The first Mobistel Cynus E1 I returned, then on and off at the screen and was no longer allowed to turn, although the cell phone was still on. To solve the problem was then, what has always been only one removing the battery, of course, angry.
In the second E1, the problem has not yet occurred, but I have the recommended software update is not installed, because the first time the problem occurred afterwards.
My conclusion: It works, is fast enough for me (Facebook, Whatsapp and a few minor Apps enough for me) and is small. Since I'm not a handbag type, even a smart phone in the (riding) must in my pocket watch, which severely limits the choice and I am glad that I have the Mobistel Cynus tried E1!