How Do You Extend Your Phone Battery Life Without Replacing the Battery?

[Bob69]

Can you answer this question please. How Do You Extend Your Phone Battery Life Without Replacing the Battery?
I've had android and apple phones before. Currently a Samsung.

[Odd Maverick]

Phone battery performance degrades over time as the chemistry of the lithium-ion cell changes with charge cycles. A battery that held a day's charge when new may hold six hours after two or three years of heavy use. But before replacing the battery, which is the correct long-term solution for a phone you want to keep, there are settings and habits that can meaningfully extend what you get from a degraded battery and from a new one.

The settings that matter most are screen brightness, background app refresh, location services and connectivity. Screen brightness is the largest single drain on most phones, with automatic brightness adapting to ambient light rather than staying at maximum being significantly more power-efficient than manual maximum brightness. Background app refresh allows apps to update their content when you are not actively using them, which consumes both battery and data. Disabling it for apps that do not need to be current when you open them, news apps, email clients and social media can wait thirty seconds for their feed to load, reduces background drain substantially.

Location services running continuously for apps that do not need constant location data is a significant battery drain that most users do not realise is happening. Setting location access to while using app rather than always for apps that do not have a legitimate reason for continuous location tracking, navigation, safety apps and some weather apps do, reduces this drain.

Connectivity settings matter less than they used to because modern chips handle cellular and Bluetooth more efficiently, but disabling Wi-Fi when you are in a location with no known networks, and turning on Airplane mode rather than maintaining a cellular search in areas with very poor signal, extends battery in those specific circumstances.

Battery health checks are available in Settings on both iOS and Android and show the current maximum capacity relative to when the battery was new. Below 80 percent is the threshold Apple uses to flag battery replacement. Below 70 percent typically produces noticeable enough degradation to affect daily usability.

[BankHolidayBlues]

Screen brightness management is the most immediate intervention and the one with the highest impact-to-effort ratio. Auto-brightness is not always well-calibrated but it is better than maximum brightness in most indoor conditions