Mobile Data Speed Test
Check your real 4G, 5G or LTE speed in seconds. Measure download, upload, latency and jitter on your phone, with no app to install.
On Wi-Fi right now? Turn it off first so the test runs over your cellular connection.
How to test your mobile data speed
To measure your true cellular speed, switch Wi-Fi off so your phone uses 4G, 5G or LTE, then tap Start Test above. SpeedOf.Me downloads and uploads real sample files and reports four numbers that describe your connection:
- Download - how fast data reaches your phone (streaming, browsing, downloads).
- Upload - how fast you can send data (video calls, photos, posts).
- Latency - the round-trip delay, in milliseconds; lower is better for calls and gaming.
- Jitter - how much that delay varies; low jitter means a stable connection.
The test uses real data from your plan, usually a few tens of megabytes. On a capped or roaming plan, keep that in mind before running it repeatedly.
What is a good mobile data speed?
It depends on your network generation and signal. These are typical real-world ranges:
| Connection | Typical download | Good for |
|---|---|---|
| 3G | 1-5 Mbps | Email, maps, SD video |
| 4G / LTE | 10-50 Mbps | HD streaming, video calls |
| 5G | 100-1000+ Mbps | 4K streaming, large downloads, hotspots |
For most people, anything above about 5 Mbps handles everyday browsing and streaming comfortably. If you are well below the range for your network type, you are probably dealing with weak signal, congestion, or throttling.
Why test cellular data with SpeedOf.Me
SpeedOf.Me runs entirely in your mobile browser, so there is nothing to install and no SDK collecting your data. It uses a single-stream measurement with progressively larger real files, which reflects what a single download or video stream actually achieves on cellular, rather than the inflated peak some multi-stream tools report. Because it pulls real files from a global content network rather than a server inside your ISP, the result reflects your real-world internet speed, not an optimistic one.
Mobile data speed test FAQ
Why is my mobile data slow?
Usually weak signal, network congestion at busy times, throttling after you pass a data cap, or your phone falling back from 5G to 4G/3G. Run the test in a couple of locations to compare, and check your signal bars and your plan's remaining data.
Is this the same as a Wi-Fi speed test?
The test is the same; the connection is not. To measure home or office Wi-Fi instead, keep Wi-Fi on, or use the main SpeedOf.Me test. Cellular results vary far more with location and signal than Wi-Fi.
Do I need an app?
No. SpeedOf.Me is a web-based test that works in Safari, Chrome and any modern mobile browser, no download required.