Go to App Store. Go to Updates using icon on the bottom. Touch and drag down to update the view. If updates are available, you will see the list that can be updated.
Otherwise, you can also remove Whatsapp and then go to App Store to install. You will get new version.
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Go to App Store. Go to Updates using icon on the bottom. Touch and drag down to update the view. If updates are available, you will see the list that can be updated.
Otherwise, you can also remove Whatsapp and then go to App Store to install. You will get new version.