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SIM-only phone plans come in a variety of forms. You can get a SIM-only phone plan that's paid upfront (prepaid) or afterwards (postpaid), with or without a contract. There are SIM-only options that cost a little for some data or a lot for hundreds of gigabytes. The more you pay, the more data you get, and the more plan features you can expect to receive.
In our comparison engine, we track more than a dozen providers that operate on the M1, Singtel, StarHub, and SIMBA mobile networks. While SIMBA is the only provider on its network, there are a few provider choices if you want a mobile plan on the M1, Singtel, or StarHub networks.
Generally, the mobile network holders have pricier SIM-only plans. Depending on which mobile network works best for your needs, the cheapest SIM-only plan will likely come from a mobile virtual network operator (MVNO). We track cheap mobile plans for under $10 from providers for mostly 200GB+ mobile plans. If your budget extends to $20, you can choose from cheap SIM-only plans with more data, call minutes, local texts, and other features.
Singtel is home to the cheapest SIM-only plan in Singapore (in terms of the plans from our database). We track the following mobile providers that operate on the Singtel mobile network:
The StarHub mobile network is home to a range of cheap SIM-only plans. Here are the StarHub mobile providers that we track:
The M1 mobile network is home to a range of cheap SIM-only plan providers, including these ones that we track in our database:
Unlike the other mobile networks in Singapore, SIMBA is both the owner and sole operator of its mobile network. Like many of the options above, SIMBA plan prices start at around $10. Unlike the other options above, all SIMBA plans come with 5G, alongside hundreds of gigabytes of data, unlimited local calls, and other features.
Whether you're a tourist in Singapore or a local looking to control your spending, you may want to consider a cheap prepaid SIM. Of the ones we track in our database, these providers offer prepaid plans:
If you're a tourist or local in the market for a cheap prepaid SIM plan, the options below are the cheapest ones from the prepaid providers in our database.
Some of the cheapest SIM-only plan options in Singapore are comparably priced, whether you opt for prepaid or postpaid. Note that some of these cheapest prepaid SIMs have data but may not include any call minutes or texts. That said, call and message allowances may not be as important if you're using data-based apps to call and text.
Mobile providers compete over data allowances, but you can get hundreds of gigabytes from cheap mobile plans for around $10. You might as well start with at least 100GB of data and adjust up as required. While 5G plans have the potential to be significantly faster than 4G plans, faster internet isn't as important for mobile apps as it is for home broadband. Save money with a 4G plan – especially if you don't have a 5G smartphone – or look for a cheaper 5G provider like SIMBA.
Plan perks are another consideration for cheap SIM-only plans. Some providers save money by offering few features, but international roaming is a common inclusion. Other providers may include international direct dial (IDD) minutes, but they're also generally available as an add-on if you need them. If you want a cheap SIM-only plan with features, consider going with one of the mobile network operators (but you may have to pay more).
What’s the cheapest SIM-only plan in Singapore?
The cheapest SIM-only plan in Singapore may change based on which mobile provider is offering a promotion on any given day. Check out the plans below for the cheapest SIM-only plans in Singapore today.
How do I switch mobile plans?
Contact your provider if you want to switch mobile plans with them. If you want to switch mobile plans to a different provider, ensure you're paid up and don't have any contract obligations. Switch to a new mobile provider before cancelling your existing plan.
Can I keep my number if I switch to a cheap SIM-only plan?
Yes, you can keep your number if you switch to a cheap SIM-only plan. Speak to your current mobile provider if you want a cheaper plan with them, or check the steps for porting your current number to a new provider.
Do cheap SIM-only plans have 5G?
Not every cheap SIM-only plan has 5G – the cheapest SIM-only plans are typically 4G – but there are cheap SIM-only plans that have 5G from providers like SIMBA, Circles.Life, M1, and MyRepublic.
Are cheaper mobile providers in Singapore good?
While pricier mobile providers (like most network owners) may offer better support and plan features, cheaper mobile providers in Singapore are still a good choice and a great way to save money.
What’s the best mobile provider in Singapore?
According to a mid-2025 report from Opensignal, StarHub is the most awarded mobile provider in Singapore across overall experience, 5G experience, coverage, and consistency categories.
Is it cheaper to buy a phone on a plan?
While provider promotions may make it initially cheaper to pair a phone with a mobile plan, it's cheaper long-term if you buy a phone outright and stick with it for at least three years. With your own mobile phone, you can access the cheapest SIM-only plans in Singapore.