Saily - 간편하고 안전한 여행용 eSIM ‪앱‬ 4+

As a first time eSIM user I had a bit of trepidation but this app worked flawlessly for me. I guess if you need a local phone number this isn’t the way to go, but I just mostly wanted Maps and email and the ability to send iMessages (only Blue works), use FaceTime, WhatsApp, and generally feel connected. Being on an unlimited data plan at home I didn’t really have a sense of how much data I’d need. Bought 1gb for 3 days in London and 10gb for 30 days in Spain (was only there for 14 days but that wasn’t an option). Left each country with data to spare.

So I spent a total of about $21. My carrier’s International Plan would have cost $170.

Easy to set up. I just followed their instructions to the letter. I guess my only slight complaint is in the wording of the installation instructions - which at one point say something like Activate your SIM (which can be done anytime up to 30 days before you actually touch down in your new country) but that is different than the actual Activation - which shouldn’t happen until just before you arrive at your destination (while you still have internet access) as that begins your clock.

Another thing I noticed - that wasn’t a problem - is that in the UK my eSIM didn’t work with my VPN active, but it did in Spain. Different rules for different carriers I suppose.

Bottom line it was easy to use, did exactly what I needed it to do and saved me a bunch of dough.

Hi! We are glad to hear you enjoy using our services! Thank you for your amazing review!💛

I bought 10 GB 30 day package for Taiwan and used it in June 2025. I traveled most of the island - everywhere that my local counterpart had cell service, I had it too. The setup was incredibly easy once I got my regular mobile service provider in the USA to unlock my phone. I would not hesitate to use this again. I only used 4.45 GB in 2 weeks, and was only on wifi in the evenings at my lodging location. However, I did turn off data usage on all the apps except for the ones I regularly use like email, messaging, maps, and safari browser. Find My apparently uses a lot of data but I turned it off when I had my Airtag’d items secured, and turned it back on when I needed it.

Hi there. Thanks so much for the detailed feedback! We're really glad to hear the setup went smoothly and that the service kept up with your travels across Taiwan. Sounds like you managed your data use smartly, too. We’d be happy to have you back anytime! 🌊

Long time Airalo user trying something different given the offers and lower rates. Unfortunately you get what you pay for. The service is usually performing much worse than my main SIM card running on the exact same networks (weaker/no signal). It will too often drop the signal entirely while my other SIM has a full signal. The speeds are also not super great, only getting LTE while my main SIM gets 5G on the same network. The app is also not great. It seems like the app doesn’t do anything client side, so if I want to open it up and see how much data I have left when I’ve seemingly run out, nothing will load. Just blank screens until I get on WiFi to see what happened. Reloading when I might have low data left, or slow speeds on my other SIM card, is also very difficult because the reload pages are in-app browser pages. Likely will not be returning when this trip is over.

Hello and thank you for your extensive review and feedback! We'll use your insights to continue improving our service further.