Question: how to restore old whatsapp backup on iphone?
Answer: Step 1 Connect your iPhone to the computer and then run Syncios Data Recovery. ... 
Step 2 Scan your iPhone. ... 
Step 3 Preview and recover the lost data. ... 
Step 1 Scan iTunes backup file. ... 
Step 1 Sign in iCloud. ... 
Step 2 Download and recover iCloud Backup File.