GigSky eSIM Review: Cruise Coverage, Free Trial, 15% Off

ESIMADVICE LISTING Verified 3,206 live plans · 188 countries

GigSky review: our honest take

GigSky is one of the few travel eSIM providers that covers you beyond dry land: alongside 1767 live plans across 188 countries, it sells dedicated cruise, ferry and inflight eSIMs that keep working once your ship is out at sea. Everything runs through the GigSky app, where new users get a free 100MB trial plan without entering a card, and plans only start counting down once your device connects to a network inside the coverage area. With the ESIMDUDE code applied on esimadvice.com, its plans start at $2.99 before the extra 15% comes off.

Match the plan to your trip length and expected data usage before choosing GigSky.

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Confirm final taxes, activation timing, refund terms, and supported networks on the provider checkout page.

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🇧🇦Bosnia and Herzegovina

GigSky vs other eSIM providers

How GigSky compares with providers we also list — by the numbers.

FEATURE

GigSky THIS PAGE

Travelsim Asia

Nomad eSIM

Countries covered

188

120

185

From price

$2.54

$0.99

$2.00

Live plans

3,206

76

1,297

eSIMAdvice coupon

✓ Yes

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👍 What we like

✓Rare cruise, ferry and inflight eSIM plans that work at sea, where normal travel eSIMs go dark

✓Free trial data plan in the app with no card required, so you can test the network before buying

✓Wide catalog: 1767 live plans across 188 countries, including hundreds of unlimited-data options

✓Validity starts on first network connection in the coverage area, not at purchase, so you can buy before you fly

✓Cheap entry point — live plans from $2.99, before the extra esimadvice.com discount

✓Extra perks for eligible Visa cardholders, including complimentary data and automatic plan discounts in the app

👎 Worth noting

–Strict no-refund policy: eSIMs and top-ups are non-refundable even if unused, with exceptions only for service failures on GigSky's side

–No pay-as-you-go or no-expiry plans in the catalog, so every plan runs on a validity clock

–Cruise and combined Cruise+Land plans can start their countdown at install if you are already in a covered area, which is easy to trip over

–Buying and managing plans is tied to the GigSky app and an account rather than a simple web checkout

How GigSky works

1Pick a plan

Choose a GigSky plan above by destination, data, and validity. Prices already include any eSIMAdvice coupon.

2Install over Wi-Fi

Buy through the provider, then scan the QR code or use their app to add the eSIM to your phone before you travel.

3Connect on arrival

Turn the eSIM line on for data when you land — your main SIM stays active for calls and texts.

Supported devices

GigSky works on any eSIM-capable, carrier-unlocked phone. Common examples:

iPhoneiPhone XS / XR and newer — every iPhone 11–16, SE (2020+), incl. US models that are eSIM-only

Samsung GalaxyS20–S25 series, Note 20, Z Fold / Z Flip (all), A54 / A55 and newer A-series

Google PixelPixel 3 and newer — Pixel 6–9 series fully supported (carrier-unlocked)

iPad & tabletsCellular iPads (2019+), Galaxy Tab S9+; data plans work the same way

Other brandsMotorola Razr/Edge, Xiaomi 13+, Oppo Find, Huawei P40+ — most 2019+ flagships

Tip: open Settings and look for "Add eSIM" or "Add cellular plan" to confirm your device supports eSIM. Your phone must also be carrier-unlocked.

Check your exact phone → Full compatible-device list →

About GigSky

GigSky is app-first: you create a free account in the GigSky app (iOS or Android), which immediately unlocks a 100MB trial plan so you can test coverage before paying, then buy and install your travel plan from inside the app (QR-code installation is also supported). Validity does not start at purchase — the clock starts when your device first connects to a network in a location the plan covers, so you can buy at home before a trip. One caveat: if you buy a plan that also covers your current location (common with Cruise+Land plans), it activates as soon as the eSIM installs, so GigSky itself recommends installing shortly before departure or keeping mobile data off for that eSIM until you need it. Cruise plans begin working once the ship is about 12 nautical miles offshore, typically about an hour after leaving port. Top-ups and auto-renewal are handled in the app.

Countries covered188

Live plans3,206

VerifiedYes

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GigSky — quick answers

What is the cheapest GigSky plan and how big is the catalog?

On esimadvice.com we track 1767 live GigSky plans covering 188 countries, with prices starting at $2.99. The catalog includes hundreds of unlimited-data plans, mostly for single destinations and shorter trips, but no pay-as-you-go plans without an expiry date.

Is there a GigSky discount code?

Yes. The code ESIMDUDE gives 15% off GigSky plans, and it is applied automatically to the prices you see on esimadvice.com — no need to type it in at checkout.

When does a GigSky plan actually start — at purchase or first use?

Neither at purchase nor strictly at first use: the validity clock starts when your device first connects to a network in a location the plan covers. That means you can safely buy before a trip, but if the plan also covers where you are now (as Cruise+Land plans often do), it activates as soon as the eSIM is installed, so GigSky recommends installing just before departure or keeping the eSIM's mobile data off until you need it.

Does GigSky really work on cruise ships?

Yes — cruise coverage is GigSky's signature feature. Its cruise, ferry and offshore eSIMs use the ship's onboard Cellular at Sea network, with service beginning once you are about 12 nautical miles offshore, typically about an hour after the ship leaves port; Cruise+Land variants also cover the ports you visit. Ordinary land eSIMs go quiet at sea, so this is a genuinely distinct product.

Can I try GigSky for free before paying?

Yes. Creating a free account in the GigSky app unlocks a 100MB trial data plan with no card required, so you can verify coverage on your route first. Eligible Visa cardholders can also claim complimentary data allowances and automatic discounts by verifying their card in the app.