For a lot of us, the phone has quietly become the main screen. We watch shows on the commute, follow recipes in the kitchen, stream music through the day, back up photos automatically and lean on maps whenever we are out. All of that runs on one thing: data. And nothing kills the mood faster than a video stalling to buffer or a “you’ve used all your data” text arriving two weeks early.
So before comparing plans, it helps to know what streaming actually costs in gigabytes. Once you have a rough number for your own month, choosing a mobile data plan stops being guesswork.
How Much Data Does Streaming Really Use?
These are typical figures rather than exact ones — apps and quality settings vary — but they give a realistic sense of where an allowance goes.
| Activity | Rough data use | What that means over a month |
|---|---|---|
| Music streaming | Around 40–150MB per hour | An hour a day is roughly 2–4GB |
| Video in standard definition | Around 0.5–1GB per hour | Thirty minutes a day is roughly 10–15GB |
| Video in HD | Around 1.5–3GB per hour | An hour a day can pass 60GB |
| Video calls | Around 0.5–1GB per hour | A few calls a week adds up to several GB |
| Tethering a laptop | Depends entirely on what the laptop does | Easily the biggest single drain |
The pattern is clear: casual browsing sips data, but HD video, gaming and tethering drink it fast. If your month includes a lot of the bottom rows, a bigger data plan will save you from repeatedly topping up — a little spare allowance is more affordable and far less stressful than running dry.
The Plan Ladder, From Everyday to Unlimited
All of the data plans available include unlimited UK calls and texts and 100 international minutes on a rolling 30-day term with no contract. They step up like this.
Step 1 — National Plus (30GB)
A solid everyday allowance for social media, music and a bit of video. Best for typical users who stream in moderation and are on Wi-Fi at home.
Step 2 — UK Plan Super Extra (75GB)
Comfortable for daily streaming, browsing and maps, with EU, China and India data roaming for wider travel. Best for regular users who stream often and go beyond Europe.
Step 3 — UK Plan Mega Plus (120GB)
Plenty for daily HD streaming and large downloads, with EU and India roaming included. Best for heavy users who want near-limitless data with a little structure.
Step 4 — UK Plan Unlimited
Truly unlimited data — stream, download and tether with no cap to watch — plus EU and India roaming. Best for heavy streamers, remote workers and anyone who never wants to ration data.
The safety net — Data Add-On
A quick way to add extra data if you run low before your plan renews. It keeps you streaming without switching to a bigger plan, which makes it ideal for the occasional heavy month rather than a permanent step up.
Which Step Should You Start On?
A quick way to decide: add up the table rows that describe your typical week, then pick the step above it rather than the one that matches exactly. If you mostly stream music and scroll, Step 1 will feel roomy. If there is a daily episode on the train, Step 2 is the comfortable choice. If you tether a laptop even occasionally, or share the connection with family on trips, jump straight to Step 3 or 4 — tethering is the one activity that can empty a mid-sized allowance in a weekend. And because every plan renews on a 30-day term, starting one step too low costs you nothing but a quick change next month.
The extras are the same at every step: unlimited UK calls and texts, 100 international minutes, and roaming on the higher tiers, so upgrading for data never means giving anything else up.
Three Habits That Stretch Any Allowance
Download shows and playlists over Wi-Fi before you head out, so the commute runs on storage rather than data. Drop streaming quality from HD to standard on mobile — on a phone screen the difference is small, but the saving is large. And turn on Wi-Fi auto-connect at home and work so background updates never eat into your plan.
The Takeaway
The best data plan is simply the one that keeps up with how much you stream, without a contract to worry about. Estimate your busiest month with the table above, leave a little headroom, and you will rarely think about data again. Browse the latest data plans and keep streaming wherever you are.
That’s the two-minute version — for more bite-sized guides on getting the most from your tech, head to 2minuteread.