Yes I did and it was a mixed experience.
It was the time when I started working and I had a commute of minimum 45 min one way; I had to fix few things or check some things in the code and using a phone was one of good ways to utilize the commute time.
It was mostly centred to JavaScript, so was an experience. If would have to do it again, I would rather wait for computer to be available; though I still read some code here and there on my phone.