How do I recover my WhatsApp messages when the phone is lost? I lost my phone with some  unopened  important document in my WhatsApp account, and I can't get the  same  number because  I'm currently  out  of  the country where I can replace my line. So, how  do I recover  my  messages in such case?
Unfortunately it's not possible without using same number because Whatsapp runs only on mobile. 

Whatsapp doesn't have any email id or login functionality. 

Update : 8th Jan 2016.

Now Whatsapp added backup functionality using Google Drive. So you can also take your chat backup if you lost your mobile.



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