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As of now I have a non-existent phone number on WhatsApp. My tablet has been running really slow lately so I decided to factory reset it. I backed everything up with titanium backup and also backed up WhatsApp chats to Google drive. I really don't want to create a new WhatsApp account because I'll have to notify all my contacts etc. but as I don't have the phone number that I originally obtained my WhatsApp number anymore I wanted to know if there is a way to restore my WhatsApp account either from the drive backup or titanium backup? (Sorry for the illegibility I've been working on this problem the whole day)

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You should be able to restore your account using titanium backup if you have app+data backup of whatsapp taken using titanium backup.

However, there can be cases of app crash, if the backup is corrupted, android version of your device upgraded/changed. Also there can be a scenario in recent/latest version of whatsapp where it would detect this dirty restore and ask you to authenticate the number again. If this happens try using a bit older version of whatsapp(you can download it here) as I recall I was able restore whatsapp account using titanium backup a couple of years back.

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  • Thanks! Which version would you recommend?
    – Maslin
    Mar 20, 2018 at 19:40
  • You may start with the version that you backed up using titanium(I am assuming you have backed up the whatsapp apk as well).
    – kernal42
    Mar 20, 2018 at 19:43

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