Your Guide to Comparing SIM-Only Plans in Singapore (2025 Updated)

The popularity of SIM-only mobile plans in Singapore has soared in recent years, and it's easy to see why. With so many providers offering contract-free, data-rich plans at competitive prices, users are no longer tied to rigid contracts or expensive handset bundles. In this 2025 comparison guide, we explore the best SIM-only plans in Singapore from light users to data-hungry streamers—and help you decide which plan offers the most value for your budget and lifestyle.

Whether you’re a student looking for an affordable data plan, a business traveler in need of roaming options, or just someone who wants more control over your monthly bill, this is your ultimate comparison of SIM-only plans across major telcos and MVNOs.

What is a SIM-Only Plan?

A SIM-only plan is a mobile subscription that provides a SIM card with call, SMS, and data services—without bundling a handset. Instead of paying monthly installments for a new phone, users pay only for the mobile service, which drastically reduces the overall cost.

How SIM-Only Plans Work

SIM-only plans work on a simple model. Once you sign up, you receive a SIM card (or eSIM) from the provider, which you can insert into your existing phone. Many plans are contract-free, allowing users to cancel or switch providers at any time. These plans are available through major telcos like Singtel, StarHub, and M1, as well as virtual operators like Circles.Life, Gomo, Giga, and more.

Benefits Of SIM-ONLY Plans Over Traditional Mobile Contracts

SIM-only plans offer several advantages:

• Lower cost: No handset repayments = significantly cheaper monthly bills.

• Flexibility: Most plans are no contract, giving you the freedom to change anytime.

• Data-rich options: SIM-only providers often offer larger data bundles than contract plans.

• Roaming and perks: Many include roaming, data banking, or app-based loyalty rewards.

Whether you're a savvy shopper or a frequent traveler, SIM-only plans can often deliver more value and less commitment.

Key Factors to Compare SIM-Only Plans in Singapore

When doing a sim only plan comparison, it’s important to evaluate more than just price. Here are the key categories that determine the best SIM-only plans for different needs:

• Price 

• Data Allowance:

• Talk Time and SMS:

• Roaming:

• Promotions and Discounts:(Add-Ons)

• Network Coverage & Speed

Price: SIM-ONLY Plan Price Comparison

When doing a sim only plan comparison, it’s important to evaluate more than just price. Here are the key categories that determine the best SIM-only plans for different needs:

Cheapest vs Premium SIM-Only Plans in Singapore

SIM-only plans range from budget-friendly options under $10 to premium plans with ultra-high data and perks. Your choice should depend on your average usage and flexibility needs.

Circles.Life stands out in the budget segment with 350GB for just $15/month (for 3 months), making it one of the cheapest SIM-only plans in Singapore by data value.

Data Allowance: Best Data SIM-ONLY in Singapore

Compare SIM-Only Plans for Light, Moderate & Heavy Data Users

Your average monthly data usage should guide your plan selection.

Below is a sim only data plan comparison:

Circles.Life, with up to 350GB, offers unmatched value for streamers, gamers, and mobile-first users.

Top SIM-Only Network Providers for Speed & Coverage in Singapore

Network Coverage & Speed

While many MVNOs lease their network from Singtel, StarHub, or M1, the performance still varies depending on optimization.

If speed is critical for your usage (e.g. gaming or video calls), Singtel and Circles.Life lead in coverage and performance.

Roaming Options – Best for Frequent Travelers

Compare SIM-Only Plans with Roaming Data for Overseas Travel

Planning to travel frequently? Check whether your SIM-only plan includes roaming data or affordable travel bundles.

Circles.Life offers consistent monthly roaming, making it ideal for regular regional trips.

Sim-only Plans With The Best Add-ons & Perks In Singapore

Modern users want more than just calls and data. Perks like unlimited queries with CirclesAI powered by OpenAI’s latest models, lifestyle vouchers, or data banking can make or break a plan.

Circles.Life’s bonus features provide real, daily-life value—especially its OpenAI integration.

Compare User Ratings of Singapore’s SIM-Only Providers

A great plan is only as good as the support behind it. Customer reviews can reveal a lot about service reliability and post-sale experience.

Circles.Life consistently ranks high for user satisfaction, transparency, and flexibility.

Exclusive Benefit of Circles.Life SIM-Only Plans

Pause or Switch Plans Anytime — No Penalties

One of the best parts about SIM-only plans is the no-contract flexibility—but some providers take it further by letting you pause, downgrade, or switch plans from within their app.

For example, Circles.Life lets you pause your plan for up to 3 months or switch between plans anytime without penalties. This is ideal for seasonal workers, students, or people going overseas temporarily. Giga also allows monthly flexibility, but other providers like M1 may require a minimum period to access promotions.

So if you expect your usage or location to change regularly, choose a provider with in-app plan switching and pause features.

SIM-Only Plans Comparison – Who Offers the Best Value?

Here’s a quick side-by-side comparison of SIM-only plans in Singapore, updated for April 2025:

*Zero1 offers unlimited data at reduced speeds after hitting the cap.

Recommended SIM-Only Plans by User Type & Needs in Singapore

FAQ’s about SIM-Only Plans

Who has the best SIM-only plan?

It depends on what you’re looking for. Circles.Life offers one of the most balanced plans for data, roaming, and flexibility with generous 5G data, no lock-in contracts, and perks like free roaming and AI tools.

Are there SIM-only plans with no activation or hidden fees?

Yes. Circles.Life has no activation fees, no SIM delivery fees, and no hidden charges, what you see is what you pay. Always read the fine print with other providers, as some charge for setup, card delivery, or early termination.

How long does it take to activate a SIM-only plan after signing up?

For most digital-first telcos like Circles.Life, activation is fast. You can typically get your SIM delivered and activated within 1–2 working days, or even instantly if you opt for eSIM. Other providers may take longer or require in-person setup.

How are SIM-only plans different from a contract plan?

SIM-only plans give you more control. There’s no device tie-in, no 12- or 24-month lock-in, and often better value on data and roaming. You’re free to switch, pause, or downgrade your plan anytime, especially with Circles.Life’s in-app tools.

Which telco offers the most flexible SIM-only plans?

Circles.Life stands out for flexibility. You can pause your plan for up to 3 months, switch between plans within the app, or scale up anytime without penalties. Giga also offers monthly flexibility, but others like M1 may have minimum lock-in periods or limitations on promo eligibility.