Circles Life vs Simba vs Giga, which SIM only plan best value 2026 for heavy data?

For pure heavy data at your 80 to 100GB usage, Simba (formerly TPG) consistently offers the most GB-per-dollar, they've had plans with 100GB plus at very low monthly prices, sometimes under 15 dollars on promo. The trade-off is their network coverage relies on their own newer infrastructure, so in some deep indoor spots or older buildings the signal can dip compared to the big three. I've used Simba for over a year, streaming daily on the MRT with no real issues on the main lines, and no throttling I could notice. If price-per-GB is your top priority and you're mostly in well-covered areas, Simba wins. Just test it in your key locations (home, office) within any trial period.

Circles Life is the 'premium MVNO' choice, they run on M1's network so coverage is basically as good as a major telco, which matters if you're often in ulu areas or underground carparks. Their data plans are pricier than Simba but they frequently do unlimited-data add-ons and no-contract flexibility. I switched to Circles because Simba dropped signal at my workplace basement. You pay a bit more but the reliability for hotspotting during work was worth it to me. If your work depends on stable connection, don't just chase the cheapest.

Giga (by StarHub) is a good middle ground, runs on StarHub's network so solid coverage, and they bundle in caller features and decent data allowances at reasonable prices. For someone who wants big-telco network reliability but MVNO pricing and no lock-in, Giga is a safe bet. I find their app clean and top-ups easy. Not the absolute cheapest per GB like Simba, but you're paying for the StarHub backbone. Good if you want zero coverage anxiety without full telco pricing.

Don't forget to check the fine print on 'unlimited' or high-data plans for fair-use throttling and whether hotspot/tethering is fully allowed at full speed. Some plans quietly throttle hotspot or deprioritise you after a threshold during congestion. Since you hotspot for work, that's crucial. Also watch for promo pricing that jumps after 6 or 12 months, MVNOs love the low intro price that quietly doubles. Read the terms, set a calendar reminder for when promo ends, and be ready to port again, loyalty gets you nothing in telco.