Smartphone battery health and optimization tips for Android and iPhone

A degraded battery can cause a smartphone to run slower. iPhone devices reduce performance when battery health falls below about 80 % to protect the hardware, and users can check the battery’s maximum capacity in Settings → Battery → Battery Health.

Xiaomi phones hide a developer menu that lets users improve endurance instantly. By tapping the MIUI or system version seven times, the menu appears, where options such as lowering the animation scale to 0.5×, disabling background sync, enabling early‑battery‑saver mode (at 25‑30 % instead of the default 15 %), and changing location permissions from “always” to “while using the app” all reduce power draw.

Google Maps is another common drain because it constantly accesses GPS, Wi‑Fi and mobile data. Switching the app’s location permission to “while using the app” and turning off background data cut its consumption dramatically.

General phone‑speed and battery‑saving advice includes keeping at least 15‑20 % of storage free, deleting unused apps, clearing large caches, disabling RAM expansion and visual effects, lowering screen brightness or using dark mode on OLED displays, activating power‑saving mode early, and enabling airplane mode when signal is weak. These steps help extend battery life during long trips or everyday use.