Which type of damage is not covered under warranty?

Casing damage is typically considered cosmetic and does not affect the core functionality of the device. Warranty coverage generally extends to defects in materials and workmanship, which means that any issues affecting the performance of the device are usually addressed. However, damages like hairline cracks or screen burns indicate physical damage that often arises from user mishandling, impact, or other external factors, leading to them being excluded from warranty coverage. Electrical failures generally fall under warranty as they relate to component malfunction rather than damage due to user actions. Casing damage, on the other hand, is seen as normal wear and tear and is not typically included in warranty claims, as it does not impact the operability of the device.