Well, I think I know what you are talking about. My grand daughter has an Iphone thingy and I heard her babbling about "jailbreaking it", and as a result of what she did, it is working much better, and battery life has significantly improved.
It contains a new "programmable feature" that I like. She got a call from her husband the other day. "It showed his caller ID, and it lasted just long enough for her to see who it was, and then the phone went into the "reboot mode" and hung up on him. Great feature to have when the wife calls!