Holafly vs 4S eSIM
— which eSIM is better?
Holafly's unlimited-data promise sounds like the obvious win for any long trip — until you check whether it actually covers your destination at the speeds you need. In Japan, Thailand, Singapore and South Korea, 4S eSIM's direct MNO relationships often deliver faster real-world speeds, even on a metered plan, than Holafly's unlimited-but-throttle-prone connection on a partner network.
Verdict
4S eSIM wins for Asia-focused trips on speed and direct carrier access; Holafly wins if your trip spans multiple regions outside 4S eSIM's footprint and you want guaranteed unlimited data.
Head-to-head
| Criteria | Holafly | 4S eSIM |
|---|---|---|
| Data model | Unlimited, no throttle | None on premium plans (metered) |
| Asia network quality | Partner MNO, unmetered | Direct MNO agreements (NTT, AIS, SingTel, KT/SKT)✓ |
| Coverage | 170+ countries (Europe/Americas strength)✓ | 80+ countries (Asia-focused) |
| Hotspot/tethering | No on most plans | Yes, included✓ |
| Typical price range | $19–$80 | $6–$40✓ |
Network routing — what's actually different
4S eSIM's direct agreements with NTT Docomo/SoftBank (Japan), AIS (Thailand), SingTel/StarHub (Singapore) and KT/SKT (South Korea) put it on the primary networks in each market. Holafly's Asia coverage relies on a smaller set of partner MNOs willing to carry unmetered traffic — which is part of why Holafly's strongest coverage is Europe and the Americas (T-Mobile EU affiliates, AT&T roaming) rather than Asia.
Pick Holafly if...
Long trips through Europe or the Americas where unlimited data and 24/7 support matter more than peak speeds.
Get Holafly →Pick 4S eSIM if...
Trips focused on Japan, Thailand, Singapore, Indonesia or South Korea, where direct carrier access typically means faster, more reliable connections at a lower price.
Get 4S eSIM →★ Affiliate disclosure: SignalRank earns a commission (10–40%) when you purchase through our links. The verdict above is based on coverage, network routing, and plan structure — commission rates do not affect it.
Holafly vs 4S eSIM — frequently asked questions
Is Holafly good for Japan?
Holafly works in Japan, but 4S eSIM's direct NTT Docomo/SoftBank relationship generally produces faster and more consistent speeds there. If Japan is a major part of your trip, 4S eSIM is worth comparing directly against Holafly before buying.
Does 4S eSIM offer unlimited data?
4S eSIM's premium plans have no throttle, which covers most realistic usage, but it isn't marketed as 'unlimited' in the same way as Holafly. For genuinely unlimited streaming-heavy use, Holafly's model is more explicit.
Which is cheaper for Southeast Asia?
4S eSIM is typically cheaper for Southeast Asia, with plans from $6 versus Holafly's $19 starting price, and its direct carrier agreements in Thailand, Singapore and Indonesia tend to deliver better real-world speeds for the lower price.
See how Holafly and 4S eSIM perform in your destination
Coverage and speed vary by city — check real performance scores for a specific destination.