Performance
Under the hood, the HTC One M9s is powered by a Mediatek MT6795 Helio X10 chipset, featuring an octa-core 2.2 GHz Cortex-A53 CPU and a PowerVR G6200 GPU. While not cutting-edge by today's standards, this combination offered reliable performance for multitasking, gaming, and media playback at the time. Running Android 5.1 Lollipop with HTC’s Sense UI 7, the phone provided a smooth and customizable user interface, although it may feel outdated to modern users accustomed to newer Android iterations. The device comes with 2GB RAM and 16GB of internal storage, expandable via a dedicated microSDXC card slot, providing flexibility for storing apps and media.