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How to Use Data Roaming Efficiently?

Your phone burns roaming data before you open a single app. These 10 settings stop that: Low Data Mode, WhatsApp auto-downloads, cloud backups, and more.

StarHub Editorial 14 Apr 2026 10 mins read
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10 settings to maximise your data efficiency $0 unexpected roaming charges on Unlimited+ 3 affordable roaming add-ons for extra data

In This Guide

  1. Before you fly: data settings to change
  2. When you land: how roaming works?
  3. In what order is your roaming data used up?
  4. What happens when your data runs low?
  5. FAQs

Getting the Most Out of Your Roaming Data, Step by Step

Roaming doesn’t have to mean bill shock or lost connectivity. This guide walks you through the key moments of your trip from preparation to daily use, so you can travel with confidence and stay in control of your data every step of the way.

TL;DR

Your roaming journey, covered

Before you fly
10 settings to change on your phone before you board - phone-wide settings, app settings, and one offline download. Each takes under a minute and prevents background processes from draining your roaming data the moment you land.
When you land
Your phone automatically connects to the strongest StarHub partner network. No manual setup, no SIM swap. On Unlimited+ Plans, roaming is pre-paid and built into your monthly fee - data, calls, and SMS are already covered.
In what order is your roaming data used up?
Data is drawn from the most localised pool first: SEA, then APAC, then Global. Built-in plan data is always used before add-ons. Useful to know if you are travelling through multiple countries on one trip.
What happens when your data runs low?
Data pauses. It does not charge. Calls and SMS continue regardless. Buy an add-on from the StarHub app and your data resumes immediately.

Before you fly: data settings to change

Set these up on your home WiFi before you head to the airport. It takes less than five minutes and will prevent unexpected roaming bills.

GENERAL PHONE SETTINGS

1. Switch on "Data Saver" Mode

It prevents apps from performing background tasks and pauses non-essential updates. This ensures your data is strictly reserved for your immediate needs, such as navigation or accessing travel documents.

🍎 iPHONE
Settings > Mobile Data > Mobile Data Options > Data Mode > Low Data Mode.

Using an eSIM? Tap that line first.
🤖 ANDROID
Samsung: Settings > Connections > Data Usage > Data Saver.

Pixel: Settings > Network > Data Saver.

2. Disable Automatic Network Switching

If your hotel WiFi signal is weak, your phone will automatically switch to roaming data without asking. Turn this off so you only use data when you choose to.

🍎 iPHONE
Settings > Mobile Data > scroll to the very bottom > turn off WiFi Assist.
🤖 ANDROID
Samsung: Connections > WiFi > 3-dots > Intelligent WiFi > turn off Switch to mobile data.

Pixel: Covered by Step 1.

3. Reset Data Usage Statistics

By resetting your stats on your departure day, you can see exactly how much you've used during your holiday. It’s the easiest way to avoid hitting your limit before the trip ends.

🍎 iPHONE
Settings > Mobile Data > scroll to the bottom > Reset Statistics.
🤖 ANDROID
Settings > Network > Mobile Network > Data usage > 3-dots > Reset statistics.
APP SETTINGS

4. Pause Cloud Photo Backups

High-resolution photos are large files that can quickly consume hundreds of megabytes. Adjusting your settings to sync only over WiFi ensures your memories are backed up securely overnight at your hotel rather than over expensive roaming networks.

🍎 iPHONE
Settings > Photos > Mobile Data > turn off Mobile Data.
🤖 ANDROID
Google Photos > Profile > Backup > Mobile data backup > turn Off.

5. Restrict WhatsApp Media Downloads

Group chats often receive high volumes of photos and videos. Setting media to "WiFi Only" allows you to receive and read urgent text messages immediately while deferring large media downloads until you have a WiFi connection.

🍎 iPHONE
WhatsApp Settings > Storage and Data > When using mobile data > Uncheck all.
🤖 ANDROID
WhatsApp > 3-dots > Settings > Storage > When using mobile data > Uncheck all.

6. Turn off automatic App Updates

A single background app update can be 200MB+. Make sure your phone waits for hotel WiFi before updating apps so you don't waste data on software you aren't even using.

🍎 iPHONE
Settings > App Store > turn off App Updates under Automatic Downloads.
🤖 ANDROID
Play Store > Profile > Settings > Network preferences > Auto-update apps > WiFi only.

7. Switch email from "Push" to "Fetch"

"Push" settings keep your phone constantly connected to mail servers, which increases data and battery consumption. Switching to "Fetch" (e.g., every 30 minutes) is much more efficient for travel while still ensuring you receive updates regularly.

🍎 iPHONE
Settings > Mail > Accounts > Fetch New Data > turn off Push > Every 30 Mins.
🤖 ANDROID
Gmail > Profile > Manage accounts > select account > turn off Sync Gmail. (Check manually).

8. Manage Background Data for Social Apps

TikTok, Instagram, and Facebook refresh feeds and preload videos in the background even when closed. Restricting mobile data for these apps prevents this background consumption, ensuring they only use data when you choose to open them.

🍎 iPHONE
Settings > Mobile Data > scroll down and toggle off social apps you don't need on the go.
🤖 ANDROID
Samsung: Settings > Apps > App > Mobile data > turn off Allow background data.

