WhatsApp for BlackBerry 10 didn't die right when 2018 arrived, but it will4
According to a statement made by WhatsApp, on BlackBerry 10 the app is now in "deprecation" mode." While it will still continue to function for a short time period, some behaviors will change. Let's say that you delete the app on BlackBerry 10, and hope to reinstall it on the platform. Since it can no longer verify your BB10 phone number, which is necessary to finalize the installation process, you can not bring it back once it is deleted. Now, once this two-week grace period ends on or around January 14th, WhatsApp for BlackBerry 10 will go into "expired mode," and the app will no longer connect to WhatsApp's servers. For a period of time, you still might be able to see your existing messages, but there is no guarantee.
Since BlackBerry 10 does run some Android apps, you can install this version of WhatsApp on your BlackBerry 10 handset, add an app like WhatsFixer that allows you to share multimedia content, and you'll be good to go. The latter workaround is good for those who would rather not have to give up their BlackBerry Z30, BlackBerry Passport or BlackBerry Classic. Perhaps the best solution to this issue is to buy the BlackBerry KEYone or the BlackBerry Motion; both of these are powered by Android, and you'll be able to use WhatsApp with no restrictions. Plus, with the KEYone, firing off messages with that fantastic physical keyboard has got to be a pleasure.