Where Did My 100GB Go? The Starlink Data Traps Nobody Warns You About
If you've checked your Starlink app a few days into your billing cycle and thought "what the hell happened to my data?"—you're not alone. Here's what's actually eating your allowance, and the simple fixes that can increase how long your 100GB lasts.
The Data Reality Check
You've got your Starlink Mini mounted on the roof, you're finally connected in the middle of nowhere, and life is good. Then you check the Starlink app three days in and somehow you've already burned through 30GB. Sound familiar?
On the Starlink Roam 100GB plan ($80/month), every gigabyte counts. When you exceed your cap, your speed drops to approximately 0.5 Mbps for the rest of your billing period—enough for basic browsing and emails, but not much else.
The good news? Most people are unknowingly wasting data on things that don't matter. Speed tests, background app refresh, cloud photo syncing, auto-updates—they're quietly chewing through your allowance.
This guide shows you exactly where your data goes and the settings that can slash your consumption by 50% or more.
⚠️ The Speed Test Trap: Stop Checking Your Speed!
This is the single biggest data mistake Starlink users make.
Every time you run a speed test—whether through Speedtest.net, Fast.com, or even the Starlink app itself—you're downloading and uploading a massive amount of data to measure your connection.
Each speed test uses 100MB to 1GB of data.
Let that sink in. If you're the type who checks your speed a few times a day "just to see," you could easily burn through 2-5GB per week on tests alone. That's 8-20GB per month—up to 20% of your 100GB plan—just watching numbers on a screen.
The Math:
- 5 speed tests at 500MB average = 2.5GB gone (2.5% of your 100GB plan)
- Daily speed tests for a month = 15-30GB (15-30% of your plan!)
The Fix: Check your speed once when you first set up, then stop. Use the Starlink app's data usage tracking instead—it shows your consumption without wasting any data. If you're troubleshooting connection issues, one test is fine. But daily speed-checking is the fastest way to blow through your cap.
Where Your Data Actually Goes: Streaming Services Compared
Streaming video is usually the biggest data consumer, but the amount varies wildly depending on the service and quality setting. Here's exactly what each service uses:
Netflix Data Usage Per Hour
| Quality Setting | Data Per Hour | Hours on 100GB |
|---|---|---|
| Data Saver Mode | 170 MB | 588 hours |
| Low (SD 480p) | 300-700 MB | 142-333 hours |
| Medium (HD 720p) | 1.5 GB | 66 hours |
| High (Full HD 1080p) | 3 GB | 33 hours |
| Ultra HD (4K) | 7 GB | 14 hours |
YouTube Data Usage Per Hour
| Quality Setting | Data Per Hour | Hours on 100GB |
|---|---|---|
| 240p (Low) | 150 MB | 666 hours |
| 360p | 300 MB | 333 hours |
| 480p (SD) | 500-700 MB | 142-200 hours |
| 720p (HD) | 1-2 GB | 50-100 hours |
| 1080p (Full HD) | 2.5-3 GB | 33-40 hours |
| 4K | 7-10 GB | 10-14 hours |
Other Streaming Services
| Service | SD Quality | HD Quality |
|---|---|---|
| Disney+ | 800 MB/hour | 2 GB/hour |
| Stan | 700 MB/hour | 2.5 GB/hour |
| Amazon Prime Video | 200 MB/hour | 1.1 GB/hour |
| Kayo Sports | 1 GB/hour | 3 GB/hour |
| ABC iView / SBS On Demand | 500 MB/hour | 1.5 GB/hour |
Key Insight: Dropping from HD to SD doesn't noticeably affect picture quality on phone or tablet screens, but it cuts your data usage by 60-70%. Only use HD when watching on a larger TV screen where you'll actually notice the difference.
Music vs Video: The Data Difference
If you think streaming music uses lots of data like video does, here's a surprise:
| Activity | Data Per Hour | Comparison |
|---|---|---|
| Spotify (Normal quality) | 40 MB | 1/75th of HD video |
| Spotify (High quality) | 70 MB | 1/43rd of HD video |
| Spotify (Very High) | 150 MB | 1/20th of HD video |
| Apple Music | 50-150 MB | Depends on quality |
| Podcasts | 30-60 MB | Very light |
| Netflix HD (comparison) | 3,000 MB | — |
The takeaway: You can listen to music for 40+ hours on the same data that gets you 1 hour of HD video. When you're working and just want background audio, music streaming is a far better choice than having YouTube or Netflix running.
