4S eSIM vs Roamix

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

4SRoamix

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 Roamix

ID verification

4S: Not confirmed yet

Roamix: 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.

Roamix: Refunds within 14 days of purchase for plans that haven't been installed or activated; once activated a plan is non-refundable except for technical issues reviewed case by case.

Validity starts

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

Roamix: Validity/usage begins on Activation (installation, first network session, or a published activation window), not simply at purchase, per Roamix's Terms.

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.

Roamix: All plans include full-speed, unthrottled 4G/5G data with no Fair Use Policy or speed cap.

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.

Roamix: Existing eSIMs can be topped up directly from the Roamix account dashboard without reinstalling.

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.

Roamix: A deleted eSIM can be reinstalled only on the exact same device with the original QR code; it can't be transferred to a new or replacement phone, so contact support before switching phones.

Billing currency

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

Roamix: Checkout is generally priced in USD; taxes, foreign-exchange charges, and payment-processor fees may apply depending on your location/payment method.

Support

4S: Email · Live chat · Help center

Roamix: Email · Help center · Live chat · 24/7

Payment

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

Roamix: Card · Apple Pay · Google Pay

Headquarters

4S: Kowloon, Hong Kong

Roamix: No single headquarters — remote-first, globally distributed, per Roamix's own About page.

Legal entity

4S: Wans Technology Limited

Roamix: Roamix Inc.

Founded

4S: Not confirmed yet

Roamix: Not confirmed yet

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

Roamix -10% ESIMKART10

4S eSIM vs Roamix — common questions

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

Compare 4S eSIM and Roamix by destination

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