Review: GigSky's Data-Only eSIM Service Offers Convenient LTE Connectivity for Travel

On a recent trip to Europe, I had a chance to try out GigSky's new pay-as-you-go cellular data plan that's available through via eSIM on the iPhone XR, XS, and XS Max.

I used GigSky's service across four countries, testing out the ease of use, the coverage, the setup process, and what it's like to use the eSIM to get cellular connectivity in another country.

Setup


Setting up the GigSky service was simple, and much more convenient than having to source a physical SIM to go along with a cellular service that uses a standard SIM. I downloaded the GigSky app, opened it up and selected the country I was visiting.

GigSky recommended that I purchase a plan once I arrived in my destination country (Czech Republic), which I did, and after the purchase was made and the payment confirmed, I was set up and ready to go.


The app downloaded the eSIM on my phone, and I was able to select it as a secondary cellular option using the Cellular section of the Settings app on the iPhone.

Service Requirements


Using GigSky's eSIM service requires an iPhone that is both unlocked and that supports eSIM, so the iPhone XS, XS Max, and XR. My carrier is Verizon and I purchased my iPhone outright, so it came unlocked by default and there was nothing else I needed to do. The GigSky eSIM just worked.


Potential customers on other carriers may need to make sure their iPhone has been unlocked before the GigSky service will work. It is not available on a device that is locked.

eSIM Usage


I activated the GigSky eSIM after arriving in the Czech Republic, and from there, I didn't need to do anything when traveling between country borders. The data plan was active no matter which European country I was in, and I didn't see anything more than a momentary lapse in service crossing borders.

When first using the eSIM, I did run into a bit of trouble. GigSky's eSIM is data only, which means there's no phone number associated with it, and I didn't think there was enough instruction on how this worked.


I initially wanted to disable my Verizon SIM to make sure I didn't actually use any Verizon data or place Verizon calls/texts, but that got me into quite a bit of trouble in practice. After turning off my Verizon number on the first day in the Czech Republic, I got separated from the people I was with.

As it turns out, disabling the primary number with no secondary number turns iMessage and FaceTime off, and I couldn't get any texts, messages, or calls to go through so I was thoroughly disconnected. There are probably similar issues when changing your main iMessage number, so when using a secondary SIM, whether it's data only or a different phone number, make sure to leave the primary enabled so iMessage continues to work.


After that little setup snafu, I re-enabled my Verizon number, set GigSky as the primary data source, and left Verizon as the secondary data source.

I'm not entirely sure how it works with other carriers, but with Verizon, TravelPass service isn't activated unless I place a phone call or send an SMS message. Because I couldn't turn it off entirely, there was one time where I pocket dialed someone and got myself a $10 daily data charge, but that was my fault.

For the majority of the trip, once I had the settings properly established, the GigSky data worked without a hitch and I didn't need to activate my Verizon travel plan.

Coverage


I tested GigSky's service across four countries in Europe: Germany, Austria, Czech Republic, and Hungary. In most of these locations, except when I was in more rural places, I had reliable, fast LTE service that led me use social networks, check mail, and watch videos with no problems.

In Hungary, specifically in Budapest, my service switched between 3G and LTE, but I was never left without any connection at all with the exception of remote areas. In the major cities, and even smaller cities, my cellular connection worked well.


GigSky's service also worked in the Bay Area of California and Washington DC, two other areas where I was able to test its reliability.

Connection is, of course, going to vary by country and this isn't a reliable metric for service in other areas, but based on this sample, in urban areas, GigSky's service is decent and comparable to LTE from a standard carrier.

Costs


In Europe, and several other countries including the United States, GigSky's service is priced starting at $10 and is available in several high speed (LTE where available) data allotments that last for varying amounts of time, so you can purchase just the data that you might need.

300MB of data is available for $10, and that data pot lasts for just a day.

You can get 500MB of data for $15, 1GB of data for $20, and 2GB of data for $30, with all of these data pots available for 15 days.


GigSky's most expensive plan is its 5GB data plan, which costs $50 and lasts for 30 days. I picked this latter option, and I used just about 5GB of data over the course of my trip. I wasn't doing anything particularly data heavy, but I was browsing the internet, checking social media, uploading images to social media, and checking and responding to emails.

Price wise, I think GigSky's options are fairly expensive, but my own carrier wasn't offering anything better. I have Verizon coverage in the United States, and Verizon's travel plan is $10 per day for 0.5GB of data and unlimited 2G data after that, which is little high speed data for a high price tag.

Some carriers have better deals, but most limit LTE access or charge quite a bit for data. T-Mobile has free unlimited 2G speeds when traveling or charges $5 per day for 0.5GB of high speed data, Sprint offers free 2G data when traveling or offers high speed data passes for $5 day ($25 per week), and AT&T charges $10 per day with LTE speeds limited to your normal data plan allotment.


