Best Unlimited Data Plan in Singapore: Compare & Choose

Unlimited data plans in Singapore have become more than a convenience — they’re a necessity. From remote work and online meetings to streaming Netflix on the go, mobile gaming, and video calls with family abroad, data demands have skyrocketed. With average users consuming upwards of 15–25GB per month, and heavy streamers or cloud gamers easily crossing 100GB, traditional capped data plans are often not enough.

That’s why unlimited data phone plans and data-only SIMs are in high demand. Whether you’re looking for the cheapest phone plans with unlimited data, the best 5G data-only plan in Singapore, or just a simple data only SIM for travel, there’s now a wide variety of options on the market. Some focus on affordability, others on blazing-fast 5G performance, while premium plans bundle in perks like roaming and rollover data.

In this guide, we’ll break down the best unlimited data plans in Singapore for 2025, comparing 4G and 5G, prepaid and SIM-only options, and even regional choices in Malaysia, Thailand, Indonesia, and Europe. The goal: help you choose the plan that delivers the most value for your lifestyle and budget.

What Is an Unlimited Data Plan?

An unlimited data plan in Singapore typically means you can use your phone or SIM without worrying about hitting a hard data cap. But there’s a catch: most providers operate under a Fair Usage Policy (FUP). This means that after you’ve consumed a certain threshold (say 20GB per day on 4G, 300GB per month on 5G, or even 500GB in some cases) your speeds may be throttled to a much lower level. You’ll still stay connected, but streaming HD video or gaming may become difficult once throttling kicks in.

Here’s what “unlimited” usually covers:

• Unlimited data: Full-speed 4G or 5G up to a cap, then reduced speeds.

• Unlimited calls & SMS: Most unlimited data mobile plans bundle in thousands of minutes and texts, although messaging apps like WhatsApp have made SMS less relevant.

• Hotspot & tethering: Many telcos allow you to use your unlimited data for personal hotspot sharing, perfect for remote work on a laptop.

• Roaming add-ons: Some providers include overseas data roaming (e.g., Malaysia, Asia-Pacific, or Europe) at no extra charge or at discounted rates.

The takeaway: unlimited data plans in Singapore aren’t always truly unlimited, but they do give you the peace of mind to stream, work, and browse without racking up costly excess data charges.

Why Choose an Unlimited Data Plan?

For many users in Singapore, a standard mobile plan with 30GB or even 100GB of data simply isn’t enough anymore. Unlimited data phone plans and data-only SIMs are attractive because they remove the guesswork. Instead of worrying about running out of data halfway through the month, you can focus on what matters: staying connected.

Here’s why Singaporeans are turning to unlimited data plans in 2025:

• No worries about data caps: Stream Netflix, scroll TikTok, or play mobile games without constantly checking your usage.

• Ideal for heavy users: Remote workers, students, and digital nomads who rely on hotspot sharing can power multiple devices without disruption.

• Predictable monthly costs: No hidden charges for exceeding your allowance — just one flat fee.

• Flexibility: From prepaid unlimited data SIM cards to contract-free SIM-only plans, users can switch or cancel without penalties.

• High-speed connectivity: Both best unlimited 4G data plans and 5G unlimited data plans offer fast speeds, with 5G particularly suited for low-latency gaming and 4K video streaming.

• Multi-device convenience: Perfect for those who juggle smartphones, tablets, and portable Wi-Fi routers.

In short, unlimited data is less about luxury now and more about meeting the realities of modern digital life.

Compare Unlimited Data Mobile Plans by Providers in Singapore

To help you find the best unlimited data plan in Singapore, here’s an updated comparison of major telcos and what they offer in 2025. This table shows the cost, data policies, calls/SMS, and roaming perks across different providers.

This comparison makes it clear: budget-conscious users will gravitate toward MyRepublic or GOMO, while heavy 5G users may prefer Circles.Life or CMLink SG for their higher caps and rollover perks. Singtel’s premium options are still available, but the higher price tag makes them less attractive compared to newer SIM-only providers.

Best Unlimited 4G Data Plans in Singapore

Even as 5G expands, unlimited 4G data plans remain popular for their affordability and reliability. For many users, especially those who don’t need ultra-low latency, 4G provides more than enough speed for video streaming, social media, and hotspot use. If you’re searching for the cheapest phone plans with unlimited data, these 4G options should be your starting point.

For day-to-day users, MyRepublic is the most reliable 4G unlimited choice with generous call/SMS bundles.

Top Unlimited 5G Data-Only Plans for Heavy Users

Heavy streamers, mobile gamers, and professionals who rely on hotspot tethering will find 5G plans hard to beat. With faster speeds, lower latency, and bigger fair-use allowances, these are the best unlimited 5G data-only SIMs available in Singapore today.

Verdict: If you’re after speed and regional flexibility, GOMO’s 5G+ Asia Infinity is unbeatable thanks to its massive roaming perks. For pure high-capacity use, Circles.Life offers the unique advantage of rolling over up to 1TB of unused high-speed data that’s perfect for users who alternate between heavy and light months. CMLink provides strong value with 500GB before throttling, making it ideal for those balancing local and overseas usage.

Cheapest Unlimited Data Plans in Singapore

Not every user needs premium roaming or rollover perks. For students, light users, or those who just want a steady connection without overspending, the cheapest unlimited data phone plans in Singapore deliver great value. These options focus on keeping monthly bills low while still offering peace of mind with unlimited use.

