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How Much Mobile Data You Actually Use: A Complete Guide

Being told a plan comes with "1GB" or "5GB" doesn't tell you much on its own. Here is a rough breakdown of data usage by common activity (actual figures vary with video quality and settings).

Browsing the web is relatively light

Loading a text-heavy news site typically uses a few megabytes per page. Pages with lots of images or video use noticeably more.

Standard-definition video: roughly 1GB per hour

Streaming video at standard definition (SD) typically uses somewhere around 0.5 to 1GB per hour. Dropping the quality setting is an easy way to cut that down further.

High-definition video: roughly 3GB per hour

Watching in high definition (HD) can push data usage up to around 3GB per hour. If you are out and about with limited data left, lowering the quality setting in advance is worth doing.

Music streaming: roughly tens of megabytes to 150MB per hour

Depending on the audio quality setting, streaming music typically uses somewhere around 40 to 150MB per hour -- far less than video.

Video calls: roughly 200-300MB per hour

A standard-definition video call typically uses around 200 to 300MB per hour of data. Higher video quality settings use more.

Map navigation apps use comparatively little

Using a maps app for turn-by-turn navigation typically uses just a few to a dozen or so megabytes per hour, far less than streaming video, though it varies with how often the map reloads and traffic data refreshes.

Wi-Fi does not count against your mobile data

Time spent connected to Wi-Fi, whether at home or out, is not counted against your mobile data allowance. Doing data-heavy tasks like downloading video over Wi-Fi whenever possible is an easy way to conserve your plan's data.

Why these estimates cover such a wide range

Even for the same activity, like watching video, actual data usage varies with the quality setting, the compression method used by the streaming service, and the content itself (how much motion is in the video). Treat the numbers here as general ballparks -- if you want an accurate figure, checking the data-usage log built into your phone or apps is the most reliable approach.

Tips for choosing a data plan that fits you

If you rarely watch video and mostly browse the web or use messaging apps, a few gigabytes a month is often enough. If you frequently stream video while out, you may need several dozen gigabytes or more per month. Before signing up for a plan, checking your phone's data-usage history in its settings is a useful way to gauge how much you will actually need.

Frequently Asked Questions

Are there easy ways to cut down on data usage?

Lowering video quality settings, turning off autoplay, and setting apps to only auto-update over Wi-Fi are all simple ways to reduce how much mobile data you use.

What happens when I use up my plan's data allowance?

Many plans sharply throttle your connection speed once you hit your data limit. Some carriers offer the option to buy additional data, so it is worth checking what your plan allows.