Support for older operating systems

The following platforms are no longer supported as of the beginning of 2017:

Android versions older than 2.3.3
Windows Phone 7
iPhone 3GS/iOS 6
You won't be able to use WhatsApp on the following platforms for:

Nokia Symbian S60 after June 30, 2017
BlackBerry OS and BlackBerry 10 after December 31, 2017
Windows Phone 8.0 and older after December 31, 2017
Nokia S40 after December 31, 2018
Android versions 2.3.7 and older after February 1, 2020
Note: Because we will no longer actively develop for these platforms, some features may stop functioning at any time.

These platforms don't offer the kind of capabilities we need to expand our app's features in the future. If you use one of these affected mobile devices, we recommend upgrading to a newer OS version, or to a newer Android running OS 4.0+, iPhone running iOS 7+, or Windows Phone 8.1+ so that you can continue using WhatsApp.

Once you have one of these devices, simply install WhatsApp and verify your phone number on the new device. Keep in mind that WhatsApp can only be activated with one phone number on one device at a time.

There is currently no option to transfer your chat history between platforms. However, we provide the option to send your chat history attached to an email. Learn how to export your chat history on: Android | iPhone | Windows Phone | Nokia S40 | BlackBerry | Nokia S60 | BlackBerry 10

Cheers,
WhatsApp Support Team

Thank God I never sell my Q10 as I no get money to buy another one

Just go to BlackBerry World and update to the latest version