Preventing the cellphone battery from draining quickly is just one of the reasons. - Go to your phone's settings, tap "Google," look for "All services" under Google services and tap it, find "Devices," tap it, and turn off "Scan for nearby devices." - This is just one of the reasons why a mobile phone's battery drains quickly. This is merely a suggestion; it is up to you whether or not to follow it. "Scan for Nearby Devices" is a feature on mobile phones—particularly on Android—where your phone continuously scans its surroundings using Bluetooth and Wi-Fi to locate and quickly connect to other devices such as wireless earphones, smartwatches, TVs, or other mobile phones. Impact on Cellphone Battery Increased Battery Drain: Because Bluetooth and Wi-Fi antennas continuously search and scan in the background (even when the Bluetooth icon itself is turned off), they consume extra power. Phone Heats Up: Continuous background activity...