First time I see that model of Huawei, totally unknown, I would tell you to try doing a Hard Reset but you said it is new so it would not serve much. I can give you some advice and it is that with those problems that you raise the best band, first: do not ever buy a mobile that brings a version of Android other than the recent or at least the previous, ie go Android 7.0 (well Beta of 8 is available) do not buy a mobile below the 6.0 for an example or when you leave the 8 do not buy anything below Nougat, because you have a mobile with Lollipop which is a version of Android very old and had A lot of problems in its time. Those mistakes that you say are not normal, I would sell it and buy a mobile more or less economic like a low-end Motorola or pulling on average or if you want to shoot China, better then that will appear a Xiaomi, Meizu, etc. Luck