[Q] I need some help with my Galaxy S5 sm-g900d

hi guys, I need some help

i have galaxy S5 sm-g900d,from china, ( Im in algeria)

im really sick with it, i cant use 3g or google services,

so what can I do ?

is there a custom ROM or an( international/ European / American ) firmware for this model because i searched a lot and couldnt find any ,



PS: I only managed to Root it



I dont know much about all this, so any help would be highly appreciated



-_-

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