Short answer: the best truly unlimited data mobile plan in Singapore in 2026 is a no-contract SIM-only plan in the S$30 to S$40 range, and for most people it is a waste of money. GOMO's 5G+ Asia Infinity, around S$30 to S$31 a month with unlimited local data and Asia roaming, is the strongest pick if you genuinely need unlimited. The catch is that none of these plans is actually limitless. Every one carries a fair-usage cap, usually 1,024GB (1TB) of local data a month, after which the telco can throttle your speed. The average Singapore mobile user burns through well under 30GB a month, so unless you tether a household or stream 4K on the bus daily, you are paying S$30-plus for headroom you will never touch. A 5G plan with 300GB to 500GB of data costs as little as S$8 to S$12 a month and does the same job. This guide has the 2026 prices, what 'unlimited' really means, and a simple way to work out whether you actually need it.
Unlimited data sounds like the obvious upgrade, but in Singapore in 2026 it is a niche product priced like a premium one. The honest framing is a money question: what do you pay, what do you get, and is the gap between unlimited and a big-data plan worth real dollars every month for two years?
Prices below are current as of mid-2026 and shift with promotions and new-line discounts, so treat them as the shape of the market and confirm the live figure on each telco's own page before you sign. The cheapest sensible answer for most people is not an unlimited plan at all. It is a no-contract SIM-only plan with 300GB to 500GB of data for S$8 to S$12 a month, which is more than almost anyone uses.
No mobile plan in Singapore is genuinely without limits. Every plan sold as unlimited is governed by a fair-usage policy, a clause in the terms that lets the telco manage or throttle your connection once you cross a threshold. For most unlimited plans that threshold is 1,024GB (1TB) of local data per billing month. Cross it and your speed can be cut, sometimes hard, until the cycle resets.
That cap is not the gotcha it sounds like, because 1TB is an enormous amount of mobile data. The point is the word 'unlimited' is marketing, not maths. What you are really buying is a very high ceiling plus the comfort of never watching a data meter. Whether that comfort is worth the price is the actual decision, and for most people it is not, because their usage sits nowhere near any cap, unlimited or otherwise.
The unlimited tiers also tend to bundle generous calls, SMS and roaming, which themselves carry fair-usage limits (often around 1,500 minutes and 1,500 SMS a month, and a capped amount of full-speed roaming data). So 'unlimited everything' usually means 'a lot of everything, with a ceiling on each, written in the fine print.' Read the fair-usage clause before you assume unlimited solves a problem you actually have.
This is the number that decides everything, and most people guess it far too high. By IMDA's own figures the average mobile subscription in Singapore used about 10GB a month in early 2025, so the typical user sits well under 30GB, and even fairly heavy users on home and office Wi-Fi rarely pass 50GB to 100GB. Unlimited plans are built for the small slice of people who do not have reliable Wi-Fi, tether laptops or consoles constantly, or stream high-definition video on mobile data for hours every day.
Check your real figure before you buy anything. On iPhone, go to Settings, Mobile Data, and scroll to the bottom for the period total (reset it at the start of a billing cycle to get a clean month). On Android, open Settings, Network and internet, then Data usage. Look at your last three months. If you are sitting at 20GB, 35GB or even 80GB, an unlimited plan is solving a problem you do not have.
Here is the money logic. A 300GB to 500GB 5G plan covers roughly ten times the typical user's monthly use and costs S$8 to S$12. An unlimited plan costs S$30-plus. If your three-month average is under 100GB, the unlimited plan is paying S$20-plus a month for data you will not use, which is S$240-plus a year. Run that through a personal budget and the gap becomes a real line item, not a rounding error. The same monthly discipline applies whether it is a phone plan, a broadband plan or any other recurring bill.
If you genuinely need unlimited (heavy tethering, no home Wi-Fi, or you just want zero data anxiety), these are the plans worth comparing at mid-2026 pricing. All are no-contract SIM-only plans unless noted, so you can leave any time, and all are subject to the fair-usage caps described above. Prices move with promotions and new-line discounts, so confirm the current figure on each provider's page.
GOMO's 5G+ Asia Infinity is the value pick for most heavy users at roughly S$30 to S$31 a month: unlimited local 5G data (1TB fair-usage cap), unlimited local calls and SMS, plus unlimited roaming data across many Asian destinations and a capped allowance to others. It runs on Singtel's network, which has strong coverage. GOMO's Global Infinity tier extends unlimited-style roaming worldwide for around S$50 a month, which only makes sense if you travel constantly. CMLink's unlimited 5G plan is a similar-money alternative near S$31, also on Singtel's network, and sometimes bundles large Malaysia roaming allowances.
