Follow These Below Steps -
1- Firstly Check If Your Friend's Profile
Picture or Last Seen or Whatsapp Status Are
Visible To You or Not, And If Not Then You
Are Blocked
2- First Open Your Whatsapp Messenger
3- Goto Settings Then Click On Account
4- Now Click On Delete My Account
5- Enter Your Mobile Number And Delete
Your Account
6- Now Uninstall Whatsapp From Your Mobile
7- Restart Your Mobile
8- Fill Your Mobile Number And Other
Details
9- Now You Are Unblocked From Your
Friend's Whatsapp Account Its All May You
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