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What are the Best SIM-Only Plans for Heavy Data Users in Singapore?

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Updated on 5 Nov 2025

If you are a heavy mobile data user, you need SIM plan recommendations with generous monthly caps so you never run out of data. We’ve rounded up the best 5G SIM plans from various providers in Singapore, focusing on data capacity, price-to-data value and other data management features useful for heavy users.

Here is a quick table comparison of the best SIM-only plans for heavy data users in Singapore, with various options for different data caps and prices depending on your needs and budget.

The standout contender in this list is the Maxx 5G plan, which offers a robust 500GB of data shared across Singapore, Malaysia, and Indonesia for just S$12/month. Other options include the eight 5G plan for 688GB of data for a slightly higher price of $18/mth, and the Singtel Priority Ultra Plan for users looking for unlimited data with no caps at $80/mth.

Provider and Plan Data Capacity Other Features Price
Maxx 5G 500GB (Singapore, Malaysia, Indonesia)

20GB APAC Roaming

7GB International Roaming
Up to 600 IDD Mins

500 Mins Local Outgoing Calls

Unlimited Local Incoming Calls

50 Local SMS

Free Caller Number Display

Free SIM Card and Delivery
$12/mth
Circles.life 5G 800GB

12GB Roaming in Selected Countries
Unlimited Incoming and Outgoing Local Calls

Free Caller ID

Access to movie tickets at $10

Free AI bundle powered by the latest paid models like OpenAI GPT-5 and more.
$18/mth
giga! 5G 500GB (Singapore and Malaysia)

12GB Asia Roaming

10GB International Roaming
1000 Mins Local Outgoing Calls

1,000 Local SMS

Free Rollover Data

Free Caller ID
$20.37/mth
SIMBA 5G 500GB (Singapore, Malaysia, Indonesia, Thailand, HK)

18GB APAC Roaming

8GB International Roaming
Up to 600 IDD Mins and Local Outgoing Call Mins

100 Local SMS
$12/mth
eight 5G 688GB (Singapore, Malaysia, Indonesia, Thailand)

36GB APAC Roaming

18GB International Roaming
Up to 488 IDD Mins

888 Mins Local Talktime

128 Local SMS
$18/mth
MyRepublic 5G 800GB Local Data

15GB Roaming (Malaysia/Indonesia/Thailand)

4GB International Roaming
1,400 Mins Local Talktime

1,400 Local SMS
$19.95/mth
M1 Bespoke SIM-Only 5G 1TB Local Data 1,000 Mins Talktime

1,000 SMS

Free 12 Months Unlimited Weekend Data
$17.95/mth
Singtel Priority Ultra 5G Unlimited Local Data

50GB Malaysia Roaming

6GB Asia Roaming
1,500 Mins Talktime

1,500 SMS

Caller ID

12 months of Disney+ Premium

12 months of HBO Max Standard
$80/mth

What is a Heavy Data User in Singapore?

A heavy data user is generally defined as an individual who consumes 50GB to 200GB of mobile data or more per month. Individuals might use a lot of data because they frequently stream high-definition or 4K video, download large files, or are a frequent user of data-intensive applications like online gaming or video conferencing.

While official figures on the average mobile data usage for each Singaporean is unavailable, we can extrapolate. In Q4 of 2024, the average total mobile data usage in Singapore was 96 petabytes per month. Assuming that this is shared amongst Singapore’s 6 million population, that means each user uses 16 gigabytes of data each month.

SIM plan recommendations for heavy data users are generally those with higher data caps to provide enough buffer room for unexpected spikes in usage.

Who are Most Likely to Be Heavy Data Users in Singapore?

Heavy data users in Singapore are likely to come from the following groups:

  • Mobile Gamers: Playing data-intensive mobile games like Genshin Impact or Call of Duty Mobile, especially when downloading large updates or streaming competitive play.
  • 4K/High-Res Streamers: Watching Ultra HD video content (4K Netflix, YouTube) on the go or using mobile data to power a home streaming setup via hotspot.
  • Remote Workers and Students: Constantly attending long video calls (Zoom, Teams), downloading large files, and using mobile tethering as a primary or backup internet source for a laptop.
  • Cloud Power Users: Synchronising massive photo libraries, video files, or large documents to cloud services like Google Drive or Dropbox over the mobile network.
  • Social Media Creators: Uploading high-resolution videos and frequent live-streaming sessions on platforms like TikTok and Instagram.