For the safest coverage and a full incumbent service desk, StarHub's 5G Unlimited+ plans start around S$38 a month and scale up to premium tiers near S$188 with more roaming and perks. Singtel runs comparable unlimited tiers. You pay more than GOMO or CMLink for the brand, the retail stores and the bundles. MyRepublic's 4G Rewardland plan is the cheap unlimited option at about S$18 a month (sometimes lower with reward coins in the first few months), with a 1TB fair-usage cap, generous SEA roaming and 2,000 call minutes, but it is 4G only, so skip it if 5G matters to you.
One honest note on value: even the cheapest unlimited plan here (MyRepublic at S$18, 4G) costs more than a 500GB 5G plan at S$10. The unlimited premium buys you the ceiling and the peace of mind, not better day-to-day speed for normal use. If you want to compare the true two-year cost of unlimited against a big-data plan, the gap of S$20-plus a month is over S$480 across a typical replacement cycle.
| Provider / plan | Approx. price/mo | Network | Fair-usage cap | Roaming | Notes |
|---|---|---|---|---|---|
| GOMO 5G+ Asia Infinity | S$30 to S$31 | 5G (Singtel) | 1,024GB local | Unlimited across many Asia destinations; capped elsewhere | No contract; strong value pick |
| CMLink Unlimited 5G | ~S$31 | 5G (Singtel) | Per fair-usage policy | Often large Malaysia allowance (promo) | No contract |
| StarHub 5G Unlimited+ Core | from ~S$38 | 5G (StarHub) | Per fair-usage policy | Included; scales with tier | Incumbent support; tiers up to ~S$188 |
| GOMO 5G+ Global Infinity | ~S$50 | 5G (Singtel) | 1,024GB local | Unlimited-style worldwide (capped full-speed) | Only worth it for constant travellers |
| MyRepublic 4G Rewardland | ~S$18 | 4G (M1) | 1TB at 4G speed | 100GB SEA; 20GB APAC | Cheapest unlimited but 4G only |
The cap is not a hard wall where your data stops. Once you pass the fair-usage threshold (commonly 1,024GB of local data a month), the telco reserves the right to slow or deprioritise your connection for the rest of the billing cycle, not cut you off. In practice you keep a working connection for messaging, maps and web browsing, but heavy tasks like high-definition streaming or large downloads can crawl until the meter resets on your next bill date.
Two things matter here. First, the throttle is not guaranteed to bite the moment you cross the line. Telcos describe fair-usage as a tool to manage the small number of users whose consumption affects everyone else on the network, so a single big month rarely triggers anything. Second, deprioritisation during congestion is separate from the cap. Reseller plans (the cheaper brands) often sit lower in the queue than the parent telco's own customers when a cell is busy, so at peak hours a S$10 reseller plan can feel slower than a S$38 incumbent plan even though both are nowhere near any cap.
The reader takeaway: unlimited removes the meter, not the fine print. You are paying for the comfort of never thinking about gigabytes, plus a higher priority lane on some incumbent plans. If your real worry is speed at peak hours rather than running out of data, the network and the priority tier matter far more than the word 'unlimited'.
Roaming is the one area where an unlimited tier sometimes pays for itself, because overseas data is expensive and the unlimited plans bundle large regional allowances. The catch is the same as at home: 'unlimited roaming' is almost always a block of full-speed data (often 20GB to 25GB) that then slows, plus a list of included countries that varies a lot between plans. Match the destinations you actually visit against the plan's list before you assume it covers your trip.
GOMO's Asia Infinity bundles unlimited-style roaming across many Asian destinations with a capped full-speed allowance beyond that, which suits frequent regional travellers. Its Global Infinity tier near S$50 extends that worldwide for people who travel almost monthly. CMLink often runs a large Malaysia roaming promotion (a common pattern for the China-Mobile-linked brand), useful if your trips are mostly across the Causeway. StarHub and Singtel unlimited tiers include roaming that scales with the price you pay. For occasional travellers, none of this is worth a permanent unlimited bill: a separate travel eSIM or a roaming day-pass for the trip is usually cheaper than carrying an unlimited plan year-round for a few holidays.
