Best Singapore SIM Plans 2026: Zym Mobile vs Singtel vs StarHub vs M1
Singapore has one of the most competitive mobile markets in Asia. You can get fast 5G coverage on plans from under SGD 10 to over SGD 80 per month — and the most expensive is rarely the best value. For those who cross the Causeway regularly, run an SME, or want flexibility without a 24-month commitment, this guide cuts through the noise.
🎁 Exclusive Thrive offer:Use code THRIVE at Zym Mobile for a free 3rd month when porting in from a non-Singtel provider
What Actually Matters in a Singapore SIM Plan
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Network quality
In Singapore, less differentiated than most people think. Singtel ranks #1; StarHub and M1 follow closely. MVNOs buy access to these networks — an MVNO on Singtel’s infrastructure gives you the same signal in most situations.
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Malaysia roaming
For Singapore residents who cross the Causeway regularly, built-in roaming is worth more than extra local data. Big three telcos charge SGD 10–15/day as an add-on. Some MVNOs include it in select plans.
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Contract vs no-contract
A 24-month contract locks you in. If a better plan launches or your needs change, you pay an early termination fee. No-contract plans cost slightly more monthly but give complete flexibility.
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Caller ID
A surprising number of plans charge extra for Caller ID. For anyone who screens calls — especially for business — this matters. Zym includes it free on every plan.
The Big Three: Singtel, StarHub, M1
Telco
Network
Typical SIM-only start
Contract
Roaming (Malaysia)
Caller ID
Singtel
SG #1
~SGD 30–35/mo
12–24 months
Add-on SGD 10–15/day
Included or add-on (varies)
StarHub
Strong
~SGD 25–35/mo
12–24 months
Add-on required
Included on some plans
M1
Strong
~SGD 20–30/mo
12–24 months
Add-on required
Included on some plans
💡 The catch with all three: retail overheads are embedded in the pricing. You are partly paying for physical stores and floor staff. Contracts protect the telco, not you.
📡 Exclusive Thrive Partnership · Zym Mobile Singapore
Zym Mobile: Singapore’s #1 Network. No Contract.
SGX-listed parent company (mDR Ltd). Free Caller ID on every plan. Built-in Malaysia roaming on select plans. Zero contracts. And an exclusive Thrive offer — code THRIVE for your free 3rd month.
💡 For Malaysian-background residents in Singapore who cross back regularly, Zym’s Roam Plus plan eliminates one of the most irritating recurring costs: the daily roaming charge that surprises you every time you forget to disable data before crossing the Causeway.
Common Questions
What network does Zym Mobile use?
Zym Mobile runs on Singapore’s #1 ranked network. Zym is a subsidiary of mDR Ltd, a publicly listed company on the Singapore Exchange (SGX), giving it the financial stability and network access of a major player at MVNO pricing.
What is the THRIVE promo code and how do I use it?
THRIVE is an exclusive promo code for ThriveBizAsia readers. Enter it at checkout on zym.sg or use the pre-embedded links on the TBA SG Connectivity Deals page. If you are porting in from any non-Singtel provider, you receive a free third month bill credit (up to SGD 15.10) applied in your third billing month.
Is there a contract with Zym Mobile?
No. All Zym Mobile plans are no-contract. The minimum subscription period is 2 months, after which you can cancel anytime with no fees. You can also switch between plans as your needs change.
Does Zym Mobile support Malaysia roaming?
Yes — select Zym plans include built-in Malaysia roaming. The Roam Plus plan is specifically designed for regular Causeway travellers with monthly roaming included rather than as a daily add-on.
Can foreigners and PRs sign up for Zym Mobile?
Yes. Available to Singapore Citizens, PRs, and foreigners with a valid FIN. Activation requires Singpass for identity verification. Foreigners without Singpass can visit a Zym physical location for assisted registration.
Does Zym Mobile have corporate / SME plans?
Yes. Zym offers dedicated SME plans with centralised billing and team management. Contact Zym’s corporate team via WhatsApp at 80900000 and mention THRIVE for priority onboarding.
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Singapore · Setup
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Network rankings based on independent testing current as of 2026. Zym Mobile plan details and pricing subject to change — verify current offers at zym.sg. The THRIVE promo code applies per Zym Mobile’s current terms and conditions. Thrive Business Asia earns a referral fee when you sign up via our links, at no extra cost to you.
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