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Speed up an older iPhone
Older iPhones feel slow when storage is full, animations pile up, or a worn battery is triggering performance management.
Easy10 min4.7 editorial · 241 reviews
Typical signs: Keyboard lag, Apps take long to launch, iOS feels heavy after an update.
Step 1 of 5
You will need: Settings app.
Check storage and battery health together
Settings → General → iPhone Storage should not be full to the last gigabyte. Settings → Battery → Battery Health tells you if iOS is managing peak performance because the cell is worn. Those are different fixes.