Hi friends

     This trick verify by. Tipka.ml

    When your friends use last seen hide in whatsapp
So you didn't see her/his last seen.
And someone block you then you not able to see her/his online and last seen.
     So friends let's see your Bf/Gf last seen  when hide last seen
     WhatAlert Premium
WhatAlert gives you an overview and alerts of the activity changes from the selected contacts.
        Online alert
    Profile image change alert
     Profile image log
You will receive a notification as soon as a contact is enabled by you,
comes online on whatsapp.
Profile images will be saved for you to browse trough.
Calendar overview of activity
No adds
Unlimited push/alerts (5m interval)
15 Contacts
50 Images per contact
Unlimited Online/Offline backlog
When someone has set privacy settings so that the last line is not visible to contacts or others,
then whatsapp will not send this data to anyone,
so that includes What alert.
you can use What Alert to find out if someone has blocked you on Whatsapp.
For example, if you get notified with an online status from What alert but you see your contact not online at your own Whatsapp.
        Download app here

      Important Note●◆◆   Download and first time app show crash 
Now click bACK button and out app

Go App menu and open app now it's work

  So friends tell me in comment for this amazing App
You can also contact Me on my whatsapp