Start with the simple checks. Change one thing at a time so you can tell which step helped.
Photos, videos, offline media and app data can fill a phone faster than expected. First, note what changed recently and whether the same issue affects another device. This helps separate a device-specific fault from a wider network or service issue.
Troubleshooting steps
Check the basics
Open Android storage settings to see which categories are largest. After each change, repeat the action that originally failed and give the device a moment to reconnect or refresh.
Review the settings
Review downloads and offline media within the apps that created them. After each change, repeat the action that originally failed and give the device a moment to reconnect or refresh.
Test one change
Back up photos and verify the backup before deleting local copies. After each change, repeat the action that originally failed and give the device a moment to reconnect or refresh.
Confirm the result
Clear an app’s cache only when appropriate; clearing app data may remove sign-ins or saved content. After each change, repeat the action that originally failed and give the device a moment to reconnect or refresh.
Helpful note
Do not install unknown cleaner apps that demand broad access to files and contacts.
When to get more help
If these checks do not resolve the issue, contact the relevant device maker, internet provider or app support team. Include the exact model, software version, any error message, what you have already tried and when the problem began. Avoid sharing passwords, verification codes or private account details in a public forum.
For equipment that is hot, damaged, wet or making unusual electrical sounds, stop using it and seek qualified support. Do not open power supplies, batteries or mains-powered equipment.
Settings and menu names vary by model and software version. Use the manufacturer's current instructions for device-specific steps, and back up important files before making changes that could remove data.