IMDA also requires telcos to give consumers control over roaming to avoid bill shock, so check your roaming settings and any spend controls in the app before you travel. The safe default for most people is to leave roaming off and buy a dedicated travel data option per trip, the same way you would budget any one-off line item rather than build it into a recurring personal budget.
| Plan | Roaming style | Best for |
|---|---|---|
| GOMO 5G+ Asia Infinity | Unlimited-style across many Asia destinations; capped full-speed elsewhere | Frequent regional travellers |
| GOMO 5G+ Global Infinity | Unlimited-style worldwide with a full-speed cap, then slowed | Near-monthly long-haul travellers |
| CMLink Unlimited 5G | Often a large Malaysia promo allowance; smaller Asia blocks | Regular Johor / Malaysia trips |
| StarHub / Singtel unlimited tiers | Included roaming that scales with the price tier | Travellers who want incumbent support |
| Big-data plan plus travel eSIM | Buy data only for the trip | Occasional holidaymakers (usually cheapest) |
For the large majority who use under 100GB a month, the best-value answer is a no-contract SIM-only plan with a few hundred gigabytes of data, which costs a third of an unlimited plan and never runs out for normal use. These plans are where the Singapore market is genuinely competitive in 2026, and the per-gigabyte pricing is some of the cheapest in the world.
At the value end, SIMBA's plans run on its own 5G network and pack hundreds of gigabytes with unlimited local calls for around S$10 a month, often with regional roaming thrown in. Maxx, Eight, Zero1, CMLink and redONE offer 200GB to 500GB-class plans in the S$7 to S$12 range, mostly on 4G or hybrid networks. M1's 1TB Bespoke SIM-only plan is the standout for extreme users who want a near-unlimited ceiling without the unlimited price: about S$18 a month for a full terabyte of 5G data, which is the same fair-usage cap most 'unlimited' plans hit anyway. Circles.Life sits around S$10 to S$11 for 350GB with unlimited calls on M1's network.
The pattern: a 500GB 5G plan at S$10 and a 1TB plan at S$18 cover practically everyone, including most people who think they need unlimited. M1's 1TB Bespoke is the clearest example of the trap, because it gives you the exact same 1TB ceiling as a S$30 unlimited plan for roughly S$18. Before paying the unlimited premium, ask whether a 1TB plan at S$18, or even a 500GB plan at S$10, already covers the worst month you have ever had.
All the cheap plans ride on one of the three main networks, so the underlying signal is broadly comparable, but the resellers usually get lower priority than the parent brand during congestion. Knowing which network a plan runs on matters more than the logo on the SIM. GOMO and Zero1 run on Singtel, giga runs on StarHub, Circles.Life and Maxx run on M1, and SIMBA operates its own 5G network. CMLink runs on Singtel.
Independent benchmarks in Singapore generally put StarHub and Singtel ahead on raw speed, with M1 close behind and SIMBA's own network solid in built-up areas but historically thinner in some indoor and fringe spots. For everyday use in the city, the difference is small. If you commute on the MRT, work in basements or live somewhere with patchy reception, the incumbent networks (Singtel, StarHub, M1) are the safer bet, and that is part of what an unlimited incumbent plan is selling you alongside the data.
This is the real reason to pay more, not the unlimited data itself. If you have spotty coverage where you live or work, a reliable network on a big-data plan beats unlimited data on a weaker one. Pick the network first, then the data size, then the price. Do not let the word 'unlimited' override a coverage problem it cannot fix.
The monthly price is not the whole bill. A few extra numbers decide what you actually pay, and they can flip which plan is cheaper. Most SIM-only plans charge a small one-time SIM card or delivery fee (often a couple of dollars to around S$10), and some unlimited or promo plans quote an upfront activation fee on top of the first month.
GST applies to your mobile bill at 9% in Singapore, the rate since 1 January 2024. Check whether the advertised price already includes GST or adds it on top, because a plan quoted at S$30 before tax is about S$32.70 on the bill. Across a year that is real money, and it is the kind of small recurring leak that adds up, the same way unchecked subscriptions do.
Watch the promo structure too. Many low headline prices are new-line or port-in promotions that revert to a higher standard rate after 6 or 12 months, or depend on reward coins for the first few months. Read what the price becomes after the promo ends, set a reminder, and re-shop your plan each year rather than drifting onto the loyalty rate. Because SIM-only plans are mostly no-contract, switching is easy and there is no penalty, unlike a broadband contract. eSIM support, where the telco offers it, makes switching even faster since there is no physical card to wait for.
The thing that stops most people downgrading from an overpriced plan is the fear of losing their number or facing a painful switch. Neither holds up in Singapore. Since 13 June 2008 the country has had full mobile number portability, so you can move your existing number to a new telco and the transfer completes by the next working day. Prepaid lines can port too. You do not call your old telco to beg; you sign up with the new one, give them the number you want to bring over, and they handle the move.
