How to reinstall Viber with no connection with my previous Viber usage? I used to use Viber on iPhone for a while with one set of Viber credentials.

Now I want to reinstall Viber on the same device "erasing its memory" completely: to use it with completely different identity (phone number, name, chat history) -- in a manner that Viber has no way of knowing that it was previously used with a different number on this device / for this Apple ID etc.

iOS 12.x throughout my Viber usage; currently 12.1.2.

Update (2019-02-07): Here what I tried so far, with no success:


Settings &gt; General &gt; iPhone Storage &gt; Viber &gt; Delete App (per 1)
Privacy &gt; Advertising &gt; Limit Ad Tracking; followed by &gt; Reset Advertising Identifier
AppleID &gt; iCloud &gt; Viber &gt; Off
disabling backups for Viber (per 2)
AppleID &gt; iCloud &gt; Manage Storage &gt; Backups &gt; (my phone) &gt; Delete Backup
rebooting between the above cleanup steps and installing a new copy of Viber
completely signing out of AppleID, which includes removing all AppleID account-connected data including Keychain and disabling access to any backups
starting a newly installed Viber when the phone is in Airplane mode (per 3)
This can be fixed by Deactivating the account. Settings -> Account -> Deactivate account. Then type in your phone number and click deactivate. This will remove all data from the old account and allow you to setup as new.