Best eSIM Travel 
Flexiroam eSIM Review 2025 — Is It Good for Southeast Asia?
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Flexiroam is a Singapore-based eSIM provider that takes a different approach from Airalo and Holafly. Its traditional model used a physical SIM overlay; it’s now transitioned to full eSIM. I tested it in Thailand to see how it compares.
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Flexiroam — Company Overview
Founded: 2012 (Singapore)
Coverage: 200+ countries
Original model: Physical SIM overlay (X-SIM) — attach to existing SIM card
Current model: Full eSIM available via Flexiroam app
Headquarters: Singapore
Flexiroam is one of the older players in the travel SIM market, pre-dating the eSIM era. It’s pivoted successfully to eSIM while maintaining its Singapore base.
Flexiroam Pricing — Asia Plans
| Plan | Data | Duration | Price |
|---|---|---|---|
| Thailand 3GB | 3 GB | 30 days | $11 |
| Thailand 10GB | 10 GB | 30 days | $19 |
| Asia 5GB | 5 GB | 30 days | $16 |
| Asia 10GB | 10 GB | 30 days | $28 |
Versus Airalo:
- Thailand 10GB: Flexiroam $19 vs Airalo $17
- Asia 10GB: Flexiroam $28 vs Airalo Asia Regional $17
Flexiroam’s Asia Regional equivalent is 65% more expensive than Airalo.
Performance Testing — Bangkok
| Metric | Flexiroam | Airalo |
|---|---|---|
| Network (Bangkok) | AIS | AIS |
| Download | 49 Mbps | 52 Mbps |
| Upload | 24 Mbps | 28 Mbps |
| Latency | 20ms | 18ms |
Nearly identical — both use AIS. The network partner, not the eSIM provider, determines performance.
Flexiroam’s Unique Features
Data Boost: Flexiroam offers “Data Boost” — purchase additional GB top-ups without buying a new plan. Works like a data add-on.
Flexiroam Unlimited (subscription): A monthly subscription model offering unlimited data in select countries. More expensive but relevant for frequent travellers.
Business accounts: Flexiroam targets business travel with corporate billing options.
Flexiroam App — Mixed Experience
The Flexiroam app works but feels less polished than Airalo:
- Plan browsing is functional but not intuitive
- Setup process requires more steps
- App notifications and data usage tracking less detailed
- Customer support via chat — adequate response times
Who Should Consider Flexiroam?
- Existing Flexiroam users from the X-SIM era who value brand continuity
- Users who want a subscription model for unlimited data
- Singapore-based travellers who prefer a local company
Verdict
Flexiroam is a legitimate eSIM provider with solid performance (AIS network in Thailand). But its Asia Regional pricing ($28 vs Airalo’s $17) is 65% more expensive for equivalent coverage and performance. For new travellers, Airalo provides better value with a superior app experience.
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