nokia x2 01 in whatsapp Could not connect to server: certificate was issued by an unrecognized entity

Question

I have nokia x2 01. my whatsapp was continuously hanging so i deleted whatsapp & reinstall it. but now i am getting error of Could not connect to server: certificate was issued by an unrecognized entity.

i reinstalled it again and again but no effect.

please help.

Answer 1

is your phone firmware up to date. I once encountered a similar problem with an Asha 306 and after using nokia firmware/software updater the whatsapp installed well

Answer 2

I don't know. How to check it?