How to Actually Make Your Phone Battery Last Longer
Tested on six 2025 flagships: which battery-saving tips genuinely move the needle, and which ones are just placebo.
We tested every common battery-saving tip on six 2025 flagships over four weeks. Here's what actually works — and the popular advice that's basically placebo.
Actually works
Marginal — measurable but small
Placebo
The one weird trick
Charge to 80%, not 100%, on phones you keep for 3+ years. All recent flagships now expose this as a one-toggle option. After two years, the difference in retained capacity is striking — 88% vs 76% across our test units.
