4S eSIM vs Billion Connect

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

4SBillion Connect

Unlimited data ✓ Yes ✓ Yes

Regional bundles ✓ Yes ✓ Yes

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 Billion Connect

ID verification

4S: Not confirmed yet

Billion Connect: Required for some countries (passport/ID)

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.

Billion Connect: Refundable before activation; once activated/used, refund rights end; third-party partner purchases are excluded from refunds.

Validity starts

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

Billion Connect: Most plans start when the eSIM first connects to a supported network at your destination (some start on installation, as the product page states); activate within 90 days of purchase; a day = 24 hours from activation.

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.

Billion Connect: Set per plan on the product page: most plans drop to a reduced speed (typically 128–384 kbps) after the high-speed allowance, daily or total, instead of cutting off; a few plans stop at the 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.

Billion Connect: Standard eSIMs can't be topped up; buy a new plan when data runs out. eSIM Air supports top-ups anytime 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.

Billion Connect: Most eSIMs can be reinstalled or moved to a new phone by rescanning the original QR code; plans marked non-reinstallable on the product page are lost once deleted.

Billing currency

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

Billion Connect: Multi-currency checkout: USD, HKD, JPY, KRW, EUR, CNY, TWD, CAD, SGD, THB, MYR.

Support

4S: Email · Live chat · Help center

Billion Connect: Email · Help center

Payment

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

Billion Connect: Card · PayPal

Headquarters

4S: Kowloon, Hong Kong

Billion Connect: Hong Kong

Legal entity

4S: Wans Technology Limited

Billion Connect: WEITAIGE TECHNOLOGY CO., LIMITED

Founded

4S: Not confirmed yet

Billion Connect: 2015

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

Billion Connect -10% ESIMKART10

4S eSIM vs Billion Connect — common questions

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

Compare 4S eSIM and Billion Connect by destination

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