GigSky eSIM review: plans, prices and how it compares with Airalo

What is GigSky eSIM?

GigSky sells data-only travel eSIMs through its app and website. Its site describes coverage in more than 200 countries, regions and cruise ships, with fixed-data and unlimited plans, regional plans, cruise packages and a subscription called GigSky One for trips of 30 days or more. GigSky describes itself as a mobile operator working directly with network partners, rather than a reseller. We have not checked that claim.

New customers can claim a free 100MB plan, valid for 7 days, with no credit card needed. GigSky labels it "available for a limited time" without an end date. Some Visa cardholders get complimentary data too, which GigSky puts at up to 3GB in more than 175 countries, terms applying. Our free eSIM trial page covers offers like these.

This is desk research from GigSky's own pages. We have not bought or tested a GigSky plan.

What do GigSky eSIM plans cost?

These were GigSky's fixed-data prices on 10 November 2026, in US dollars. Most carried a "Save 5%" markdown with no end date shown; the figures below are the marked-down prices, with the full price in brackets.

GigSky also sells unlimited data by the day, from 1 to 30 days. The ladder was identical on all four pages we opened: $3.32 for 1 day, $9.97 for 3, $23.27 for 7, $40.37 for 14 and $62.69 for 30, each after the same 5% markdown.

Is GigSky unlimited really unlimited?

Not at full speed. GigSky's FAQ says speed stays high up to 3.5GB in a 24-hour window, then slows until it resets the next day. It adds that messaging, maps and browsing work normally after that, and that streaming slows down. To its credit, it states the number. One other FAQ answer refers to a "monthly high-speed allowance" instead, which doesn't match the daily figure, so treat 3.5GB a day as GigSky's main statement.

Is GigSky data only, and can you hotspot?

GigSky is data only. Its FAQ says there is no phone number on a GigSky eSIM, and warns you not to set your default voice line to the GigSky plan, because that would deactivate your voice line. Your home number stays on your normal SIM, though your home network may charge you if you use it abroad.

Hotspot is allowed. The FAQ says hotspot is unlimited with the GigSky eSIM, so a laptop, tablet or travel companion can connect through your phone.

How do GigSky top-ups and renewals work?

On a fixed plan, GigSky sends a notification at 80% used, with a top-up option in the app. On an unlimited plan it tells you as the plan nears expiry, and you decide whether to add more. You can install a plan up to a year after buying it, and the same eSIM can be reused for later trips.

Renewal needs watching. GigSky's FAQ says all plans are set to auto-renew at the end of each cycle, that you can switch this off, and that you get an email each time a renewal payment goes through. If you only want one trip's worth of data, turn auto-renew off after you buy.

What is GigSky's refund policy?

GigSky's FAQ gives two answers. One says no refunds are offered once purchased, but you can cancel renewal at any time. Another says refunds are available and evaluated case by case, processed in 5 to 7 days once approved. If the eSIM never works, GigSky says to open the app, go to Transaction History, choose the purchase and tap Request Refund. So there is a clear route for an eSIM that never works, and much less certainty for a change of mind.

Which phones work with GigSky?

You need an eSIM-compatible, unlocked phone. GigSky's compatibility page offers a short quiz and suggests dialling *#06#: if an EID appears, the device supports eSIM. The model lists did not load in the text we could read, so check our eSIM compatible phones list as well.

GigSky vs Airalo, Nomad and the other alternatives

Here is GigSky's 10GB, 30-day price beside the same size from the six brands we cover, using our verified records read on each seller's own site. GigSky's prices were read on 10 November 2026; the others up to three months earlier.

Brand	Japan	USA	Thailand	Europe	Prices read
GigSky	$15.95	$20.42	$9.30	$21.84 (45 countries)	10 Nov 2026
Airalo	$18	$22.50	$11	$14 (Spain only)	13 Aug 2026
Nomad	$16	$25	$10	$14 (Spain only)	17 Aug 2026
Saily	$17.99	$22.99	$10.99	$15.99 (Spain only)	13 Aug 2026
Holafly	unlimited only	no verified price	no verified price	unlimited only	18 Aug 2026
eSIMCard	no verified price	no verified price	no verified price	no verified price	none stored
eSIM Go	no verified price	no verified price	no verified price	no verified price	none stored

We hold no verified regional Europe price for any of the six, so that column sets GigSky's 45-country plan against plans that only work in Spain. It is not a like-for-like test. We did not read GigSky's Spain-only page, so we cannot say whether it would beat Airalo's or Nomad's $14 there. We have no stored prices for eSIMCard or eSIM Go.

For 7 days of unlimited data, GigSky's $23.27 compares with Airalo's $27, Nomad's $25 and Holafly's $27.50 in Japan, and with Airalo's $25 and Nomad's $32 in the USA. In Thailand, Airalo's 7-day unlimited was $21.50, a little under GigSky.

On these figures GigSky is competitive. It is a little cheaper than the verified six on a 10GB month in Japan, the USA and Thailand, and on a week of unlimited in Japan and the USA. The margin is usually $1 to $3, and most of it is the 5% markdown, which could end at any time. Its weak spots are an unclear refund promise and the auto-renew default.

Who is GigSky eSIM best for?

GigSky suits travellers who want to try before they pay, through the free 100MB plan, and anyone moving between land and sea on a cruise. Its Thailand and USA plans with long validity (20GB over 90 or 180 days) suit people who travel back to the same country through the year.

If you are visiting one European country, check a single-country plan first: GigSky's 45-country 10GB plan was $21.84, while Airalo's and Nomad's verified Spain-only 10GB plans were $14. Compare plans by cost per gigabyte on our cheapest eSIM page, or see all six brands in our eSIM providers comparison.