Smartphone maintenance and screen troubleshooting guide

Maintaining smartphone health involves both proper cleaning techniques and understanding screen defects. To clean a device safely, users should avoid harsh chemicals like bleach, peroxide, or household cleaners, as these can permanently damage the oleophobic coating on the screen. The recommended method is to use a non-linting microfiber cloth slightly dampened with soapy water or 70% isopropyl alcohol. Liquids should never be applied directly to the device; instead, they should be applied to the cloth. It is also important to avoid moisture in ports like USB-C.

Regarding screen issues, it is essential to distinguish between a stuck pixel and a dead pixel. A stuck pixel remains lit in a specific color (such as red, green, or blue) and can often be repaired through troubleshooting. In contrast, a dead pixel remains permanently black and cannot be recovered, typically requiring a screen replacement. Before assuming hardware failure, users should check cables, sources, and clean the screen surface to rule out external factors.