If you get ‘Error Installing application’ while downloading WhatsApp for Z10, Well, you’re not the only one. Some users around the globe complaining that they can’t install WhatsApp on their Z10 devices. However, I have no issue installed it this morning.
We’re sure that WhatsApp already have the news and working around the clock to fix it. Meantime, you may want to try restart your device ;
1. Press power button for 5 seconds
2. A screen countdown will appear
3. Press restart below
4. Try download again from BlackBerry World
If this not work, make sure your os minimum is 10.0.10.82 How To Check/Update
Please also check BlackBerry Knowledge base : http://www.blackberry.com/btsc/KB33937
Tell us if this helps!. Let’s us know your result!