Compare Mobile SIM Plans in Singapore
Live offers across tracked providers in Singapore — updated daily from the Giraffy database.
Live offers
- A Better 5G Deal for CNY
- $2 off for 3 months! That’s mobile plans from only $12.95/mth (U.P. $14.95)
- 30 GB CMLink
- StarHub Data Only Core
- MyRepublic 4G Flex
What are mobile SIMs in Singapore?
Mobile SIM plans provide voice, text and mobile data on Singapore's networks, sold as postpaid contracts, no-contract SIM-only plans or prepaid cards. Singapore has one of the world's highest smartphone-penetration rates and a fiercely competitive market where lean digital brands, known as MVNOs, ride on the major networks to offer generous data at low prices. SIM-only and eSIM options dominate for value-focused users, while postpaid plans bundle handsets and premium perks.
How the Singapore market works
Three mobile network operators own the infrastructure, and a wave of digital sub-brands and independent MVNOs lease capacity to sell their own plans. This has driven prices down and data allowances up, with plans often marketed on large or unlimited data buckets, no contracts and app-based sign-up. eSIM provisioning lets customers activate a line instantly without a physical card. Roaming add-ons, data rollover and contract-free flexibility are common differentiators in a crowded field.
Benefits
Large data allowances — Competition has pushed data buckets high, with many affordable plans offering tens of gigabytes or more.
No-contract flexibility — SIM-only plans typically renew monthly, letting you switch providers freely to chase better deals.
Low prices — Digital MVNOs undercut traditional postpaid pricing significantly for data-led users.
Instant eSIM activation — Many providers let you sign up and activate online within minutes.
How to choose
Estimate your monthly data use and pick a plan with a comfortable buffer rather than paying for unused unlimited tiers. Compare the per-gigabyte value, included local minutes and texts, and any roaming allowance if you travel. Check whether the plan is contract-free and whether promotional data reverts to a lower amount after a period. If you want a subsidised handset or premium network features, a postpaid plan from a major telco may suit better than a bare SIM.
Leading providers in Singapore
Options include the network-owning telcos and their digital sub-brands, plus independents such as Circles.Life, CMLink, MyRepublic, Maxx, Zero1, SIMBA and Eight, alongside M1. Digital brands compete aggressively on data-heavy, no-contract plans with app-first service, while the major telcos offer the widest coverage, retail support and handset bundles. Since MVNOs run on the same networks, coverage is broadly similar and the decision often comes down to price, data and features.
What it costs
SIM-only plans are inexpensive, frequently ranging from around S$5 to S$25 a month depending on data, with entry promotions as low as a few dollars and larger or unlimited plans toward S$30 to S$50. Postpaid plans with handset subsidies cost more but spread the phone's price. Watch for promotional data that steps down after an intro period, one-off SIM or registration fees, and roaming charges. No-contract plans avoid early-termination penalties, giving you the freedom to switch as new promotions launch, which they frequently do in this crowded market.
Protections and regulation
Mobile services are regulated by the Infocomm Media Development Authority (IMDA), which licenses operators, manages spectrum and sets consumer-protection standards on contracts, billing transparency and service quality. Number portability lets you keep your number when switching providers. IMDA requires clear disclosure of plan terms and handles complaints frameworks. Consumers who cannot resolve issues with their provider can turn to IMDA's channels or mediation.
Common questions
Is an MVNO as good as a major telco? — Coverage is similar since MVNOs use the same networks; telcos may offer better retail support and premium features.
Can I keep my number? — Yes, number portability lets you transfer your existing number to a new provider.
eSIM or physical SIM? — eSIM activates instantly and suits modern phones; a physical SIM works with any compatible device.
The cheapest Mobile SIM Plans in Singapore is S$2 /month from MyRepublic.
Mobile SIM Plans in Singapore — FAQ
What is the cheapest SIM-only deal in Singapore right now?
Giraffy tracks 5 live SIM plans across MyRepublic,CMLink,StarHub networks in Singapore. The lowest tracked price is S$2 /month. Sort by lowest price to see the cheapest options for your data needs.
Which network has the best coverage in Singapore?
Coverage quality varies by area and carrier. Check each network's official coverage map before switching — indoor coverage, rural reach, and 5G availability differ significantly between operators in Singapore.
What is eSIM and do I need a physical SIM card?
An eSIM is a digital SIM embedded in your device — you activate a plan without swapping a physical card. Most flagship and mid-range phones released after 2020 support eSIM. Check your device settings or ask the carrier to confirm compatibility before you switch.
Is 5G worth it on a SIM-only plan?
5G delivers significantly faster download speeds and lower latency than 4G — typically 100–500 Mbps versus 20–50 Mbps. It's worth it if your handset is 5G-capable and you're in a coverage area. Most 5G plans are now priced similarly to 4G equivalents.
Can I keep my phone number when switching networks?
Yes. In most markets you can port your number to a new network within one working day by requesting a PAC or porting code from your current provider. The switch happens automatically once you activate the new SIM.
What is the difference between prepaid and pay-monthly SIM plans?
Prepaid (pay-as-you-go) plans require no contract — you top up credit and use what you pay for. Pay-monthly plans bill you at the end of each month and typically offer more data for the same price, but require a credit check and a rolling or fixed-term commitment.
Do I need to unlock my phone before switching networks?
If your handset was purchased directly from a carrier, it may be network-locked and need unlocking before accepting a different SIM. Phones bought from manufacturers or retailers are usually unlocked. Contact your current carrier to check — unlocking is often free or available for a small fee.