Verdict: The cheaper option is MyRepublic, with enough data for budget-conscious users. GOMO’s Infinity Plan costs slightly more but provides 5G and roaming perks, making it the most cost-effective upgrade for those who want better speed and coverage.

Unlimited Data Plans Beyond Singapore

For frequent travelers, having unlimited data abroad is just as important as at home. Relying on roaming add-ons from Singaporean telcos can get expensive, so many choose local unlimited SIMs or regional data-only plans. These give better value for navigation, remote work, streaming, and staying connected on the move.

Today, travelers often compare unlimited data SIMs in Malaysia, Thailand, Indonesia, and Europe — four of the most common destinations for Singaporeans. Below is a breakdown of the best unlimited mobile data plans by country.

Best Unlimited Mobile Data Plan for Malaysia

Verdict: Digi Prepaid 5G UV 40 is the most flexible option for short-term visitors who use tethering, while Hotlink is ideal for streaming and browsing thanks to its higher speed cap.

Best Unlimited Data Plan for Thailand

Verdict: Both AIS and TrueMove H Tourist SIM options deliver nearly identical value at the same price point, so the choice largely comes down to network preference and coverage in the areas you plan to travel.

Best Unlimited Data Plan for Indonesia

Verdict: XL Prioritas Platinum offers better value with a higher 60GB fair-use cap before throttling, while Telkomsel is still a solid choice for users who prioritize Telkomsel’s wider and reliable coverage.

Best Unlimited Data Plan for Europe

Verdict: For long-stay travelers or those hopping across multiple EU countries, Vodafone Unlimited Plus Extra Euro Roam is the stronger choice with roaming across 51 European destinations, but the Orange Travel eSIM remains a good option for light data users who place a premium on stronger speeds.

How to Choose the Right Unlimited Data Plan/SIM

With so many unlimited data plans in Singapore on offer, the challenge isn’t finding one. It’s choosing the right fit for your needs. Not every plan suits every lifestyle, so consider these factors before you commit:

• Usage Habits: If you mainly scroll social media and watch short videos, a budget 4G unlimited data SIM like Zero1 or MyRepublic may suffice. For streaming in HD, gaming, or tethering multiple devices, go with a 5G unlimited data plan.

• Budget: The cheapest unlimited phone plans cost under $25/month, while premium 5G unlimited options can climb past $40/month. Factor in whether you actually use the perks (like rollover or roaming) before paying extra.

• Device Compatibility: Older smartphones may not support 5G. If your device is 4G-only, stick with affordable unlimited 4G SIM-only plans instead of paying for unused speed.

• Roaming Needs: Frequent travelers should prioritize plans with roaming perks (like GOMO 5G+ Asia Infinity). Otherwise, consider getting local unlimited SIMs abroad, which often work out cheaper than Singapore roaming add-ons.

• Contract vs. No Contract: SIM-only and prepaid unlimited data SIMs in Singapore are typically contract-free, giving you flexibility. Big telcos like Singtel may lock you into 24 months, but throw in phone subsidies.

Pro Tip: Always check the Fair Usage Policy (FUP). Unlimited doesn’t mean infinite high-speed data. If your monthly consumption regularly crosses 300GB, only providers like Circles.Life (1TB rollover) or CMLink SG (500GB before throttling) will meet your needs.

Why Choose Circles.Life for Unlimited Data Plans?

Among Singapore’s SIM-only providers, Circles.Life has carved out a reputation as one of the most flexible and value-driven options for unlimited data. Here’s why many users prefer it over traditional telcos:

• 1TB Rollover Advantage: Unlike other providers that throttle you after a fixed monthly cap, Circles.Life lets you roll over unused full-speed 5G data up to 1 terabyte. This is unmatched in the market, especially for users who alternate between light and heavy months.

• Transparent Pricing: Circles.Life’s unlimited data plan Singapore pricing is straightforward, with no hidden excess charges. You get exactly what you pay for.

• Unlimited Talktime: While many SIM-only players skimp on calls, Circles.Life includes unlimited minutes, which is useful for users who still rely on traditional calls for work.

• No Contracts: Unlike Singtel or StarHub’s locked-in plans, Circles.Life remains contract-free, making it easy to switch or cancel anytime.

• Digital-First Experience: From sign-up to billing, everything is app-based. You don’t need to queue at a store. Activation takes just minutes.

In short, Circles.Life isn’t just competing on price. It’s competing on flexibility, transparency, and customer experience, which is why it’s often highlighted as one of the best unlimited data SIM-only plans in Singapore.

Steps to Activate Circles.Life Unlimited Data Plans

Getting started with Circles.Life is designed to be quick and hassle-free. You don’t need to visit a physical store or deal with lengthy contracts. Here’s how to activate your Circles.Life unlimited data SIM:

1. Choose Your Plan Online
   Visit the Circles.Life website or app and select the unlimited data plan Singapore option that best fits your needs (4G or 5G, prepaid or SIM-only).

2. Complete Sign-Up
   Enter your details, upload your NRIC or FIN for verification, and pick whether you want a new number or to port your existing one.

3. Delivery or eSIM
   Choose between a physical SIM card (delivered to your address) or an instant eSIM activation if your device supports it.

4. Activate in Minutes
   Once you receive your SIM or eSIM QR code, follow the setup instructions in the Circles.Life app. Most users are live within minutes.

5. Manage Everything via App
   From tracking data usage to upgrading add-ons, all account management happens in the app — no queues, no paperwork.

Tip: If you’re opting for eSIM, ensure your device supports it. Circles.Life is compatible with most modern Apple, Samsung, and Google phones.