9. Configure Streaming Quality Caps

Streaming apps default to the best quality your connection allows. Manually setting Netflix, YouTube, and Spotify to "Low" ensures a quick video doesn't eat through your entire day's allowance.

🍎 iPHONE
Open App Settings > Cellular Data > Low/Data Saver. Disable cellular downloads.
🤖 ANDROID
Open App Settings > Data Quality > Low/Data Saver. Disable cellular downloads.
DOWNLOAD BEFORE YOU GO

10. Download Offline Maps

Google Maps uses a lot of data to load tiles as you move. By downloading your destination map at home, GPS navigation will work perfectly even if you turn your data off completely.

🍎 iPHONE
Google Maps > Search city > tap name > 3-dots > Download offline map.
🤖 ANDROID
Google Maps > Profile > Offline maps > Select own map > Download.

When you land: how roaming works

The moment you turn off Airplane Mode, your phone automatically connects to the strongest network in StarHub's partner area. On 5G Unlimited+ Plans, roaming is built-in, no activation, no travel eSIMs and no hidden fees.

UNINTERRUPTED CONNECTIVITY

⚡ SEAMLESS ROAMING

Stay connected the moment you land. StarHub links you to local networks without manual activation or swapping SIM cards.

🛡️ PEACE OF MIND

Calls and data are already paid for. If your data runs out, it simply pauses—zero bill shock.

✈️ Check your covered destinations
See full list →

Unlimited+ Plans cover up to 165 destinations across SEA, APAC, and Global tiers. Check the list before you fly to ensure you're covered.

In what order is your roaming data used?

01

Expiry date first

Whichever expires sooner is used first. Add-ons purchased ahead of a trip are used before your monthly plan data if their expiry date is earlier.

02

Built-in before add-on

When expiry dates are the same, built-in plan data is deducted first. Add-on data is held in reserve until your built-in allowance is gone.

03

Most specific region first

Data is drawn from the pool most localised to you: SEA first, then APAC, then Global. This leaves your Global pool available for trips further afield.

💡 Example: Thailand then Japan

On an Unlimited+ Plus Plan (10GB APAC / 5GB Global) in Thailand, your SEA data is used first, followed by APAC. When you fly to Japan, your APAC pool continues. Your 5GB Global pool stays untouched and ready for a future trip to Europe or the US.

What happens when your roaming data runs low?

✓ Your data simply pauses when it runs out

Once your allowance is used, data stops. There are no per-MB charges and no overages. You will not come home to an unexpected bill.

✓ Calls and SMS continue even after data runs out

Roaming calls and SMS are unlimited on all Unlimited+ Plans across 165 destinations. Running out of data does not affect your ability to call or receive calls. Your Singapore number stays reachable throughout your trip.

✓ Top up in seconds from anywhere overseas

You will receive SMS alerts when your data is running low. If you need more data before your plan renews for the month, open the StarHub app, buy an add-on pack, and your data resumes.

SEA add-on: $5 for 5GB. APAC add-on: $10 for 10GB across 20 destinations. Global add-on: $15 for 15GB across 165 destinations.

💡 What this means in practice

You only use data you have already paid for. StarHub cannot charge you for unexpected roaming usage. If your data runs out, buy a top-up and you are back online.

Frequently Asked Questions

Q Does enabling Low Data Mode affect calls or SMS while roaming?

No. Low Data Mode restricts background data processes only. Calls and SMS work normally regardless of whether Low Data Mode is switched on.

Q What happens if I run out of roaming data on an Unlimited+ Plan?

Your data pauses immediately. There are no per-megabyte charges after your allowance is used. Calls and SMS continue normally. Roaming calls and SMS are unlimited on all Unlimited+ Plans regardless of your data balance. To resume data, open the StarHub app, buy an add-on pack, and your data resumes.

Q Does checking my data balance in the StarHub app use my roaming data?

No. Checking your balance in the StarHub app does not consume your roaming allowance.

Q Do I need to switch networks manually when I arrive overseas?

No. Set your network selection to Automatic and your phone connects to the strongest available StarHub partner network on its own. No manual carrier selection needed.

Q Can I buy roaming data add-ons while I am already overseas?

Yes. Open the StarHub app from anywhere overseas to purchase additional roaming data. Your service resumes as soon as the purchase is confirmed.

Ready to Travel Worry-free?

Staying connected overseas no longer requires jumping through hoops. By understanding what data roaming is and how to manage it, you can move across borders with the confidence that your maps, banking apps, and messages will work the moment you land.

SEA TRAVELLER

Unlimited+ Core: $38/mth

Unlimited local data, 5GB SEA + 3GB Global roaming data, unlimited roaming calls & SMS.

APAC TRAVELLER

Unlimited+ Plus: $48/mth

Unlimited local data, 10GB APAC + 5GB Global roaming data, unlimited roaming calls & SMS.

GLOBAL TRAVELLER

Unlimited+ Max: $78/mth

Unlimited local data, 20GB Global roaming data, unlimited roaming calls & SMS across 165+ destinations.

View Unlimited+ Plans

 

Disclaimer:
This content is provided for general information and convenience. While we take care in preparing our articles, readers should refer to official sources or professional advice for specific, up-to-date details.

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