Lightweight and a small footprint, mini S4 perfectly meets my needs which are limited to the use of the main applications. I was very worried at first with the autonomy of the S4 mini that I was weak. I found many blog on this topic because it is a problem shared by a large number of users. The solution, turn off and on the S4 mini after each recharge and autonomy increased to two days or more depending on the use. Once solved the problem of autonomy, I am very satisfied with my purchase.