Other Common Activities: Data Usage Reference
| Activity | Data Usage | Notes |
|---|---|---|
| Web Browsing (light) | 30-60 MB/hour | Higher with image-heavy sites |
| Social Media (scrolling) | 100-300 MB/hour | Videos autoplay uses more |
| Email (with attachments) | 50-200 MB/hour | Large attachments add up |
| Video Calls (Zoom/Teams SD) | 500 MB/hour | HD calls use 1.5 GB/hour |
| Online Gaming | 50-150 MB/hour | Game updates are the killer |
| Cloud Photo Backup | 2-10 GB per sync | Can drain your plan overnight |
| App/OS Updates | 500 MB - 5 GB each | iOS updates often 2-3 GB |
| Background App Refresh | 5-15 GB/month | Silent data killer |
iPhone Settings to Cut Your Data Usage in Half
Your iPhone has several settings that quietly consume data in the background. Here's how to disable them for your Starlink network specifically:
1. Enable Low Data Mode for Starlink
This is the single most effective setting. When enabled, your iPhone reduces background data, pauses automatic updates, and lowers media quality.
- Open Settings
- Tap Wi-Fi
- Tap the (i) icon next to your Starlink network name
- Toggle Low Data Mode ON
This applies only to your Starlink network—your iPhone will use normal data mode on other Wi-Fi networks.
2. Turn Off Background App Refresh
Apps constantly refresh in the background even when you're not using them. Social media, news apps, and email are the biggest culprits.
- Open Settings
- Tap General
- Tap Background App Refresh
- Either turn it OFF entirely, or select Wi-Fi and then manually disable it for data-hungry apps
3. Stop iCloud Photos Syncing
If you take photos while connected to Starlink, iCloud will try to upload them immediately—potentially using gigabytes of data.
- Open Settings
- Tap your Apple ID (your name at the top)
- Tap iCloud
- Tap Photos
- Toggle Sync this iPhone OFF while on Starlink
Remember to turn it back on when you're on unlimited home Wi-Fi.
4. Disable Automatic Downloads
Stop the App Store from automatically downloading app updates and purchases.
- Open Settings
- Tap App Store
- Under Automatic Downloads, toggle OFF:
- Apps
- App Updates
5. Turn Off Wi-Fi Assist
This feature automatically switches to mobile data when Wi-Fi is weak—which can cause unexpected mobile data charges and confusion about your usage.
- Open Settings
- Tap Mobile (or Cellular)
- Scroll to the very bottom
- Toggle Wi-Fi Assist OFF
Android Settings for Data Saving
Android devices have similar options, though the exact menu names vary by manufacturer (Samsung, Google Pixel, etc.):
1. Set Starlink as a Metered Network
- Open Settings
- Tap Network & Internet (or Connections)
- Tap Wi-Fi
- Long-press your Starlink network, tap Modify Network or the gear icon
- Tap Advanced
- Set Metered to ON (or select "Treat as metered")
This tells Android to treat your Starlink connection like mobile data, restricting background usage.
2. Enable Data Saver Mode
- Open Settings
- Tap Network & Internet
- Tap Data Saver
- Toggle it ON
3. Disable Auto-Sync
- Open Settings
- Tap Accounts (or Passwords & Accounts)
- Toggle Auto-sync data OFF
How Much Data Can Low Data Mode Save?
Here's the real-world difference Low Data Mode makes:
| Activity | Normal Mode | Low Data Mode | Savings |
|---|---|---|---|
| Web Browsing (1 hour) | 60 MB | 30 MB | 50% |
| Emails with Attachments | 200 MB | 50 MB | 75% |
| Video Calls SD (1 hour) | 500 MB | 250 MB | 50% |
| Cloud Photo Sync | 2-10 GB | 500 MB - 1 GB | 80-90% |
| Background Updates (monthly) | 10+ GB | 1-2 GB | 80-90% |
Total potential monthly savings: 15-25 GB—that's a significant chunk of your 100GB plan preserved for things you actually want to do.
Good News: Starlink Updates Don't Count
Here's something many users don't realise: Starlink terminal and router firmware updates are NOT metered. They don't count against your data allowance.
This includes:
- Starlink dish/terminal software updates
- Starlink router firmware updates
- System maintenance data
So if you see your Starlink downloading updates, don't panic—your 100GB is safe. The system keeps your hardware running optimally without eating into your personal usage.
Streaming Settings: Quick Wins
Most streaming apps have data saver options buried in their settings. Here's where to find them:
Netflix
- Open Netflix app → Profile → App Settings → Cellular Data Usage
- Select "Save Data" or set to "Low"
- Also disable "Download on Wi-Fi Only" autoplay
YouTube
- Open YouTube → Tap profile → Settings → Video Quality Preferences
- Set "Video quality on mobile networks" and "Video quality on Wi-Fi" to Data Saver or 480p
- Turn OFF "Autoplay"
Disney+
- Open Disney+ → Profile → App Settings → Cellular Data Usage
- Select "Save Data"
Stan
- Open Stan → Settings → Streaming Quality
- Select "Low" or "Auto"
Pro Tip: Download content before your trip when you're on unlimited home Wi-Fi. Most streaming apps let you download shows and movies for offline viewing—this uses zero Starlink data.
