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SIM-Only vs Contract (Device-Bundled) Plans: Which is Better?

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Updated on 21 Oct 2025

Whether you’re signing up for a new mobile plan or thinking about renewing your old one, one of the most common questions Singaporeans face is this: Is a SIM-only plan better than a contract plan that comes bundled with a device?

The answer isn’t always obvious. Often, it comes down to the details, including data usage, plan flexibility, and device preferences.

SIM-only plans, in particular, have been steadily gaining popularity in Singapore. Without hidden device costs and often with no long-term lock-ins, they give users control over their mobile expenses while still offering generous data allowances.

This guide is designed to save you hours of research by breaking down everything you need to know about SIM-only plans vs contract plans, from key differences and costs, to who each option is best suited for, so you can make an informed choice that fits your lifestyle.

What Is a SIM-Only Plan

A SIM-only plan is a mobile subscription where you only pay for services like data, talk time, and SMS without bundling in a new device. Unlike traditional contracts, where the monthly fee covers both the phone and service, SIM-only users bring their own device or buy one outright.

Where contract plans may have been a mainstay several years ago, today SIM-only plans are gaining popularity, as these plans are often the most affordable mobile data plans in Singapore. The rise of remote and hybrid work, overseas travel, as well as high-data streaming and gaming, also makes these plans appealing to students, budget-conscious users, and frequent travellers.

How Do SIM-Only Plans Work

SIM-only plans operate like any standard mobile plan, but with more flexibility:

  • Monthly subscription: You pay only for mobile services, and many plans offer eSIM activation.
  • Prepaid or postpaid options: Prepaid users top up when needed; postpaid users enjoy auto-renewals and additional perks.
  • Number portability: Switching carriers is usually simple, and you can often keep your current number.
  • Flexible management: Plans can often be upgraded, downgraded, or cancelled without penalties.

For Maxx users, getting started is particularly seamless. Whether you choose a physical SIM or an eSIM, the process is designed to be fast and convenient. With just a few clicks, you can purchase your plan online, confirm your details, and complete payment.

Once activated through the Maxx app, you can start enjoying your plan immediately, all in under two minutes.

Comparing SIM-Only Plans vs Contract (Phone-Bundled) Plans

SIM-Only Plans – Who Are They Good For?

SIM-only plans are better for users who want to keep their mobile costs manageable. Students and budget-conscious individuals, for example, can benefit from predictable monthly bills. At the same time, those who already own a smartphone or prefer to purchase one outright have the freedom to choose their device on their own terms rather than opt for a contract plan.

The flexibility of SIM-only plans also makes them ideal for frequent travellers and digital nomads. With options for roaming data and easy plan switches, users can stay connected both locally and abroad without the burden of long-term commitments.

To sum up, SIM-only plans are particularly well-suited for:

  • Budget-conscious users and students
  • Those with existing devices or willing to buy phones outright
  • Digital nomads or travellers seeking roaming flexibility
  • Users who value easy plan changes and minimal commitments

Contract (Device-Bundled) Plans - Who Are They Good For?

Phone contract plans, which bundle a smartphone with mobile services, make high-end devices more accessible.

Beyond device access, phone contract plans often appeal to consumers who value additional perks and support. Telcos may include services such as priority customer support, bundled subscriptions, or bonus data, making phone contract plans better than SIM-only contracts for those who prefer an all-in-one package.

Phone contract plans are particularly well-suited for:

  • Users who want the latest devices without upfront payment.
  • Consumers who prefer predictable monthly payments.
  • People who value telco perks or premium support bundled with devices.

Comparing SIM-Only Plans with Phone Contract Plans: Which is Better for You?

When deciding between a SIM-only plan and a contract (device-bundled) plan, the choice often comes down to balancing cost, flexibility, and device access.

  • Cost: SIM-only plans generally save money over the long term since you’re only paying for mobile services, not a device. Contract plans spread the cost of a new phone over monthly payments, which increases your monthly bill but removes the need for a large upfront payment.
  • Flexibility: SIM-only plans allow users to switch providers, upgrade, or cancel their plan with minimal restrictions. Contract plans often lock you in for 12-24 months, limiting the ability to adapt your plan as your needs change.
  • Device Access: Contract plans provide instant access to the latest devices bundled with your plan. SIM-only users rely on their existing devices or must purchase a phone separately.

Maxx SIM-Only Plans: Affordable Freedom, 5G Included

With SIM-only plans offering clear cost benefits and flexibility, the next question is: which provider gives you the best value without compromising on speed or connectivity?

That's where Maxx, M1's SIM-only brand, comes in. Maxx is designed for users who want the freedom to manage their mobile plan on their terms, without sacrificing 5G speeds or data coverage.

