Subir Biswas

Smartwatch heart rate tracking is not always accurate — especially during workouts. Many users notice incorrect readings such as sudden spikes, delays, or unrealistically low values. This happens because smartwatches use optical sensors and software algorithms to estimate heart rate, not measure it directly.

HTC’s story is one of the most instructive case studies in modern consumer electronics. From building devices behind the scenes to launching the world’s first Android smartphone, HTC briefly stood at the centre of the global mobile revolution. Yet within a decade, it fell from a top‑three global smartphone vendor to a niche player—ultimately selling much of its smartphone talent to Google in a landmark $1.1 billion deal.

our next phone, earbuds, watch and laptop will think locally. Here’s how on-device AI boosts privacy, speed and battery—plus what it means for rail & autos.