How Much Mobile Data Do Data-Intensive Activities Use?

Understanding how much data each activity consumes highlights why the best SIM-only plan for heavy data users is generally 500GB or more. While mobile gaming uses a moderate amount of data, high-resolution streaming and using your phone as a home internet replacement via tethering will quickly burn through several hundred gigabytes monthly.

Activity Typical Data Consumption Rate Estimated Monthly Usage (at 4 hours/day)
4K Video Streaming (Netflix/YouTube) 7GB - 11GB per hour 840GB - 1.3 TB
HD Video Streaming (1080p) 2GB - 3GB per hour 240GB - 360 GB
Mobile Gaming (E.g., PUBG, CoD) 50MB - 150MB per hour 6GB - 18 GB
Cloud Gaming / PC Tethering 3GB - 10GB per hour 360GB - 1.2 TB
High-Quality Video Call (Zoom/Teams) 1GB per hour 120GB

Best SIM-Only Plans for Heavy Data Users with 500GB - 800GB of Data

This range represents the "sweet spot" where you get generous data volumes for a comparatively low price. The best SIM-only plan in this category is the Maxx 5G plan, which stands out as the clear value winner, offering a generous 500GB of data shared across Singapore, Malaysia, and Indonesia for just S$12/month. It even includes higher than average data caps for APAC and International roaming compared to the competition.

Provider and Plan Data Capacity Other Features Price
Maxx 5G 500GB (Singapore, Malaysia, Indonesia)

20GB APAC Roaming

7GB International Roaming
Up to 600 IDD Mins

500 Mins Local Outgoing Calls

Unlimited Local Incoming Calls

50 Local SMS

Free Caller Number Display

Free SIM Card and Delivery
$12/mth
Circles.life 5G 800GB

12GB Roaming in Selected Countries
Unlimited Incoming and Outgoing Local Calls

Free Caller ID

Access to movie tickets at $10

Free AI bundle powered by the latest paid models like OpenAI GPT-5 and more.
$18/mth
giga! 5G 500GB (Singapore and Malaysia)

12GB Asia Roaming

10GB International Roaming
1000 Mins Local Outgoing Calls

1,000 Local SMS

Free Rollover Data

Free Caller ID
$20.37/mth
SIMBA 5G 500GB (Singapore, Malaysia, Indonesia, Thailand, HK)

18GB APAC Roaming

8GB International Roaming
Up to 600 IDD Mins and Local Outgoing Call Mins

100 Local SMS
$12/mth
eight 5G 688GB (Singapore, Malaysia, Indonesia, Thailand)

36GB APAC Roaming

18GB International Roaming
Up to 488 IDD Mins

888 Mins Local Talktime

128 Local SMS
$18/mth
MyRepublic 5G 800GB Local Data

15GB Roaming (Malaysia/Indonesia/Thailand)

4GB International Roaming
1,400 Mins Local Talktime

1,400 Local SMS
$19.95/mth

Best SIM-Only Plans for Heavy Data Users with 900GB to 1TB+ of Data

For heavy data consumers who require the absolute highest capacity, M1 offers the best 5G SIM plan that is the most affordable: 1TB of local data for $17.95/mth. Meanwhile, Singtel’s Priority Ultra 5G is the best SIM-only plan If you require unlimited local data, although that comes in at a hefty $80/mth.

Provider and Plan Data Capacity Other Features Price
Singtel Priority Ultra 5G Unlimited Local Data

50GB Malaysia Roaming

6GB Asia Roaming
1,500 Mins Talktime

1,500 SMS

Caller ID

12 months of Disney+ Premium

12 months of HBO Max Standard
$80/mth
M1 Bespoke SIM-Only 5G 1TB Local Data 1,000 Mins Talktime

1,000 SMS

Free 12 Months Unlimited Weekend Data
$17.95/mth
giga! 5G 1TB (Singapore and Malaysia)

12GB Asia Roaming

10GB International Roaming
1,500 Call Mins

1,500 SMS

Free Rollover Data

Free Caller ID
$28/mth
Circles.life 5G 1TB

15GB Roaming in Selected Countries
Unlimited Incoming and Outgoing Local Calls

Free Caller ID

Access to movie tickets at $10

Free AI bundle powered by the latest paid models like OpenAI GPT-5 and more.
$22/mth

Besides Data Capacity, What Should Heavy Data Users Look For in a SIM-Only Plan?