Two regulatory points work in your favour. Phones sold in Singapore cannot be SIM-locked to one operator, so any handset you bought here works on any network the day you switch. And because the cheap SIM-only plans are no-contract, there is no early-termination charge for leaving, unlike a broadband line that usually ties you in for 24 months. The only friction is timing the switch so you do not pay two bills for one month, which you control by starting the port a day or two before your current cycle ends.
eSIM makes it faster still. Where the telco supports it, you activate a new plan by scanning a QR code, with no physical SIM to wait for in the post, and many phones hold two profiles so you can test a new plan before cancelling the old one. The practical routine: check your three-month data use, pick the cheapest plan on a network that covers you, port your number, and set a calendar reminder to re-shop in a year.
Unlimited postpaid plans assume you are a resident with a billing relationship. If you are a tourist, a new arrival, or someone who just wants no commitment, prepaid is the relevant aisle. Prepaid tourist SIMs and data passes sold by the telcos and at the airport bundle a fixed block of high-speed data over a set number of days rather than true unlimited, which is fine for a short trip and avoids any roaming charge entirely.
For longer stays, a no-contract postpaid SIM-only plan is almost always cheaper per gigabyte than a tourist prepaid pack, and you keep number portability and the right to leave any time. If you are setting up a local line after moving here, the expat prepaid SIM guide walks through the registration steps, and the broader SIM-only plan comparison covers the postpaid options once you have a local address and ID set up.
The decision is short. Days, not months, and just want it to work: a prepaid tourist data pass. Staying and want the best price: a no-contract postpaid SIM-only plan, unlimited only if your usage truly demands it.
Work it backwards from your actual usage and your coverage, not from the marketing. The decision is short once you have your own data figure in hand.
First, check your last three months of data use on your phone. If your worst month is under 200GB (almost everyone), buy a big-data plan, not unlimited. If you regularly pass 300GB to 500GB, look at a 1TB plan like M1's Bespoke before considering unlimited. Only if you genuinely blow past 500GB to 1TB, or you tether a laptop or console with no Wi-Fi backup, does a true unlimited plan earn its price.
Second, match the network to where you spend your time. Patchy coverage at home or work means an incumbent network (Singtel, StarHub, M1) is worth paying a little more for, on whatever data size you need. Third, pick the cheapest plan on that network that covers your usage with room to spare, and confirm the post-promo price and any upfront fees before you commit. Treat your mobile bill like any recurring expense and re-shop it once a year, the same yearly check worth running on your savings account or credit cards.
For most heavy users the strongest truly unlimited pick is GOMO's 5G+ Asia Infinity at about S$30 to S$31 a month, with unlimited local 5G data (1TB fair-usage cap), unlimited local calls and SMS, and unlimited roaming across many Asian destinations, all on Singtel's network with no contract. CMLink's unlimited 5G plan is a similar-money alternative near S$31. If you want full incumbent coverage and support, StarHub's 5G Unlimited+ plans start around S$38. MyRepublic's 4G Rewardland is the cheapest unlimited option at about S$18 but is 4G only. Confirm current pricing and fair-usage terms on each provider's page, as promotions change.
For most people, no. The average Singapore mobile user consumes well under 30GB a month, and even heavy users on Wi-Fi at home and work rarely pass 100GB. Unlimited plans cost S$30-plus a month, while a 5G plan with 300GB to 500GB of data costs S$8 to S$12 and covers about ten times typical use. Unless you tether a laptop or console constantly, have no reliable Wi-Fi, or stream hours of high-definition video on mobile data daily, you are paying S$20-plus a month for headroom you will never use, which is over S$240 a year. Check your last three months of data use before deciding.
No. Every plan sold as unlimited is governed by a fair-usage policy that lets the telco manage or throttle your speed once you cross a threshold. The common local-data cap is 1,024GB (1TB) a month, after which your connection can be slowed until the billing cycle resets. Unlimited calls and SMS are usually capped too, often around 1,500 minutes and 1,500 SMS, and roaming has its own full-speed limit. The cap is high enough that almost no one hits it, but 'unlimited' is marketing rather than literally without limits, so read the fair-usage clause before assuming it solves a problem you have.