Real-World Scenarios: What a Typical Day Uses
Here's what different usage patterns actually consume:
Light User (Checking emails, light browsing, weather)
- Email and web browsing: 500 MB
- Social media: 300 MB
- Weather/maps: 100 MB
- Daily total: ~1 GB = 100 days on 100GB plan ✅
Moderate User (Work + some entertainment)
- Video calls (2 hours): 1 GB
- Email/browsing: 500 MB
- Streaming (2 hours SD): 1.5 GB
- Background/updates: 500 MB
- Daily total: ~3.5 GB = 28 days on 100GB plan ✅
Heavy User (HD streaming, no restrictions)
- HD streaming (3 hours): 9 GB
- Video calls: 1.5 GB
- Everything else: 2 GB
- Daily total: 12+ GB = 8 days on 100GB plan ⚠️
The difference between moderate and heavy usage often comes down to video quality settings. Switching from HD to SD streaming can extend your data from lasting 8 days to lasting nearly a month.
What Happens When You Hit 100GB?
Updated January 2026: Starlink no longer charges per-GB overages. Instead, when you exceed 100GB:
- Your speed drops to approximately 0.5 Mbps (similar to Standby Mode)
- You get unlimited data at this reduced speed for the rest of your billing period
- You're not cut off completely—basic browsing, email, and messaging still work
Starlink sends notifications at 80GB and 100GB so you're not caught off guard.
If you need full speed restored before your billing cycle resets, your only option is upgrading to Roam Unlimited ($195/month).
For most users, this is actually better than the old system—you still have basic connectivity even if you blow through your allowance, rather than facing surprise charges or being cut off entirely.
Monitor Your Usage: Stay Ahead of the Cap
The Starlink app shows your current billing cycle data usage. Check it regularly:
- Open the Starlink app
- Tap Statistics or Network
- View your data usage for the current period
Set a calendar reminder to check your usage at 25%, 50%, and 75% of your billing cycle. If you're at 75% usage halfway through the month, it's time to tighten up your settings.
You'll also receive automatic alerts at 80GB and 100GB.
Check Per-Device Usage on iPhone
See which apps are using the most data:
- Settings → Mobile (Cellular)
- Scroll down to see data usage by app
- Tap "Last Billing Period" or "Reset Statistics" to track from a specific date
When to Consider Roam Unlimited
With 100GB now standard on the Roam plan, most travellers will find it's enough—especially with the data-saving tips in this guide.
Consider upgrading to Roam Unlimited ($195/month) if:
- You're travelling with family and multiple heavy users
- You stream HD/4K content regularly on large screens
- You work remotely with constant video calls and large file transfers
- You simply don't want to think about data usage
For solo travellers, couples, and anyone willing to use SD streaming on smaller screens, the 100GB plan at $80/month offers excellent value.
Quick Reference: 7 Tips to Reduce Starlink Data Usage
- Stop running speed tests - Check once, then use the Starlink app to monitor
- Enable Low Data Mode - Single biggest saver on iPhone/Android
- Set streaming to SD - 60-70% savings with minimal quality loss on phones/tablets
- Disable background app refresh - Silent data killer
- Turn off cloud photo sync - Sync when you're back on home Wi-Fi
- Download content before trips - Use unlimited Wi-Fi for offline viewing
- Disconnect unused devices - Smart TVs and tablets use data even when "idle"
Download our free Starlink Data Saver Checklist (PDF) - Print it out and tick off each setting as you go.
Related Guides
- Starlink Roam Now 100GB in Australia - Full breakdown of the January 2026 upgrade
- Starlink Roam Plans Explained - Compare Standby, 100GB, and Unlimited
- iPhone Automation: Stop Your Phone Switching to Mobile Data - Prevent unexpected data usage when your phone switches away from Starlink
- Setting Up a Secure Guest Network - Keep your devices separate and manage who connects
- Starlink Mini Setup Guide - Complete guide to getting connected
Conclusion
Managing your Starlink data doesn't mean sacrificing your online experience—it means being smart about where those gigabytes go. The biggest wins come from stopping speed tests, enabling Low Data Mode, and dropping streaming quality to SD on smaller screens.
With the recent upgrade to 100GB (from 50GB), most users can comfortably stretch their Roam plan through an entire billing cycle with data to spare. And even if you do exceed the cap, you'll still have basic low-speed connectivity rather than being cut off or facing overage charges.
Have questions about getting connected in remote Australia? Browse our Starlink Mini mounting solutions or reach out—we're always happy to help fellow bush internet users.
Dishy Mini Mounts - Outback Tough Starlink accessories. Australian owned, Australian made mount kits. Based in Leeton, NSW.