4S eSIM vs esim0

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

4Sesim0

Unlimited data ✓ Yes ✓ Yes

Regional bundles ✓ Yes ✓ Yes

Global bundles (50+ countries) ✓ Yes ✓ Yes

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 esim0

ID verification

4S: Not confirmed yet

esim0: 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.

esim0: Refund within 7 days of purchase if the eSIM cannot activate due to a fault on their side, advertised coverage is unavailable, the same plan was bought twice, or the QR code was not delivered within 24 hours. No refund once the eSIM has been activated or used, or for device incompatibility or changed travel plans.

Validity starts

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

esim0: Validity starts at the first connection to the network (Terms §6); an unused eSIM stays installable for 180 days after 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.

esim0: 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.

esim0: Top-ups from the dashboard for eligible eSIMs only; a different destination or an expired plan needs a new eSIM.

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.

esim0: Not confirmed yet

Billing currency

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

esim0: Plans are priced and charged in USD; other currencies on the site are display conversions.

Support

4S: Email · Live chat · Help center

esim0: Email · WhatsApp · 24/7 by email

Payment

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

esim0: Card

Headquarters

4S: Kowloon, Hong Kong

esim0: Hungerford, United Kingdom

Legal entity

4S: Wans Technology Limited

esim0: ESIM0 LTD

Founded

4S: Not confirmed yet

esim0: 2025

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

esim0 -15% ESIMKART

4S eSIM vs esim0 — common questions

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

Compare 4S eSIM and esim0 by destination

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