How to run 2 WhatsApp in iPhone running iOS 8
Using two WhatsApp in iPhone: To use two WhatsApp there are several methods. For Jailbroken device you can use slicing method and for other you can download WhatsApp 2.
You can download Slices from Cydia which is free of cost. After installing you can go to the settings and choose the app you need to clone. As you need WhatsApp you can chose WhatsApp as the clone.
First download Appsync Unified from Cydia then you can install Whatsapp 2 from below link:
Whatsapp 2 Download link - http://ipa.othman.tv/ipa/WhatsApp2.php