I need help with my cellphone, I bought it on November 2018 in Black Friday in a Colombian store (as I reside in Colombia) and all seemed to be cool with it, until like 2 months ago, when I started to have problems with the camera, as when I use my cellphone's camera app it doesn't take pictures with flash, nor am I able to use the 4K mode, because I am only able to take pictures with 3 megapixels. Also the gallery app doesn't work, when I try to use it, it automatically crashes, and when I retry, it also crashes again. Does anyone know how to solve this? If I needed to format it, do you also know any way to do a back-up of all my files? Thanks!
