Here you can clear all downloaded music.
Go to the Music app. Locate downloaded material and swipe across artists, albums or songs to remove them from your local storage.