4S eSIM vs JamboSim

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

4SJamboSim

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 JamboSim

ID verification

4S: Not confirmed yet

JamboSim: Not required

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.

JamboSim: 30-day window from purchase. Full refund for a confirmed technical/supply fault, duplicate charge, or a charge with no eSIM delivered. No refund once the eSIM is installed/activated regardless of usage, for coverage/speed disappointment, cancelled trips, or an unused-but-expired eSIM. Refunds via Stripe to the original payment method, 5-10 business days; 2-day response, 7 days to complete once approved.

Validity starts

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

JamboSim: Plan validity starts on activation, not purchase; the exact window is shown per plan (e.g. 3, 7, 15, 30 days from first connection).

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.

JamboSim: Unlimited plans: 3GB of high-speed data per day, then about 1 Mbps until the daily reset at midnight local time. Regular data bundles have no daily fair-use limit.

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.

JamboSim: Top up an existing eSIM from your JamboSim account anytime - the extra data is added to the same profile, no reinstall needed.

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.

JamboSim: An eSIM can be installed on one device only. If an installed eSIM's profile is deleted it can't be reinstalled, so contact support. A failed first install can often still be completed manually from My eSIMs.

Billing currency

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

JamboSim: Prices are in US dollars unless noted otherwise and include any EU VAT; payment is processed by Stripe. Currency-conversion fees from your bank or card issuer aren't covered.

Support

4S: Email · Live chat · Help center

JamboSim: Live chat · Email · 24/7

Payment

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

JamboSim: Card · Apple Pay · Google Pay · Alipay

Headquarters

4S: Kowloon, Hong Kong

JamboSim: Almere, Netherlands

Legal entity

4S: Wans Technology Limited

JamboSim: Goomla B.V. (Netherlands, KVK 39101067, VAT NL818542366B01)

Founded

4S: Not confirmed yet

JamboSim: 2026

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

JamboSim -10% ESIMKART10

4S eSIM vs JamboSim — common questions

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

Compare 4S eSIM and JamboSim by destination

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