It would have cost me upwards of $100 to have limited high speed data available on Verizon during my trip, so GigSky was definitely the better option. Getting SIM cards in each country or signing up for a European data plan probably would have been the most price efficient, but GigSky was the simpler option that was still better than what my carrier was offering.

App


Beyond setting up the GigSky eSIM service and activating it, the GigSky app can be used for troubleshooting and to answer commonly asked questions through a Support section. There's also an account settings option, an inbox for communicating with GigSky if there are customer support questions, and a refer a friend section for referring friends for free credit.

While using the GigSky service, I didn't really open up the app at all because many of the settings are handled through the "Cellular" section of the main Apple Settings app.

Available Countries


GigSky's data service works in more than 190 countries around the world, with a coverage map available here. All North American and nearly all European and South American countries support the GigSky service, as do many Caribbean Islands.

Service is more limited in Asia Pacific, Africa, and the Middle East, but there are a few countries where it works.

Bottom Line


After overcoming a few hiccups that come with using a data-only service as a secondary option on an iPhone, I thought GigSky was simple to use, offered great coverage that rarely left me sans cellular connection, and ultimately, convenient.

Getting a second SIM or an eSIM plan in the country that you're traveling to is an option and is potentially more affordable than GigSky, but that can be a hassle if you're visiting multiple countries.

$50 for 5GB isn't the best data deal, but I found that data pot lasted me for nearly two weeks with regular use - uploading photos to Instagram, checking my email, responding to messages, using maps, and browsing the internet - though I did connect to WiFi where available, such as in hotels.

The GigSky service worked seamlessly even as I crossed country borders in Europe, and I didn't have to hassle with swapping out SIM cards, changing my phone number and fussing with iMessage, or finding different plans in countries where I don't speak the language.

GigSky was much more affordable than the plans offered via my own carrier here in the United States (Verizon charges $10/day for 0.5GB and then unlimited 2G) and I wouldn't hesitate to use it again on another multi-country trip. I might choose something more affordable if I were going to a single country, but you can't beat the convenience of a cell phone plan you can purchase and get going right on your device.

How to Buy


To use GigSky's service through the eSIM on a compatible iPhone XR, XS, or XS Max, you'll need to download the GigSky World Mobile Data app from the App Store. From there, plans are purchased within the app at prices starting at $10.

Note: GigSky provided MacRumors with a $100 data credit for the purpose of this review. No other compensation was received.

Tags: GigSky, eSIM


Top Rated Comments

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7 months ago
Way too expensive even with its convenience. You can get like 40 GB of data for 10 € in France for example and use it all across Europe.
Rating: 8 Votes
Avatar
7 months ago
Gigsky has competiton : Truphone and Ubigi.

The convenience of having your phone number for sms and voice calls and using this worldwide data only services is priceless. It’s the reason why I upgraded from the X to XS.
Rating: 3 Votes
Avatar
7 months ago
Apple's eSIM functionality seemed great at launch but there weren't a lot of ways to implement it right at launch. This is an example of a company who is early to the game in a significant part of the new iPhones. I enjoyed the review and thought it was more relevant than a lot of other articles where money/products is exchanged with MR.
Rating: 2 Votes
Avatar
7 months ago

Maybe we’re talking about different things here. From Juli’s use case (and I’m sure many others), the biggest advantage of eSIM is being able to more simply use another number while traveling, without having to worry about accumulating exorbitant data roaming charges. Without a clear cut way of disabling data roaming, you might as well still have two phones.

I’m still not totally sure what Juli means when she says she was unreachable via iMessage to her domestic line. It still should have worked when she was on WiFi.

I guess at the end of the day, I want to have two numbers that the device can potentially respond to at any time, and I want to selectively use ONE for data. Is that possible?


I mean that when I disabled my Verizon number (in Settings, "Turn off this line") in an attempt to make sure I didn't accidentally use any VZW data, my iMessage stopped working entirely. It did not work on WiFi, and I don't know why. I didn't do further testing on this because I was in a foreign country and because removing my phone number also significantly broke things, so there may be some setup option where this does not happen. I do have email addresses associated with iMessage, but in my case, it just stopped working entirely with my primary number turned off even with GigSky associated with the secondary iMessage line.

It could have been a bug, or an early implementation issue because GigSky is data only with no associated number (which I suspect was the problem), or something that I did with the setup process. I don't know that everyone will run into this issue, but there are always going to be problems when changing or disabling the number associated with iMessage. I just wanted to make sure people are aware that things need to be set up carefully to avoid iMessage/FaceTime activation issues.

