Symptoms
- Noticeably slower right after installing an update
- Apps take longer to open than before
- Battery may also drain faster temporarily
Likely causes
- CommonBackground app optimization running after the updateThe system re-indexes and optimizes every installed app after a major update, which temporarily uses extra resources.
- PossibleAn app not yet updated to be compatible with the new OS versionOlder app versions can behave poorly on a newer system until the developer releases an update.
- PossibleStorage nearly full after the update itself took up spaceUpdates can use significant temporary storage, worsening an already-tight storage situation.
What to do
- Give the tablet 24–48 hours after a major update for background optimization to finish.
- Check for pending updates to your individual apps in the app store.
- Restart the tablet once optimization has had time to settle.
- Check available storage, since the update itself may have used up free space temporarily.
- If slowness continues well beyond a couple of days, check battery and storage usage in settings for anything unusual.
- As a last resort, a factory reset (after backing up) often restores speed if the slowdown doesn't resolve on its own.
When to call a pro
This is a software settling-in issue rather than a hardware problem; a repair shop isn't typically needed unless the tablet is very old and simply can't keep up with the new OS.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.