How i start whatsapp on my lava 135? Answered!

— This is a feature phone which means it's using a proprietary operating system ....

— This is a feature phone. It does not have a compatible operating system...

— This phone does not allow application installation because it's using...

— The interface of the phone may look like an Android phone but it isn't. It's...

— In order to unlock and change the password of your Lava Discover 135 device,...

— Since the phone does have Google services available but not Google Play Store,...

How i start whatsapp on my lava 135?