Compare the Best 5G SIM-Only Plans in Singapore (2025)

Choosing the right mobile plan in 2025 is no longer just about price—it’s about performance, flexibility, and finding the best fit for your digital lifestyle. With 5G now widely available across Singapore, SIM-only plans have become the go-to option for users who want value, speed, and control. In this guide, we’ll break down everything you need to know to compare the top 5G SIM-only plans in Singapore and find the best deal for your needs.

Whether you’re after the cheapest 5G plan Singapore offers or wondering what is the best SIM-only plan for your usage habits, we’ve got you covered.

What is a SIM-Only Plan?

A SIM-only plan is a mobile subscription that includes only the SIM card and the service—no phone included. These plans are ideal for users who already own a smartphone and want to avoid the high cost of bundled contracts.

By skipping the device subsidy, you often pay significantly less per month. SIM-only plans can be contract-free, giving you more flexibility to switch providers or upgrade anytime. In 2025, SIM-only plans dominate the market, especially among cost-conscious and tech-savvy Singaporeans.

Why 5G SIM-Only Plans Matter in 2025

5G is no longer a future trend—it’s the current standard. With blazing-fast speeds, ultra-low latency, and widespread coverage across Singapore, 5G is now the norm for everything from watching high-definition videos to remote work and cloud gaming.

A 5G SIM-only plan in Singapore ensures your phone runs on the fastest network available, making it easier to stream, game, browse, and video call with zero lag. Whether you’re a student, freelancer, entrepreneur, or digital native, a strong 5G plan enhances your everyday life.

Moreover, with more people using multiple connected devices, a reliable 5G SIM card and plan can support your needs at home and on the go.

How to Pick the Best 5G SIM-Only Plan in Singapore

When it comes to picking the right 5G SIM-only plan, here are six key factors to consider:

1. Data Allowance

Your data usage should guide your plan choice. Light users might be fine with 100GB or less, but streamers, gamers, and digital workers may need upwards of 200GB to stay productive and entertained without worry.

2. Speed Cap

Not all “5G” plans are created equal. Some may cap your speeds even on a 5G network. Look for truly uncapped 5G speeds if performance is critical to you.

3. Roaming Perks

If you travel frequently, choose a plan with free roaming data or affordable roaming packages. Some telcos offer monthly roaming data in popular regions like Southeast Asia, the US, or Europe.

4. Plan Type

Contract-free plans are preferred by those who like freedom and flexibility, while contract plans may bundle in perks like device discounts or streaming services. Decide what suits your lifestyle better.

5. Coverage

While most providers now offer nationwide 5G, some deliver better speeds and stability in certain regions. Check your provider’s coverage map or ask other users in your area for feedback.

6. Extra Benefits

Don’t overlook add-ons. Some plans offer extras like AI-powered assistants, referral rewards, weekend data boosts, or media subscriptions that can significantly increase your plan’s value.

Explore Top 5G SIM-Only Plans from Singapore’s Leading Telcos

Let’s take a closer look at how the major telcos stack up when it comes to 5G SIM-only offerings.

Best 5G SIM-Only Plans – Side-by-Side Comparison

Last updated: June 2025

Best 5G SIM-Only Plans for Light Data Users in Singapore

Ideal for: Young children, elderly parents, or work phones used mainly for messages, calls, and light browsing.

If you don’t stream or game much, you don’t need to pay extra for data you won’t use. These plans are also great for second phones or IoT devices that just need basic connectivity.

For users asking what is the cheapest 5G plan Singapore offers, SIMBA’s $10 plan is a strong contender, though Circles.Life offers more bang for your buck in terms of speed and perks.

Best 5G SIM-Only Plans for Moderate Data Users

Ideal for: Teens, students, and casual users who scroll social media, watch occasional videos, and stay connected.

These plans strike a balance between affordability and data volume, often including roaming and extras for a richer experience.

All three plans are contract-free, giving users more control and the ability to cancel or switch as needed.

Best 5G SIM-Only Plans for Heavy Data Users

Ideal for: Gamers, streamers, content creators, and remote workers with always-on digital demands.

For users asking what is the best SIM-only plan in Singapore for data-heavy use, these plans provide huge data caps with premium extras and no throttling.

Singtel’s plan includes bundled services like Disney+ and Spotify, while Circles.Life appeals with AI tools and no contract.

Steps to Activate a 5G SIM-Only Plan in Singapore

• Check 5G Compatibility: Your device must support 5G bands used in Singapore.

• Compare Plans: Choose a provider that matches your budget and usage needs.

• Order SIM: Most telcos let you order online with free delivery.

• Insert SIM Card: Once received, place it in your device.

• Activate Service: Follow the provider’s activation instructions or app.

• Enjoy 5G Speeds: Start browsing, streaming, and gaming with next-gen speeds.

If you’re switching from a postpaid contract, ensure your number porting is completed before activation.

Contract-Free vs Contract 5G Plans: Which is Better?

In 2025, the shift toward contract-free plans is clear, especially among digital-first users who prioritize savings and control. But contract plans still have their place for some.

Contract-Free Plans (e.g., Circles.Life, Giga, SIMBA)

• Pros: Cancel anytime, more frequent promos, low commitment

• Cons: No device subsidies, prices may change

Contract Plans (e.g., Singtel, M1)

• Pros: Discounted handsets, streaming bundles, consistent billing

• Cons: Penalties for early exit, less flexible

If you’re wondering whether to choose a contract plan or not, ask yourself: Do you already own a good phone? If yes, contract-free is the smarter route.

Frequently Asked Questions (FAQs) About 5G SIM Plans

What is a SIM-only plan and why choose it in Singapore?

A SIM-only plan in Singapore offers cost savings and flexibility by providing mobile service without bundling a new device.

Which is the best 5G SIM-only plan in Singapore in 2025?

Circles.Life currently offers the best 5G SIM-only plan in Singapore with 250GB of data, no contract, and added benefits like CirclesAI.

What is the cheapest 5G plan in Singapore right now?

SIMBA’s $10 5G SIM-only plan is the cheapest in Singapore, offering 100GB of data and basic connectivity without any contract.

What are the benefits of a Singtel 5G SIM-only plan?

A Singtel 5G SIM-only plan offers premium add-ons like Disney+ and McAfee, 200GB of data, and some roaming support with a 12-month contract.

Do I need a special 5G SIM card for these plans?

Yes, to access a 5G plan in Singapore, you need a 5G-compatible SIM card and device to ensure full-speed connectivity.

Final Thoughts

Choosing the best 5G SIM-only plan in Singapore depends on your lifestyle, data needs, and how much flexibility you want. In 2025, contract-free plans dominate for good reason—they offer freedom to switch anytime, generous data, and perks like AI tools or roaming without locking you into long commitments. Providers like Circles.Life, Giga, and SIMBA stand out for delivering high value at low prices, while traditional telcos like Singtel and M1 still appeal to users who want bundled entertainment or device financing.

No matter your usage level, the right plan should offer speed, reliability, and great value. Whether you’re a light user checking emails or a power user streaming and gaming on the go, there’s a 5G SIM-only plan tailored to your needs. Take time to review your data habits, compare what's on offer, and don’t be afraid to switch if your current plan no longer serves you—especially now that contract-free switching is easier than ever.