Self HelpBoise Computer Care

Phones

Phone battery draining fast

Phone battery draining fast? Find the culprit app, use battery saver settings, check battery health on iPhone and Android, and know when to replace.

Difficulty
Easy
Time
10 min
Steps
7
Updated

Sounds like this?

  • Battery doesn't last the day
  • Drops quickly from 100%
  • Phone gets warm in pocket
  • Battery Health under 80%

Step by step

  1. See what uses power: iPhone, Settings › Battery. Android, Settings › Battery › Battery usage.
  2. Update apps and the system.
  3. Turn on Low Power Mode (iPhone) or Battery Saver/Power saving (Android).
  4. Lower brightness or turn on auto-brightness, and shorten Auto-Lock/screen timeout.
  5. Limit background refresh and location for apps that don't need it.
  6. Check health: iPhone, Settings › Battery › Battery Health. Android varies; Samsung Members › Diagnostics › Battery status.
  7. Under about 80% capacity usually means a battery replacement will help.

Related error codes & messages

Quick answers

When should I stop and get professional help with "Phone battery draining fast"?

Stop and get help if: Battery is swollen or the screen is lifting. Phone shuts off at 20-30%. Health shows 'Service'. Boise Computer Care can diagnose it for a $60 fee; call 208-996-3508.

How long does this fix take and how hard is it?

Plan on 10 min. Difficulty: Easy.

Is it safe to try this myself?

Mostly, if you follow these precautions: Replace swollen batteries immediately. Don't use cases or chargers that leave the phone hot.

Which error messages or codes does this guide cover?

Service, Battery Health below 80%.

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