Conclusion
The Karbonn K440, with its pricing around 30 EUR at launch, represents a solid choice for users seeking a basic phone with reliable dual SIM functionality. It is particularly targeted towards individuals who need long battery life and the ability to handle essential tasks such as calling, texting, and listening to FM radio. While it may not satisfy the needs of users who require advanced features or mobile internet access, it serves its purpose well as a straightforward, budget-friendly communication tool. The availability in two distinct color options, Black/White and Black/Red, adds a touch of personalization to this otherwise utilitarian device.