i need to buy a phone for my dad, who is using a lenovo p780 4gb rom version, but the storage is full now and he cannot update his app in his device. so i decided to trade in the p780 and buy him a new phone to use. so, here is my demand:

1. Brand. (any)
2. Budget. (better below 1k)
3. Specs. (ram at least 1gb of course/rom at least 8gb with sd card slot, or above 16gb rom with no sd card slot/at least quad core/around 5" screen)
4. What you need in the phone (decent camera/big capacity battery[3-4k mah]/dual sim)

thanks in advance.

i'm thinking of either s860 or honor 3x