The OPPO A77s Dual SIM Starry Black 4G smartphone is a technological marvel that combines top-of-the-line features with a sleek, stylish design. The model comes in a mesmerizing starry black color, which gives it a classic look and feel. 

The OPPO A77s is powered by an impressive 8GB RAM, which provides lightning-fast performance, allowing you to multitask with ease and run heavy applications without any lag. It features a generous 128GB internal storage capacity, offering you ample space to store all your photos, videos, apps, and files.

The phone supports 4G connectivity, meaning you can enjoy super-fast internet browsing, streaming, and downloading. With its dual SIM feature, you can manage your personal and professional contacts simultaneously without needing two different devices. 

The OPPO A77s comes with an international version, ensuring that it can be used anywhere in the world. It's compatible with a wide range of network providers, making it a perfect choice for those who travel frequently or live in different regions of the world.

The device also features a robust, long-lasting battery, ensuring that you never miss out on any important calls or messages due to low battery. The smartphone also supports fast charging, helping you to power up your device in no time.