Please help for unlock samsung s5 mini G800F

I dont have any box so my request is for any "software" apk or other sort of "things" that can help me simunlocking the handy Samsung s5 mini G800F
I have search online but dident found anythung that help me next week I will buy it but if realy there is not any way to unlockit than I will save money.
If u know something that will help me details and informations will be wellcome.