You Will Not Find Any Whatsapp Versions Work With Samsung Wave Y GT-S5380 Because this phone carrying Bada OS ( Not Supported From Whatsapp )
Reply from whatsapp developers:
Sorry. We do not support Bada OS phones at this time. We are considering Bada for 2011 but have not made a decision. Thank you for feedback on this matter as it helps us make the decision.
Try to Download Whatsapp For Other Phones :
WhatsApp Messenger is a smartphone messenger available for Windows Phone, Android, BlackBerry, iPhone, and Nokia phones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. Switch from SMS to WhatsApp to send and receive messages, pictures, audio notes, and video messages. First year FREE! ($0.99/year after)