Best SIM Only Plans: StarHub 5G Unlimited+

SIM only plans have become increasingly popular in Singapore as more mobile users look for flexibility, clearer pricing, and freedom from long contracts, without giving up fast and reliable network performance.

However, choosing the best SIM only plan is not simply about finding the lowest monthly price. The right plan depends on how you use your phone, how much data you consume, whether you travel often, and how important consistent network quality is in your daily life.

This guide walks through everything you need to know, from understanding what a SIM only plan is, to comparing SIM only plans in Singapore meaningfully, and finally to seeing how StarHub’s 5G Unlimited+ plans are designed to meet modern mobile needs.

🤔 What Is a SIM Only Plan?

A SIM only plan is a mobile plan that provides data, talk time and SMS without a bundled smartphone.

Instead of paying for a device through your monthly mobile bill, you use your existing phone or purchase one separately. This means your monthly fee reflects only the mobile service itself, without any handset cost built in.

Because of this structure, SIM only plans are typically characterised by:

• Lower monthly fees

• Shorter or no contract commitments

• Greater control over when and how you upgrade your device

SIM only plans are therefore well suited to users who already own a phone they are satisfied with, or who prefer to manage their device purchases independently.

🆚 SIM Only vs Contract Plans

The main difference between a SIM only plan and a contract plan comes down to how the phone is paid for.

👉 A SIM only plan is centred on mobile usage. You pay a monthly fee for data, calls and SMS, usually without a long-term commitment. This makes it easier to adjust your plan as your needs change, without worrying about early termination fees.

👉 A contract plan bundles a new smartphone with a mobile service agreement that typically runs for 12 to 24 months. The device cost is spread across the contract period, which lowers the upfront payment but results in higher monthly bills and a longer commitment.

Key differences at a glance

 📊 How to Compare SIM Only Plans in Singapore

When comparing SIM only plans, the goal is not to find the cheapest option on paper, but the one that fits how you use your phone in real life. The table below summarises the key factors to evaluate and what to look out for.

📡 Which SIM Only Plan Has the Best Coverage?

In Singapore, most mobile networks provide strong island-wide outdoor coverage, so you are unlikely to face major issues when moving around the city. That said, the actual experience can vary depending on where you spend most of your time and how you use your phone day to day.

Differences in coverage are usually felt most in places such as:

• MRT tunnels and underground areas

• Large office buildings and commercial complexes

• Carparks and lift lobbies, where signals need to travel through thick structures

Because of this, a plan that works perfectly outdoors may behave differently indoors or during your daily commute.

It is also worth noting that many digital or online-only mobile brands run on the same networks as the main telcos.

For the best experience, it helps to choose a SIM only plan that delivers consistent connectivity in the places that matter most to you, such as your home, workplace, and regular travel routes.

🌟 Why Choose StarHub 5G Unlimited+ SIM Only Plans

After understanding how SIM only plans work and what to compare, the next step is choosing a plan that delivers reliable performance, flexibility, and long-term value.

StarHub’s 5G Unlimited+ plans are designed around these priorities, offering no-contract flexibility alongside premium network performance and built-in benefits.

⚡Unlimited Local 5G Data

A common concern with unlimited plans is whether speeds are automatically reduced after a certain amount of usage.

With 5G Unlimited+ Core plans and above, there is no predefined data cap after which speeds are automatically reduced. Fair usage policies apply only to protect network integrity and prevent abuse.

This allows you to stream, work, game, and download with confidence, without constantly monitoring your data usage.

StarHub’s 5G network has also been recognised for consistent quality and provides over 99 percent outdoor 5G coverage across Singapore.

✈️ Built-In Global Roaming 

All StarHub 5G Unlimited+ plans include built-in roaming data, so you can stay connected the moment you arrive overseas.

Roaming entitlements vary by plan tier, ranging from essential roaming on entry plans to higher roaming allowances on premium plans, covering up to 165 global destinations. Additional roaming add-ons are available if you need more data while travelling.

🕊️ No Lock-ins, No Contracts

All 5G Unlimited+ plans are fully no-contract.

You can upgrade, downgrade, or cancel your plan without early termination fees, giving you flexibility as your usage or circumstances change.

💰 Save for Your Next Phone with DeviceDollars

Our plans automatically credit you with monthly device credits which you can save and use for your next phone purchase.

Use Your DeviceDollars Your Way:

• Option 1: Redeem Monthly: Already on a device installment plan?
  Your DeviceDollars are automatically applied to your monthly device payments - instantly lowering your out-of-pocket cost every month. Simple, seamless savings.

• Option 2: Save & Redeem Later: Happy with your current phone? 
  Your DeviceDollars will keep accumulating every month until you’re ready for an upgrade. When the time comes, use your accumulated balance to enjoy a discount on any new device, anytime you choose.

👨‍👩‍👧‍👦 Multi-Line Discount: More Lines, More Savings

Enjoy automatic savings when you connect multiple lines under the same account - perfect for families, couples or households:

🔍 Compare StarHub's New 5G SIM Only Plans 

See how our 4 powerful new 5G plans stack up. This table is an essential comparison for anyone researching no-contract 5G SIM Only plans in Singapore:

👑 Finding Your Perfect 5G SIM Only Plan

5G Lite

👉 Best For: Value-seekers, moderate streamers, and users who travel occasionally.

• The 5G Lite ($22/mth) plan is the easiest and most affordable way to hop onto StarHub's 5G network while still enjoying a massive 150GB of local data. It proves that no-contract freedom doesn't mean compromising on quality or leaving out essential perks like built-in roaming.

5G Unlimited+ Core

👉 Best For: Heavy local data users, students, and digital residents.

• For only $38/mth, you unlock Unlimited Local Data and Unlimited calls/SMS. This plan removes all local usage limits, giving you total peace of mind. It’s the ultimate everyday SIM Only upgrade for true freedom.

5G Unlimited+ Plus

👉 Best For: Frequent regional travellers, users who need more global roaming, and those starting to save up for their next device.

• For $48/mth, you get everything in the Core plan, plus a big jump in roaming (5GB Global + 10GB APAC) and more monthly device credits in the form of 10 DeviceDollars. It's the perfect sweet spot for premium usage and regional mobility.

5G Unlimited+ Max

👉 Best For: Frequent business travelers, global citizens, and device enthusiasts.

• This plan is truly next level. It offers Unlimited Local Data plus a massive 20GB of global roaming (in 165 destinations!) and the highest monthly device credits value among our 5G Unlimited+ Plans with 20 DeviceDollars. The 5G Unlimited+ Max ($78/mth) is your go-to SIM Only plan for a truly borderless lifestyle with the best value for those who want a device with their plan.

We Got You: Your Mobile Peace of Mind

Your mobile plan shouldn't hold you back with restrictive contracts. With StarHub's new 5G Unlimited+ Plans, you get the unparalleled freedom of no-contract SIM Only flexibility combined with the power of unlimited data, built-in device savings, and premium network reliability. It’s time to live your best life, connected.