Maxx Plan Local Data Roaming Data Talktime (outgoing) & SMS
$7.90* | 4G - Online Exclusive 290 GB (Singapore & Malaysia) 10 GB APAC Roaming

2 GB International Roaming
500 mins Local Outgoing Calls

Unlimited Local Incoming Calls

99 Local SMS
$10 | 5G 400 GB (Singapore & Malaysia) 13 GB APAC Roaming

3 GB International Roaming
500 mins Local Outgoing Calls

Unlimited Local Incoming Calls

50 Local SMS

Up to 300 IDD mins
$12 | 5G 500 GB (Singapore, Malaysia & Indonesia) 20 GB APAC Roaming

7GB International roaming
500 mins Local Outgoing Calls

Unlimited Local Incoming Calls

50 Local SMS

Up to 600 IDD mins

*Note: The $7.90/cycle promotional pricing applies for the first 12 cycles. Pricing will be reverted to $9.90 from the 13th cycle onwards. Each cycle lasts 30 days.

Types of SIM-Only Plans

Postpaid vs Prepaid SIM-Only Plans

SIM-only plans can be broadly divided into prepaid and postpaid options.

Prepaid plans operate on a pay-as-you-go basis, giving users full control over spending. They are especially convenient for light users or those who want a second SIM for work or travel, as you only top up what you need.

Postpaid plans, on the other hand, are billed automatically each month and often include additional perks such as bonus data, loyalty rewards, or discounted services.

Here are the key differences summarised:

  • Prepaid: Pay-as-you-go, avoids bill shock, ideal for light or occasional users.
  • Postpaid: Automatic monthly billing, often comes with perks, convenient for regular users.
  • Who benefits: Prepaid is best for casual or second-phone users; postpaid works well for students, professionals, and regular data users.

Contract vs No-Contract SIM Plans in Singapore

While many SIM-only plans offer complete freedom, some providers still have short-term commitments, typically ranging from six to twelve months. These contract SIM-only plans often provide extra incentives such as bonus data.

No-contract plans, in contrast, appeal to users who prioritise flexibility. With no binding terms, you can change plans, upgrade, or cancel at any time without penalties.

Plan Types by Features and Usage

SIM-only plans are designed to meet a wide range of needs. Understanding the different plan types can help you choose one that matches your usage patterns and lifestyle.

The key plan types include:

  • Data-Focused Plans: Tailored for heavy streamers, gamers, or remote workers, these plans provide generous data allowances.
  • Value/Basic Plans: Designed for light users who mainly use their phones for messaging, calls, and occasional browsing. These plans are ideal for seniors, casual users, or those using a second phone.
  • Family Plans: These plans allow multiple users to share a single data pool, offering savings and convenience for households.
  • International Roaming Plans: Geared towards travellers and cross-border workers, these plans include roaming data, allowing seamless connectivity abroad.
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Comparing SIM-Only Plans: Key Criteria to Consider

Price

Cost efficiency is the hallmark of SIM-only plans. Since you’re not subsidising a device, monthly fees are typically lower than contract plans. This allows users to save hundreds of dollars over the long term.

For those looking for SIM-only plans with mobile data bundles at reasonable prices in Singapore, it’s important to consider the total cost relative to the features provided.

Some plans may appear cheap at first glance but offer limited data, slower speeds, or fewer perks, which can reduce overall value.

Data Value

Data allowance is a major consideration, especially as mobile usage becomes more data-intensive. Evaluate the gigabytes per dollar ratio to determine which plan gives the best value. Look out for additional features like data rollover, unlimited access to social media apps, or video streaming bundles.

Coverage & Speed

Check whether the plan supports 4G and 5G access, and whether coverage is consistent across Singapore, including central, suburban, and outlying areas. Maxx, for example, ensures 5G connectivity throughout the island, providing smooth streaming, gaming, and work-from-anywhere performance.

Roaming

Some SIM-only plans include roaming data in the package, while others offer affordable top-ups for short-term international use. Consider whether roaming options meet your travel needs without incurring unexpected costs.

Flexibility

The ability to switch plans, upgrade data allowances, or cancel without penalty gives users full control over their mobile experience.

SIM-Only Plan Recommendations for Light Data Users

Plan Data Allowance Talktime (Mins) SMS Cost (per 30 days) 5G Compatible?
Maxx 290GB Online Exclusive 290 GB (SG-MY) 500 99 $7.90* No
Giga 100 GB 100 GB 300 300 $10.19 No
CMLink 200GB 200 GB 300 100 $7.70 No (5G Access and 10GB extra local data for $5/month)
Gomo 4G Saver 100 GB 300 300 $10.18 No
Circles.Life 4G Core 350 GB Unlimited - $10.80 No

*Note: The $7.90/cycle promotional pricing applies for the first 12 cycles. Pricing will be reverted to $9.90 from the 13th cycle onwards. Each cycle lasts 30 days.

Light data users typically consume under 50 GB of mobile data per month. They don’t stream extensively, rarely download large files, and mainly use their phones for essential online activities. Light data plans are ideal for users who want affordable, predictable monthly bills while staying connected.