Well under 30GB a month for the typical user; IMDA's telecom statistics put the average mobile subscription at roughly 10GB a month in early 2025. Most people spend much of their day on home or office Wi-Fi, so mobile data mainly covers commuting, errands and time out of the house. Even fairly heavy users who stream music, scroll video and use maps regularly tend to stay under 100GB. You can check your own figure on iPhone under Settings, Mobile Data (scroll to the period total) or on Android under Settings, Network and internet, Data usage. Look at your last three months. If your worst month is under 200GB, a big-data plan is more than enough and unlimited is unnecessary.
SIM-only plans with hundreds of gigabytes start around S$7 to S$12 a month with no contract. SIMBA runs on its own 5G network with hundreds of GB and unlimited local calls from about S$10. Maxx, Eight, Zero1, CMLink and redONE offer 200GB to 500GB-class plans in the S$7 to S$12 range. M1's 1TB Bespoke plan gives a full terabyte of 5G data for about S$18, the same fair-usage ceiling most unlimited plans hit, for far less money. Circles.Life offers around 350GB with unlimited calls near S$10 to S$11. Verify current prices and any post-promo rates on each provider's page.
Independent benchmarks generally put StarHub and Singtel ahead on raw speed, with M1 close behind, while SIMBA's own 5G network is solid in built-up areas but historically thinner in some indoor and fringe spots. Cheaper plans ride on these networks: GOMO and Zero1 use Singtel, giga uses StarHub, Circles.Life and Maxx use M1, CMLink uses Singtel, and SIMBA runs its own network. For everyday city use the difference is small, but if you have patchy coverage at home or work, an incumbent network (Singtel, StarHub or M1) is the safer choice on whatever data size you need.
Most do not. The unlimited plans from GOMO, CMLink, MyRepublic and the SIM-only tiers of StarHub and Singtel are typically no-contract, so you can leave any time without an early-termination penalty, unlike broadband which usually locks you in for 24 months. That makes it easy to try unlimited and downgrade if you find you never use it, or to re-shop your plan each year for a better deal. Watch for promotional pricing that reverts to a higher standard rate after 6 or 12 months, and where eSIM is supported, switching is faster because there is no physical SIM to wait for.
Often yes. M1's 1TB Bespoke SIM-only plan costs about S$18 a month and gives you a full terabyte of 5G data, which is the same fair-usage cap most 'unlimited' plans hit at 1,024GB. So you get effectively the same ceiling as a S$30 unlimited plan for roughly S$12 less a month, around S$144 a year. Unless you specifically value the unlimited branding or need the extra roaming bundled into an unlimited tier, a 1TB plan is the smarter buy for the rare person who actually approaches the cap, and a 300GB to 500GB plan is enough for everyone else.
Your data is not cut off. Once you pass the fair-usage threshold (commonly 1,024GB of local data a month), the telco can slow or deprioritise your connection for the rest of the billing cycle, then it resets on your next bill date. You keep a usable connection for messaging, maps and browsing, but heavy tasks like high-definition streaming and large downloads can become slow. A single big month rarely triggers anything, because fair-usage is aimed at sustained extreme use. Separately, cheaper reseller plans can be deprioritised below the parent telco's own customers during congestion, so at peak hours a budget plan may feel slower regardless of how much data you have left.
Yes. Singapore has had full mobile number portability since 13 June 2008, so you can move your existing number to a new telco and the transfer completes by the next working day, including for prepaid lines. You sign up with the new provider and give them the number to bring over; they handle the move, and you do not need to settle anything with the old telco beyond any final bill. Phones sold in Singapore also cannot be SIM-locked to one operator, so your handset works on any network, and no-contract SIM-only plans carry no early-termination fee, which makes switching to a cheaper plan low-risk.
Tourist prepaid SIMs and data passes from the local telcos give a large block of high-speed data over a set number of days rather than true unlimited, which is the practical choice for a short visit and avoids roaming charges entirely. For a longer stay, a no-contract postpaid SIM-only plan is usually cheaper per gigabyte than a tourist pack and keeps number portability and the freedom to leave any time. Prepaid lines can also be ported. New arrivals setting up a local line should check the registration requirements before buying, then compare postpaid SIM-only plans once they have a local address and ID.
Some telcos offer time-limited unlimited data as a low-cost add-on rather than a full unlimited plan, for example an unlimited weekend data option layered on top of a normal big-data plan. These can be good value if your heavy use clusters on weekends, because you pay a small monthly fee for unlimited only when you need it rather than carrying a S$30-plus unlimited plan all month. Check the current add-on price and any promotional free-trial period on the provider's page, and weigh it against simply buying a larger data plan if your usage is spread evenly across the week.
This is general financial information for Singapore, not personal financial advice. Figures change — verify current rates against the official sources above before acting. See our full disclaimer.