As announced on WhatsApp official blog, WhatsApp will no longer be supported on BlackBerry Z10 after December 31, 2017. Only WhatsApp supported BlackBerry 10 device that has Software Release 10.0.10.82 or later, otherwise known as BB OS Version 10.0.10 mentioned on WhatsApp website. Some users have to face problem like installing whatsapp application on Blackberry Z10. Mobile shows error while we try to install app. However here is a simple trick to intall WhatsApp on BB10 devices. download and install these 3 apps on your Blackberry device Download Link.
Here is a video tutorial that shows complete instructions to run whatsapp on Blackberry on z10 mobile.
Video Source : RoH TeChZ