The phone is very small, which caused problems for me at times because I have large hands.
The display screen is smaller than I would like it to be.
The keypad lock feature malfunctions at times.
This is a good phone for a person who just wants a basic phone to place and receive calls.
The size of the phone can cause a problem to those who have large fingers or hands.
Despite its small size, this phone is very durable.
Be careful about assuming the C139 is durable; I had mine for less than a year and never dropped it or anything, and one day it just reset itself and lost all my info. I had to get a new one of the same model, but I kept it just long enough to get a new phone.
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