SIM-Only Plan Recommendations for Moderate Data Users

Plan Data Allowance Talktime (Mins) SMS Cost (per 30 days) 5G Compatible?
Maxx $10 |5G 400 GB (SG-MY) 500 50 $10 Yes
Giga 400GB 5G 400 GB 800 800 $18.33 Yes
CMLink 400GB 400 GB 600 100 $15 No (5G Access and 10GB extra local data for $5/month)
Gomo 5G+ PROLITE 400 GB 1000 1000 $10.50 (with promo code. $20.99/mth thereafter) Yes
Circles.Life 5G Core 400 GB Unlimited - $12 (promo price. $15 after 3 months) Yes

Moderate data users typically consume 100-400 GB of mobile data per month. They rely on their phones for more than just basic browsing and messaging, using apps for work, streaming music or videos occasionally, and staying active on social media.

Moderate data plans offer a balance between sufficient data allowance and cost efficiency, making them ideal for users who need reliable connectivity without overspending.

SIM-Only Plan Recommendations for Heavy Data Users

Plan Data Allowance Talktime (Mins) SMS Cost (per 30 days) 5G Compatible?
Maxx $12 |5G 500 GB (SG-MY-ID) 500 50 $12 Yes
Giga 500GB 5G 500 GB 1000 1000 $20.37 Yes
CMLink Unlimited Unlimited 400 400 $31.1 Yes
Gomo 5G+ ASIA INFINITY Unlimited Unlimited Unlimited $15.28 (with promo code. $30.56/mth thereafter) Yes
Circles.Life 5G Most Unrestricted 800 GB Unlimited - $14.50 (promo price. $18 after 3 months) Yes

Heavy data users typically consume over 400 GB per month requiring fast, reliable connections for data-intensive activities. These users rely on their mobile plans to support gaming, streaming, large file downloads, or continuous remote work.

Heavy data plans are designed to provide generous allowances while maintaining high network speeds and connectivity.

What to Watch Out for When Choosing a SIM-Only Plan

Even with SIM-only plans, not all deals are created equal. Being aware of potential pitfalls ensures you get the best value and avoid unexpected costs.

  • Promo Pricing and Limited-Time Bonuses: Some plans advertise discounted rates or extra data that only last for a limited period. Be sure to check how long promotions last and what the plan will cost once the offer ends.
  • Hidden Fees: Watch for additional charges like activation fees, late payment penalties, or service add-ons that may not be obvious at first glance.
  • Network Congestion and Speed Throttling: Heavy usage during peak hours can lead to slower speeds, even on high-data plans. Review the provider’s fair-use policy and typical network performance to avoid frustration.
  • Roaming, Cancellation, and Data Rollover Terms: Check the fine print for roaming coverage, early termination rules, and whether unused data rolls over to the next month.

How to Sign Up for a SIM-Only Plan

Signing up for a SIM-only plan online is quick and convenient, often with eSIM options that let you skip physical SIM cards altogether. Here’s how to get started with Maxx:

Is a SIM-Only Plan Right for You?

Choosing the right mobile plan ultimately depends on your priorities and lifestyle. SIM-only plans are designed for users who want flexibility, cost savings, and control over their device and data usage. To help you decide if a SIM-only plan is the right fit, ask yourself the following questions:

  • Do I want predictable, lower monthly bills without hidden costs?
  • Do I already have a phone I’m happy to use, or plan to buy one outright?
  • Do I travel frequently or need roaming flexibility?
  • Do I prefer short-term commitments over long contracts and value the freedom to switch plans easily?

If most of these questions resonate with you, a no-contract SIM-only plan like Maxx could be the ideal choice for affordable, flexible mobile service tailored to your lifestyle.

Finding the Right Mobile Plan for Your Lifestyle

There's no one-size-fits-all answer when it comes to choosing a mobile plan. SIM-only plans offer freedom, transparency, and potential cost savings, giving you control over your data usage and device choices. On the other hand, phone contract plans are better for those who prefer convenience and instant access to the latest smartphones.

Maxx bridges the best of both worlds. With no contracts, 5G-ready connectivity, flexible plan options, and affordable pricing, Maxx allows you to stay connected on your terms. Whether you're a budget-conscious user, a frequent traveller, or someone who wants full control over your mobile experience, Maxx provides the freedom to choose what works best for you.

Explore Maxx's SIM-only plans online or via the app today and discover a mobile plan that fits seamlessly into your lifestyle, without compromise.

faq Frequently Asked Questions

What are the main advantages of SIM-only plans?

SIM-only plans offer lower monthly bills since you're not paying for a device, along with flexibility to switch providers, upgrade or downgrade your plan, and avoid long-term contracts.

Can I keep my number when switching?

Yes, most SIM-only plans support number portability, allowing you to retain your current phone number when moving from another provider or plan, making the transition seamless.

Do SIM-only plans include 5G?

Many SIM-only plans now include 5G access. For example, certain Maxx plans provide full 5G connectivity across Singapore, ensuring fast download speeds and reliable network performance.

Are there SIM-only plans with international roaming?

Yes, certain plans come with included roaming data, while others offer affordable top-up options, making it easy for frequent travellers to stay connected without incurring excessive charges.

How do I switch from a contract plan to a SIM-only plan?

Switching is straightforward: select a SIM-only plan that suits your needs and port your existing number. Maxx also offers easy online or app-based activation to simplify the process.

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APAC 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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