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The overall capacity of your internet connection is based on traffic flowing in both directions - uploads and downloads both share that capacity. Most other tools test your download speeds and upload speeds separately, which often produces higher numbers than what you’re actually likely to experience. One of the things that sets Apple’s built-in network quality tool from third-party apps such as Ookla’s Speedtest is that it measures your upload and download capacity in parallel by both sending and receiving data simultaneously. High: Regardless of the number of devices and apps sharing the network, apps and services should maintain a good connection.Medium: When multiple devices or apps are sharing the network, you may see momentary pauses or freezes, such as during FaceTime audio or video calls.Low: If any device on the same network is, for example, downloading a film or backing up photos to iCloud, the connection in some apps or services may be unreliable, such as during FaceTime video calls or gaming.Here’s what these mean, according to Apple’s support document:
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This includes the actual upload and download capacity, normally expressed in Mbps, or megabits per second, along with a simple classification of your network quality as High, Medium, or Low.
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