4S eSIM vs CloudOn

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

4SCloudOn

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 CloudOn

ID verification

4S: Not confirmed yet

CloudOn: 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.

CloudOn: Full refund only if never installed/activated, requested within 30 days of purchase. Once activated: generally non-refundable, except a partial refund for unused data if usage is minor AND a verified network/technical failure prevented service. Discount-code purchases are non-refundable once activated. DTAC Thailand 50GB/10-day and Unlimited plans follow a separate, per-plan refund policy.

Validity starts

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

CloudOn: Validity starts on first network connection, not at purchase or installation - a 7-day plan installed a week early still gives the full 7 days once first connected.

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.

CloudOn: Unlimited plans include a fair-use high-speed data allowance before speeds are reduced for the rest of the validity period - the exact threshold and reduced speed vary by plan and are stated on that plans own page.

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.

CloudOn: Supported - top-ups add to the existing eSIM directly from the CloudOn account, no new QR code or 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.

CloudOn: Not supported - eSIM QR codes are single-use. Once an eSIM is deleted or removed from a device it cannot be reinstalled, reassigned, or reissued.

Billing currency

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

CloudOn: CloudOn supports USD and BDT: prices are shown in your chosen currency at checkout (BDT can also be paid via bKash), with exchange rates set by Stripe at purchase.

Support

4S: Email · Live chat · Help center

CloudOn: Live chat · Email · WhatsApp · Help center · 24/7

Payment

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

CloudOn: Card · PayPal · Apple Pay · Google Pay

Headquarters

4S: Kowloon, Hong Kong

CloudOn: Japan

Legal entity

4S: Wans Technology Limited

CloudOn: Gold Lavender Co., Ltd.

Founded

4S: Not confirmed yet

CloudOn: Not confirmed yet

Comparison by eSIMKart

Discount codes

4S -15% ESIMKART15

CloudOn -10% ESIMKART

4S eSIM vs CloudOn — common questions

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

Compare 4S eSIM and CloudOn by destination

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