The study examined the various effects of WhatsApp usage on Pakistani youths’ (Hedonic and Eudaimonic) wellbeing. The survey included 300 participants, male and female of Islamabad with snowball sampling technique within the age bracket of 15-29 years, which belongs to different socio-economic status and age groups, formed the population of this research. The study found that more women than men use the WhatsApp platform. Participants who have better economic condition use more WhatsApp. Those who are older in age use more WhatsApp than others. The unique element of this study was that 51.7% of Islamabad’s youth feel stressed which triggers them to use WhatsApp for sharing their stress, depression, and feelings with others. Through the SWLS model, we concluded that Islamabad's Youth felt very happy and satisfied with their life and their physiological (Hedonic & Eudaimonic) well-being was affected by WhatsApp usage. Youth feels happy, satisfied, and socially connected by using WhatsApp.