Compare Best 5G SIM-Only Plans in Singapore (2025 Update)

As 5G rolls out across Singapore, finding the right mobile plan isn’t just about price—it’s about speed, coverage, and how well your plan matches your digital lifestyle. Whether you're a heavy streamer, mobile gamer, frequent flyer, or just looking for the most value, choosing the best 5G plan Singapore has to offer can unlock a whole new level of connectivity.

This updated 2025 guide helps you compare the best 5G network, plan features, pricing, and real-world use cases, so you can confidently switch to a plan that fits your needs.

Top 5G Plans and Providers in Singapore

Singapore’s 5G market has expanded rapidly, and SIM-only options now offer full access to Singapore 5G coverage without locking you into a contract.

Let’s compare the major players in 2025:

5G Plans Price vs Performance Breakdown

Circles.Life stands out for offering massive data allowances with fast speeds at competitive prices. Plus, it has 99% islandwide coverage, combining value with solid 5G speed.

Circles.Life’s New 5G AI Plans (Cheapest 5G Plans)

Here we introduce the newest offerings from Circles.Life in Singapore — emphasising their AI benefits and cheapest 5G tiers.

Why this matters
With AI-capabilities (chatbots, productivity assistants, language models) becoming part of everyday mobile usage, some telcos are bundling AI access and enhanced mobile benefits together with 5G. Circles.Life positions itself at the value end of the market with high data tiers + unrestricted calls + roaming perks.

Plan comparison

*Prices shown are the latest publicly available offers; always check current promotions.

Highlighting AI + mobile benefits

• These plans often include unlimited incoming/outgoing calls, so data-heavy users don’t need separate voice bundles.

• Free roaming data (e.g., 8–15 GB across key Asian countries) is bundled for some plans.

• CirclesAI enhances your mobile experience by giving you direct access to advanced AI tools powered by GPT-5, Perplexity Sonar and Gemini. CirclesAI helps you plan trips, manage tasks, learn on the go, and get instant answers — all from your phone. It’s seamless, intuitive, and designed to make everyday life smarter, faster, and more productive.

• These are no-contract SIM-only plans — so you gain flexibility.

Best 5G Network Coverage Comparison

When choosing the best network in Singapore, you’ll want to know who delivers the fastest and most reliable 5G plan Singapore options.

Nationwide 5G Coverage

Standalone (SA) 5G offers lower latency and higher performance, ideal for gaming and real-time applications. Circles.Life users benefit from access to M1’s growing SA network, offering a solid mix of urban performance and competitive pricing.

You can check current live coverage maps from IMDA or OpenSignal to get the latest signal strength updates in your area.

Best 5G Plans Based on Use Case

Your mobile usage matters. Here are tailored plan-recommendations by personas — so you match the plan to need, not just the cheapest option.

Students & Young Professionals

If you are a student or young professional: lots of streaming, some mobile hotspot, maybe gaming, occasional travel/roam.

Comparison Table

*Prices reflect current or promotional offers; always confirm.

Why these picks?

• 400 GB is sufficient for heavy streaming, social, multiple devices (tablet/phone) for many students/young pros.

• Circles.Life 400GB plan at S$12 gives exceptional value for data-heavy users who also want unlimited calls and roaming perks. Plus users can also get free access to paid AI models with CirclesAI (powered by GPT-5, Perplexity Sonar, Gemini) and cashback rewards with Circles Zerofy to achieve $0 mobile bill

• Latency matters if you’re gaming or using cloud apps — pick a plan that emphasises 5G and network latency support.

Frequent Travellers & Remote Workers

If you travel often (business or leisure) or work remotely from various locations, your plan needs to include good data + excellent roaming + voice flexibility.

Comparison Table

*Prices are entry/promotional; check T&Cs for roaming fair-use.

Why these picks?

• For travellers, roaming data and free incoming calls can matter as much as raw data.

• Circles.Life 5G Most Unrestricted offer stands out for value and volume if your roaming is primarily within Asia.

• StarHub and M1 provide good all-round options with stronger national network support and extra add-ons.

Data-Heavy Users / Mobile Power Users

Streaming 4K on the go, mobile hotspot replacing your home broadband, cloud gaming, VR/AR mobile use — this is you.

Comparison Table

Why these picks?

• If you’re basically using mobile as your primary internet, you’ll want high data caps, excellent 5G speeds and generous roaming or rollover policies.

• The value per GB drops significantly at higher tiers — massive advantage if you can commit to one plan.

Real-World Speed Test Insights

Speed tests show how plans perform beyond what's promised on paper. Recent OpenSignal reports rank M1 and Singtel as the fastest providers in Singapore for real-time performance, while Circles.Life consistently delivers top value by leveraging M1’s infrastructure.

Median 5G Speeds (Singapore, 2025)

Final Thoughts: Upgrade Smarter With the Right 5G Plan

Singapore’s 5G landscape in 2025 is faster, more competitive, and more accessible than ever. Whether you care about blazing speed, travel-friendly roaming, or unbeatable value, there’s a plan for every kind of digital lifestyle.

Circles.Life leads the pack with Singapore’s best 5G plan — offering a massive 400GB bundle packed with lifestyle perks and the freedom to stay connected anywhere. While M1 focuses on ultra-low latency and Singtel on seamless global roaming, Circles.Life delivers the most complete blend of speed, data, and savings.

So before your next stream, game, or trip abroad, explore Singapore’s best 5G SIM-only plans — and discover why more users are switching to Circles.Life for power, performance, and price.