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 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 – Cheapest vs Premium Plans

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 for Light, Medium & Heavy 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.

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

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.

Add-Ons & Extras – What Perks Come Included?

Modern users want more than just calls and data. Perks like ChatGPT access, lifestyle vouchers, or data banking can make or break a plan.

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

Customer Satisfaction & Reviews

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.

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.

Which SIM-Only Plans Let You Change or Pause Easily?

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.

eSIM Support: Who Offers It and Why It Matters

The rise of eSIM (embedded SIM) means you can now activate a mobile plan without needing a physical SIM card—perfect for dual-SIM phones, frequent travelers, or users who want instant activation. Most major providers in Singapore now offer eSIM options:

• Circles.Life: Instant eSIM activation via app (iOS + Android supported)

• Singtel: eSIM available, but requires in-store or portal activation

• M1: Offers eSIM but may charge extra for provisioning

• Gomo, Giga: Some eSIM support but varies by phone model

eSIM is especially useful for:

• Users with newer iPhones and Android devices

• Travelers who want to use local data without swapping SIMs

• Business users who want two numbers on one phone

Always check if your phone is eSIM-compatible and whether your telco supports instant eSIM setup.

Family-Friendly SIM-Only Plans in Singapore

If you’re shopping for multiple family members, a provider that supports multi-line discounts, referral benefits, or shared data can help you save even more.

• Circles.Life: Offers stackable referral rewards—you get up to $30 off per new sign-up, and the person you refer also gets $30 in credits.

• StarHub: Offers multi-line discounts but requires you to be on a postpaid base plan.

• Singtel: No direct SIM-only family bundles, but roaming and entertainment add-ons benefit shared use.

Right now, Circles.Life's referral program and Marketplace vouchers make it ideal for families looking to reduce bills together—especially with perks like ride-hailing discounts and food delivery savings.

Which SIM-Only Plan is Best for Expats or Short-Term Visitors?

Expats, digital nomads, and short-term workers often don’t want to sign multi-year mobile contracts. SIM-only plans are perfect for these users, especially those offering eSIM, roaming, and contract-free sign-up.

Here’s what to look for:

• Contract-free: Avoid plans that require 12-month commitments

• Instant activation: Choose providers with eSIM support for same-day setup

• Roaming data: Especially important for those who travel frequently across Southeast Asia

Circles.Life is ideal for this group—it offers generous local and roaming data (8GB/month to 7 countries), no contract, and immediate eSIM activation. Gomo and Giga also offer flexibility, but roaming data is often limited or expires quickly.

Where to Find SIM-Only Deals and Compare Them Easily

To compare SIM-only plans quickly, use aggregator platforms like:

• Singsaver: Offers detailed feature comparisons

• Weiwei.sg: Interactive filters by data, price, and perks

• MoneySmart Blog: Monthly updates on new SIM-only promotions

But remember: some telcos like Circles.Life offer exclusive perks only via their own app or site—such as ChatGPT Plus access, Marketplace vouchers, or referral bonuses. Always check the provider’s direct site for the latest promos.

How to Decide: Choosing Based on Your Lifestyle

If you're still unsure which SIM-only plan is best, try aligning your selection with your lifestyle or usage habits. Here’s a quick lifestyle-based breakdown:

By matching your plan to your usage, you avoid overpaying for unused features and make the most of the benefits each provider offers.

Future Trends in SIM-Only Plans (2025 and Beyond)

Singapore’s telco market is constantly evolving. Here are a few trends you can expect in SIM-only plans over the next year:

1. Bigger data caps at lower prices – With 5G expanding, expect base plans to offer 100GB+ by default.

2. More eSIM adoption – Physical SIMs may become optional for most new phones.

3. AI integrations – Circles.Life already includes GPT-4o access; other telcos may follow with built-in productivity tools.

4. More lifestyle tie-ins – Expect bundles that include not just mobile data but perks like cloud storage, food delivery credits, or streaming platforms.

5. Roaming built-in – As remote work becomes normal, more plans will include regional or global roaming as a standard.

If you're looking for a future-proof plan that already ticks these boxes, Circles.Life is one to watch.

Best SIM-Only Plan Singapore – Our Verdict

For value-driven users, Circles.Life currently offers the best SIM-only plan in Singapore. It combines:

• Industry-leading data limits (350GB for just $15/month)

• Premium extras like ChatGPT Plus and roaming

• A seamless, app-based user experience

• No contract, no surprise fees

Whether you’re working remotely, streaming content, or traveling regionally, Circles.Life covers all the essentials—and then some.

Conclusion: What’s the Best SIM-Only Plan for You?

Choosing the right SIM-only plan in Singapore depends on how much data you need, where you use it, and what extra features matter most to you. While many providers offer similar base prices, the perks, flexibility, and roaming options make a big difference in long-term value.

If you’re looking for the most complete SIM-only experience, Circles.Life leads with:

• Massive data (350GB/month)

• True contract-free plans

• Built-in perks like ChatGPT Plus (worth $26/mo)

• Roaming access across 7 countries

• App-based controls and vouchers

Whether you're after the cheapest SIM-only plan in Singapore, the most flexible option, or a plan with international coverage, this guide has helped you compare and choose with confidence.

Start Comparing SIM-Only Plans Today

• Looking for the cheapest SIM-only plan in Singapore?

• Want a plan with roaming and rewards?

• Need a contract-free 5G plan with bonus tools like ChatGPT?

Check out Circles.Life SIM-Only Plans and see why it’s the smart choice for 2025.