Don't charge your phone under a pillow: dangerous smartphone habits explained

As smartphones become an everyday necessity, many users grow careless about proper handling. Onlíner has updated its guide on what not to do with your device, highlighting common mistakes that can lead to damage or even danger.

One of the most frequent errors is leaving a smartphone charging overnight under a blanket or pillow. While modern phones and chargers include built-in protection mechanisms, these only work when the equipment is fully intact. A frayed cable or a barely visible exposed wire can cause an electric shock if the user pulls the device in their sleep. Worse, it can lead to a fire. Since contemporary phones charge quickly, keeping them plugged in for more than six hours is unnecessary and risky.

Another hazardous habit is mounting a smartphone on a car dashboard under direct sunlight during hot weather. Overheating accelerates battery degradation and can cause the battery to swell. Many owners have reported cases where the battery suddenly bulges — a clear sign that it needs immediate replacement.

Water damage is another common issue. Users often assume their phone is fully waterproof based on its IP rating. However, manufacturers guarantee protection only for fresh water under specific conditions. Contact with seawater, juice, or other liquids can degrade the seals over time, allowing moisture to seep inside. If a phone gets wet, the first step is to power it off immediately and take it to a service center.

The article also includes survey results comparing reader habits from several years ago to current trends, showing how attitudes toward smartphone care have evolved.