Nairametrics reported that MTN Nigeria blames phone settings for data depletion. The headline is all we have on that story, so we won't guess at the details. But it points at something every reader can test today: a lot of data disappears because of what your phone does in the background, not because of what you browse.
If you buy data every week and still run out by Wednesday, this guide shows you how to find where it goes, which settings to change, and what to do if you think you've been wrongly charged.
Why data cost is a savings problem
For many households, data is a fixed monthly cost like transport or electricity. Work, school, banking apps, and side income all depend on it. A leak of even a few hundred naira a week adds up over a year.
Treat it like any other budget line. If you're building a budget, our post on budget types compared will help you decide where a "data" line fits. Then use the steps below to shrink it without going offline.
Step 1: Find out what is actually using your data
Don't change anything until you know the culprits. Menu names differ by phone brand and software version, so search "data usage" in your Settings app if you can't find them.
- Android: open Settings, then Network or Connections, then Data usage (or SIM and data). Choose "Mobile data usage" and view the list of apps for the current cycle.
- iPhone: open Settings, then Mobile Data (or Cellular). Scroll down to see usage per app.
- Reset the counter at the start of a new plan if your phone lets you, so you're measuring one plan only.
- Write down the top three apps. Those are your targets.
Expect surprises. Video apps, social media, and app stores often top the list. A map or music app you rarely open can also appear high.
Step 2: Settings that commonly drain data
Background data and app refresh
Many apps keep refreshing even when closed. On Android, open an app's data usage page and turn off "Background data" for apps you don't need live (games, shopping apps, extra social apps). On iPhone, turn off Mobile Data for individual apps in the same Mobile Data list, or turn off Background App Refresh.
Keep background data on for apps where you need alerts, such as your bank app or work chat.
Automatic app updates
App updates can be large. In Google Play, open Settings, then Network preferences, then Auto-update apps, and choose "Over Wi-Fi only" or "Don't auto-update." On iPhone, go to Settings, App Store, and switch off Mobile Data for automatic downloads. Also check that system updates download over Wi-Fi only.
Video autoplay
Videos that start by themselves in Facebook, Instagram, X, TikTok, and YouTube use data every time you scroll. Look inside each app's settings for "Autoplay," "Data saver," or "Use less data," and set autoplay to Wi-Fi only or off. Lower the default video quality too. Watching at a lower resolution on a small phone screen costs you very little in clarity.
WhatsApp media auto-download
In WhatsApp, open Settings, then Storage and data. Under "Media auto-download," set "When using mobile data" to no media, or photos only, and leave videos and documents for Wi-Fi. Turn on "Use less data for calls" if you make many WhatsApp calls. Group chats full of videos can quietly use a large share of a plan.
Cloud backups and photo sync
Google Photos, iCloud, and WhatsApp backups can upload large files over mobile data. Set backups to Wi-Fi only. For WhatsApp, open Settings, Chats, Chat backup, and make sure "Back up using cellular" is off.
Data saver mode
Android has a Data Saver switch, and iPhone has Low Data Mode (in Mobile Data options). Both reduce background activity. Turn them on when you're low on data or travelling.
Wi-Fi assist and weak signal behaviour
Some phones switch to mobile data automatically when Wi-Fi is weak. Look for "Wi-Fi Assist" on iPhone or "Switch to mobile data automatically" or "Smart network switch" on Android and turn it off if your Wi-Fi is usually slow but you don't want to be charged for the switch.
Step 3: Set limits so you get warned early
On Android, open Data usage, then Billing cycle and data warning, and enter your plan size. Set a warning slightly below it and, if you prefer, a hard limit that switches mobile data off. iPhone doesn't have a built-in limit, but the usage list plus a weekly check works.
Also check your balance through your network's official app or USSD code. Use only the code published by your network. Never share your PIN, OTP, or SIM details with anyone who calls to "fix" your data.
A hypothetical example
This is an illustration with made-up numbers. Suppose you buy a 10GB plan for ₦X a month and it finishes in 12 days. You check usage and find:
| Source | Share of 10GB | Fix |
|---|---|---|
| Video autoplay on social apps | 2.5GB | Autoplay Wi-Fi only |
| WhatsApp media auto-download | 1.5GB | No media on mobile data |
| App updates and backups | 1.5GB | Wi-Fi only |
| Streaming music at high quality | 1GB | Normal quality, download on Wi-Fi |
| Work and banking apps | 1.5GB | Keep as is |
| Everything else | 2GB | Review monthly |
If those four fixes cut even half of the first four lines (about 3.25GB), the same plan lasts roughly 18 days instead of 12. Or you buy a smaller plan and save the difference. Replace ₦X with your own price and recalculate with your real numbers.
Step 4: Use Wi-Fi and plan timing wisely
- Download on Wi-Fi, use offline. Songs, playlists, maps, and videos can be saved while you're at an office, school, or café with free Wi-Fi.
- Match the plan to your habits. If most of your use is at night, a night bundle (where your network offers one) may suit you. If you only use WhatsApp, check whether a social bundle exists. Confirm the terms on your network's official channels, since offers change.
- Watch expiry dates. Unused data that expires is money lost. Many networks let you renew early to roll over data. Check the rules before relying on that.
- Avoid auto-renewal surprises. If you've enabled auto-renew, make sure you still want it, and that your airtime or bank card isn't charged for plans you don't use.
Common mistakes
- Turning off all background data. You'll miss bank alerts and work messages. Switch off only the apps you've identified as wasteful.
- Using mobile data for large downloads "just this once." One game download can be several gigabytes.
- Ignoring hotspot sharing. Friends or family connected to your hotspot use your plan. Set a hotspot password, and check connected devices.
- Trusting random "data booster" apps. Many are adverts or worse. Use your phone's built-in tools.
- Clicking links in messages promising free data. These are often phishing. Only use your network's own app or website.
If you think you were wrongly charged
Settings can explain a lot, but not always everything. If your data vanishes while the phone was off or unused, do this:
- Take screenshots of your balance before and after, with the date and time visible.
- Check the app usage list to rule out background use.
- Contact your network's customer care through its official app, website, or short code, and ask for a usage or billing breakdown. Note the ticket number.
- If you're not satisfied, escalate to the telecoms regulator in your country. In Nigeria that is the NCC. In Ghana, Kenya and South Africa, check your national regulator's official website for the complaints process.
Keep your tone factual. Dates, amounts, and screenshots get better results than anger.
Frequently asked questions
Does turning off mobile data when I'm not using it help?
Yes, if apps are running in the background. It's the quickest test. Turn data off for a few hours with the phone idle, then compare your balance when you turn it back on.
Do older phones use more data?
Not necessarily, but older software versions and many installed apps can mean more background activity. Remove apps you don't use.
Is a dual SIM phone a risk to my data?
Only if the wrong SIM is set as your data SIM. Check Settings and make sure mobile data points to the SIM with your active plan.
Can I save more with Wi-Fi at home?
Often, if your usage is heavy and the monthly cost works out lower. Compare your current monthly data spend with the quoted home internet cost from providers in your area, including power backup for the router.
Your next step
Tonight, open your data usage list and note the top three apps. Change the autoplay, auto-download, and update settings for those apps, then check again in seven days. If you've saved money, move that amount into your emergency savings. Our guide on saving money when inflation is high shows other small cuts that add up.
Source: MTN Nigeria blames phone settings for data depletion (Nairametrics)
This article is for general information only and is not financial, legal, or tax advice. Prices, rates and rules change quickly, so check current details before making money decisions.