15 whatsapp account :
Hey guys you had used OGWhatsapp,ENWhatsapp and WhatsappAD to use multiple accounts at same time on 1 mobile. But after latest update from official whatsapp, OGWhatsapp,ENWhatsapp stopped working cause they also need to update.
Now some developers have made 20+ variants of whatsapp which are having same features. There is no difference between them, but you can install all versions at same time, that means no need to uninstall official whatsapp. just install provided whatsapp as normal whatsapp and confirm your mobile number by sms or call.