Cheap smartphone with great specs and durability? Try xiaomi or redmi. The cheapest smartphone yet quality. Ps, im not an endorser 
This brand is Cool and cheap but the repair is too expensive , I Got My c3 Redmi broken LCD and when i try to check the repair? it almost cost me more than half of Buying brand new , for me this is not that practical , i will still Buy samsung because the parts is cheaper and can find anywhere in my Place not like this xiaomi and redmi .
Maybe this is just in my Place and i'm not discouraging anyone , i only share my experience .