Your phone is probably limiting the charge on purpose

Many Android phones stop near 80% to protect the battery. It is a setting, not a fault.

Samsung calls it Battery protection, and Pixel calls it Charging optimization. Both hold the battery below full to slow down wear.

Try this now

1. Open Settings, then Battery, and look for Battery protection or Charging optimization.
2. Choose a mode that allows 100% if you need a full charge today.
3. Leave the limit on for everyday use if your phone lasts the day. It helps the battery age slowly.

Step-by-step guides for this

• Why won't my Android phone charge past 80%?
• Why is my Android phone not charging?

Other possible causes

• Heat is the likely reason your battery drains
• A new app or update is likely using extra power
• Your battery may be wearing out
• Weak signal is likely draining your battery
• Apps running in the background are the likely cause
• Your screen and daily use are the main drain

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