Download speed measures how quickly data reaches you; upload speed measures how quickly your device sends data out. Different activities depend on them in different ways.
Quick answer
Streaming and browsing rely heavily on download speed, while cloud backup, sending large files and live video depend more on upload speed.
How to troubleshoot
- Confirm whether the issue affects one device or multiple devices.
- Run a fresh connection test before changing settings.
- Check the router, signal strength and internet status separately.
- Make one change at a time and test again.
Why this matters
Good troubleshooting separates local device problems, Wi-Fi problems, router problems and ISP problems. That prevents unnecessary resets and makes it easier to explain the issue to support.
Use Net Status
Run a browser test now or use the Android app for deeper connection diagnostics.