You can indeed use two numbers that can be responded to at any time while using just one for data if you set your Cellular Data setting to use the "Secondary" number while leaving the Voice line as the primary number and the iMessage line as the "Primary" number.

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Wow! That pricing! What’s the point?

Most places, picking up a SIM is no more hassle then stopping at a kiosk in the arrivals hall. Takes five minutes and most countries have outstanding travel plans for tourists.

Worse yet is that it seems there is no way to just turn OFF your domestic line, except for Wifi to keep things like iMessage active.

The eSIM implementation seems pretty half baked at this point.


This. I travel to the UK once a year on average. There's a shop in Heathrow as soon as you exit customs. £30-40 (there are cheaper options) for a relatively large amount of data from a variety of local carriers, a local number, and great coverage. Just swap a SIM card (or use an eSIM-supporting carrier) and PAYG. Just remember to use an app (e.g. 1Password) for your 2fa-enabled services instead of SMS, which is arguably more secure (and I think more convenient, at least as implemented by 1P).


In this situation, there was no kiosk at the airport terminal where I arrived in the Czech Republic, I did not speak the language, and I did not have an opportunity to visit a cellular service store because of planned activities, so eSIM was simpler for me.

A local SIM you can swap in is DEFINITELY a better deal than eSIM at this point, but I do think eSIM is simpler than having to physically swap a SIM, though. Hopefully prices are going to drop as more and more carriers implement eSIM support and the technology matures.
Rating: 2 Votes
Avatar
7 months ago
Re: Pocket dialing - I had a pocket dial with the iPhone XS; for the first time ever on any iPhone model for me. After also having a phantom flashlight activation, I finally found and turned off the irritating "Raise to Wake" and Accessibility / "Tap to Wake" which seems to have solved the problem.
Rating: 2 Votes
Avatar
7 months ago
Wow! That pricing! What’s the point?

Most places, picking up a SIM is no more hassle then stopping at a kiosk in the arrivals hall. Takes five minutes and most countries have outstanding travel plans for tourists.

Worse yet is that it seems there is no way to just turn OFF your domestic line, except for Wifi to keep things like iMessage active.

The eSIM implementation seems pretty half baked at this point.
Rating: 1 Votes
Avatar
7 months ago
This is a good write up so that people know what to expect. For infrequent travelers, the ease of it may be worth it but yikes that is expensive data.

I also have Verizon now and have that on eSIM. I have had my Three payg SIM for a few years now but now, I don't need 2 phones anymore! They have a similar type of free roaming like TMobile so when I'm back in the US, I can still use the number for work contacts. I put it back in the old spare so that it can use iMessage when in the US (Apple really needs to fix this).

Anyway, my setup is as follows and works great if you want to be able to use a phone number for texting as well.

US Carrier: Verizon on eSIM - Travel Pass has been Turned OFF so any accidental texts of calls are at the payg roaming rate. Much less than $10 for an accidental text!! Receiving texts are free but almost everyone I know uses iMessage so it's not a problem replying back.

UK Carrier:
Three on physical SIM - Feel At Home Roaming (similar to TMO Simply Global) works on PAYG SIMs as long as you aren't using up loads of data back in the US.

iMessage:
This stays on the US line the whole time.

Settings:

Data Roaming turned OFF - I switch the Data line to Three right before I take off in the US and put my phone into Airplane Mode.
Primary Line should be set to whatever country you're in. I switch it to the Three line when I land.

You can order a Three SIM from eBAY prior to your travel. You can order one already topped off and activated with an add-on. Or unactivated if you know what you're doing and how to top off UK SIMs online. The Three site DOES NOT allow US cards. The SIM stays active as long as you have a balance on your account.

I use the Three number as my local UK contact number since I travel over often enough. Data Roaming works all over the EU as well, slower in some countries than others, but mostly 4G. Check the Three sites for the countries where they have Feel At Home.
Rating: 1 Votes
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7 months ago
GigSky is great. I’m using it now in France while typing this. Yes, it’s a little expensive but a lot cheaper than Verizons international plan.
Rating: 1 Votes
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20 weeks ago

[USER=771561]@jclo[/USER] [USER=45685]@riverfreak[/USER] Pardon my ignorance, but is data roaming per (e)SIM, or global for the phone? Thanks!


You can enable or disable data roaming for the SIM that is configured to be the data SIM. You can only have one SIM/eSIM in the iPhone as data source, and both as voice and text. So you leave data roaming on and select the eSIM/SIM you want to be used for data. The other one will be voice/text only.
Rating: 1 Votes
Avatar
7 months ago
I’ve never swapped the SIM card. That’s why I like the esim. Do you lose you mobile number if you swap the sim? What if you need your assigned number for work, family, etc?
Rating: 1 Votes
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