You check your data balance one morning and find several gigabytes missing — but you barely used the internet yesterday. The culprit is almost always the same: software updates. Operating systems, apps, and games download patches in the background, often at night, and the amounts involved are far larger than most people expect.
This guide breaks down how much data typical updates actually consume, why update sizes keep growing, and what you can do to keep them from eating your monthly allowance.
Why software updates keep getting bigger
A decade ago, a Windows patch was a few hundred megabytes and a phone update fit comfortably on a slow connection. Three trends changed that. First, modern operating systems ship new features continuously instead of every few years, so there is simply more code to refresh. Second, media assets — high-resolution icons, wallpapers, voice packs, language models — ride along inside updates. Third, games in particular now download cinematic content and entire rebuilt maps with every patch.
Incremental "delta" updates have helped: instead of downloading the whole file, many platforms now download only the parts that changed. But even delta updates add up when you have several devices and dozens of apps updating on their own schedules.
How much data common updates actually use
Exact sizes vary by version, but these typical figures give a realistic picture of what to expect:
| Update | Typical size | How often |
|---|---|---|
| Windows 11 monthly (Patch Tuesday) update | 1–2 GB | Monthly |
| Windows 11 feature update | 4–6 GB | Once or twice a year |
| macOS major upgrade | 12 GB or more | Once a year |
| iOS major release | 2–6 GB | Once a year |
| iOS point release | 0.5–1 GB | Every few weeks |
| Android major version update | 1–3 GB | Once or twice a year |
| Android monthly security patch | 0.2–0.5 GB | Monthly |
| Game patches (PS5, Xbox, PC) | 5–50 GB | Per game, monthly or more |
| Typical app updates (phone) | 0.05–0.5 GB each | Several per week |
The standout here is gaming. A single large game update can be bigger than a month of Windows patches combined. If someone in your house plays games on a console and another person updates a laptop, your household's "update bill" can easily reach 20–40 GB in a busy month.
The hidden cost on capped and mobile plans
On an unlimited fibre connection, update sizes are just an inconvenience. On capped broadband, mobile hotspots, satellite links, or roaming plans, they are a real cost. A 6 GB feature update on a 50 GB mobile plan is twelve percent of the month's allowance, gone before you watched a single video.
The sting is worse because updates are invisible. Most platforms download in the background and install overnight, so users rarely connect a drained data balance to a 3 a.m. patch. If your data keeps disappearing faster than your browsing habits explain, updates are the first thing to check.
Do the math: estimate your monthly update bill
You can roughly estimate how much of your plan goes to updates with a simple calculation:
Monthly update data ≈ (OS updates × average size) + (apps × updates per month × average size) + (games × patches × average size). Example: one laptop (2 GB/month) + phone (25 apps × 4 updates × 0.15 GB = 15 GB) + one console game (1 × 20 GB) ≈ 37 GB per month just for updates.
Run the numbers for your own household. Most people are surprised — the phone alone, with its dozens of apps updating several times a month, is often the biggest single contributor.
How to cut update data usage without going unpatched
Skipping updates is not the answer: they carry security fixes. Instead, control when and how updates download:
- Restrict updates to Wi-Fi only. On phones, set app stores and system updates to never download on mobile data.
- Mark slow connections as metered. Windows, Android, and iOS all let you flag a network as metered, which pauses automatic downloads.
- Schedule updates for off-peak hours. Many ISPs offer free night data windows — shift large downloads there.
- Pause game auto-updates. Consoles download patches for every installed game by default; limit auto-updates to the games you actually play.
- Update once, share locally. Windows Delivery Optimization can share downloaded updates between PCs on the same network instead of downloading twice.
- Turn off auto-play video previews in app stores — those previews also chew through data silently.
- Delay non-critical updates. Pausing Windows updates for a week or two bundles several patches into fewer downloads.
Try it now: Software Update Data Calculator — estimate how much data your devices' updates consume each month.
Frequently asked questions
Do software updates use Wi-Fi data or mobile data?
Updates use whichever connection is active. If your phone downloads a system update while on mobile data, it counts against your mobile plan — which is why every major platform offers a "Wi-Fi only" setting for updates.
How do I stop updates from using my mobile data?
On iPhone, enable Low Data Mode and set App Store downloads to Wi-Fi only. On Android, set the Play Store to update over Wi-Fi only and flag mobile connections as metered. On Windows, mark the hotspot connection as metered to pause automatic updates.
Can I schedule large updates for the night?
Yes. Windows lets you set active hours and pause updates; game consoles and phones can be configured to download only when connected to Wi-Fi and charging overnight — ideal if your ISP offers free off-peak data.