With the new upgrade and restriction on some mobile devices, this is how Whatsapp intends to cut-off subscribers.
A blog reader sent this in:
Few days ago, Whatsapp announced that the’ll be restricting support to all blackberry, Nokia S40, S60 and older android smartphones. This implies that these phones can’t use whatsapp any longer.
Just this morning i got a push notification to update my whatsapp to the latest version and BOOM, There goes my whatsapp from my blackberry phone.
Anyway, that’s the only way they can stop us from using whatsapp on this devices. So if you still wish to use your whatsappp on you Nokia, Blackberry, Just ignore the push notification to update your whatsapp that way you can still use the app