I'm 54 and I always take mine with me. Of course I rarely use it and can never get a signal when I do need it. Then again, maybe i should leave it home. First time I brought it, after checking with the shuttle driver on availability of a good signal at the pick up point, I learned that you can run down your battery in just day if the phone is on as it keeps looking for a signal. I now take the battery out until I need it.