Heavy data users need larger data allowances to create a buffer for high-bandwidth activities, but they should also consider factors such as speed, network stability, data rollover, and international connectivity that affect the internet experience.

  • 5G Network: Make sure your plan runs on the 5G network, which delivers up to 20Gbps data rates, making it significantly faster than 4G. This will ensure high-bandwidth activities like 4K streaming or low latency mobile gaming run smoothly.
  • Network Stability and Speed: MVNOs rent infrastructure from the main MNOs in Singapore (Singtel, StarHub and M1). Check which underlying network your chosen plan runs on and make sure you have strong coverage in the areas you frequent.
  • Data Rollovers or Free Weekends: Data rollovers allow you to save unused data to count towards your usage for the next billing cycle. This can be a useful feature if you need an additional buffer. Other features like free data on weekends can also help you save on data usage.
  • Roaming Perks: If you are a cross-border commuter or travel frequently to countries like Malaysia or Indonesia, look for SIM-only plans like those from Maxx which bundle roaming for certain countries as part of your local data capacity. This is not only convenient, but can be cheaper in the long run as you don’t have to buy a separate travel mobile data plan each time.

Summary: What are the Best SIM-Only Plans for Heavy Data Users in Singapore?

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If you’re a heavy data user asking the question: Which is the best SIM-only plan to buy in Singapore, consider these top three picks based on your specific needs:

  • If you want the best value: Go for the Maxx 5G 500GB Plan at S$12/mth. It offers a generous 500GB of shared data across Singapore, Malaysia, and Indonesia for the lowest price point among top-tier heavy-user plans.
  • If you want the highest raw data capacity for the lowest monthly cost: Go for the M1 Bespoke SIM-Only 5G 1TB Plan at S$17.95. It is currently the most affordable 1TB plan, offering exceptional value and free unlimited weekend data for a year.
  • If you want flexibility in how you manage your data: The giga! 1TB 5G Plan at $28.00/mth has a generous 1TB cap and data rollover feature, meaning you can binge freely without ever worrying about throttling or extra charges.

faq FAQs About SIM Only Plans for Heavy Data Users

Is 4G still adequate for a heavy data user, or is 5G necessary?

While 4G can handle basic HD streaming, 5G is necessary for heavy data users who engage in high-demand activities like 4K streaming, cloud gaming, and mobile tethering. 5G offers superior speed, but more importantly, lower latency and greater network stability, which prevent frustrating buffering and lag.

Are "unlimited data" plans truly unlimited in Singapore?

The term "unlimited" usually comes with a Fair Usage Policy (FUP). For most top-tier SIM-only plans, the FUP is extremely high, often set at 800GB or 1TB of high-speed data per month. Once you exceed this cap, your speed is typically throttled to a slower speed for the remainder of the month.

Can I port my existing number if I sign up for a SIM-only plan?

Yes, you have the option to port over your existing number if you sign up for a SIM-only plan. The porting process typically takes 1 to 3 working days and you will be given a temporary number to use until the porting is complete.

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International Roaming
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Devices that support 5G

Brand Model name
Apple
  • iPhone 13 series or newer
  • iPhone SE (3rd gen) or newer
  • iPad Air (5th gen) or newer
  • iPad (10th gen) or newer
  • iPad Pro 11” (4th gen) / iPad Pro 12.9” (6th gen) or newer
  • iPad Mini (6th gen) or newer
Samsung
  • Galaxy S21 5G / S21+ 5G / S21 Ultra 5G / S21 FE 5G or newer
  • Galaxy Z Fold3 5G / Flip3 5G or newer
  • Galaxy A13 5G / A23 5G / A33 5G / A52s 5G or newer
  • Tab S8 5G / Tab S8+ 5G / Tab S8 Ultra 5G or newer
Nothing
  • Phone (1) 5G or newer
  • CMF by Nothing Phone 1 or newer

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