Before you run any test, you must prepare your environment. Otherwise, the results will be inaccurate.

If your test results are significantly lower than what you are paying for, follow this checklist:

When the test finishes, you get three main numbers. Here is what they mean for a DSL connection:

Since Vodafone operates in multiple countries (e.g., Germany, UK, Italy, Spain), this guide covers the universal methods to get the most accurate result, plus specific tools Vodafone provides.

: How fast you can send data out (e.g., posting to social media or video calling). This is usually much lower than download speed on DSL.

If you want to compare results or check your "real world" internet speed, use these reliable tools:

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