4S eSIM vs eSIM4

At a glance

Whole-catalog figures — every active plan each provider sells today.

Price check in popular destinations

The cheapest plan each provider sells for two realistic trip sizes, in the destinations both cover that travelers check most. Every price is a live plan you can buy.

Plan types on offer

4SeSIM4

Unlimited data ✓ Yes ✓ Yes

Regional bundles ✓ Yes No

Global bundles (50+ countries) ✓ Yes No

Cruise / at-sea plans No No

Pay as you go No No

Comparison by eSIMKart

Policies compared

Confirmed from each provider's own site — see the trust card on each provider page for the verification date.

4S eSIM4

ID verification

4S: Not confirmed yet

eSIM4: Not confirmed yet

Refund policy

4S: Refund eligibility is reviewed case-by-case based on order/eSIM status and reason — no fixed window stated; contact support to request review.

eSIM4: 30-day refund window from purchase if the eSIM has not been activated; also refundable/exchangeable if it can't be installed due to a technical problem on eSIM4's side. Once installed, considered used and non-refundable.

Validity starts

4S: Most plans start counting on first use, when the eSIM connects and begins using data (checked on your 4S service page).

eSIM4: The validity period starts when the eSIM connects to any supported network(s), not at purchase.

Fair-use limit

4S: Unlimited plans include a high-speed data quota for the full validity period; after it is used, speed drops to up to 1 Mbps until the plan expires.

eSIM4: Not confirmed yet

Top-ups & rollover

4S: Self-serve top-up (same destination/region only) adds high-speed data to the current plan and extends its validity by the top-up package's own validity period.

eSIM4: Set per plan — most plan listings state "Rechargeable online with no expiry" (see each plan's own note); not every plan mentions rechargeability.

Lost device / reinstalling

4S: Each eSIM QR/activation code can only be installed once; a deleted eSIM usually cannot be reinstalled with the same code — contact support for a replacement.

eSIM4: An eSIM can only be installed once — reinstalling shows "no longer valid/available"; eSIMs cannot be reinstalled or regenerated once removed.

Billing currency

4S: Checkout supports multiple currencies (USD, EUR, GBP, JPY, CNY and others via a currency selector); USD is the default.

eSIM4: Billed in USD (native USD pricing, Stripe checkout).

Support

4S: Email · Live chat · Help center

eSIM4: WhatsApp · Email · Phone

Payment

4S: Google Pay · Alipay · Card · PayPal · Crypto

eSIM4: Card · PayPal

Headquarters

4S: Kowloon, Hong Kong

eSIM4: Sydney, Australia

Legal entity

4S: Wans Technology Limited

eSIM4: Bay Call Pty Limited (ABN 60 104 926 678)

Founded

4S: Not confirmed yet

eSIM4: 2002

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

eSIM4 No live code

4S eSIM vs eSIM4 — common questions

Figures on this page come from both providers' live catalogs and are re-checked automatically every day.

Compare 4S eSIM and eSIM4 by destination

Head-to-head prices for the destinations travelers check most.