I accidentally deleted my whatsapp and never could re install again. it gets stuck on validating cell number... sometimes it freezes my BB and i need to turn off and turn on. I tried already with many Whastapp versions. the official and beta ones... same thing! I'm not sure if it is a problem with my cell number because i put a different cell phone and apparently it finished validating since i received a text saying number wrong".. i searched on internet and didn't find any issue like that!