Detailed answer

Hyperpigmentation is typically caused by an overproduction of melanin, the pigment that gives color to the skin. While constant use of mobile phones may contribute to skin issues like acne or redness due to the bacteria and heat emitted from the device, there is no direct evidence linking mobile phone use to hyperpigmentation. However, excessive exposure to the sun's UV rays without proper protection can lead to hyperpigmentation. It is important to wear sunscreen and take regular breaks from the screen to protect your skin.