eSIM for Spaniards Traveling to Thailand — Complete Guide

If you're traveling from Spain to Thailand, you already know that roaming with your local carrier can be a very unpleasant surprise when you return: bills of tens or even hundreds of dollars/euros for a few days of data. There's a much smarter solution: a specific eSIM for Thailand.

In this guide, we'll explain exactly how it works, how much you can save compared to roaming with your Spanish carrier, and how to activate your PuraSim eSIM before boarding your flight.

With PuraSim, you have local data in Thailand from the moment you land, at local prices, with no commitments and without changing your physical SIM.

Roaming from Spain to Thailand: what it really costs

Spanish carriers offer international roaming packages for Thailand, but prices are rarely competitive. Depending on your carrier, a day of data in Thailand can cost you between 15-25 USD/EUR per day.

Let's look at a real example: if your trip to Thailand lasts 10 days and you use data moderately (maps, messages, social media), with traditional roaming you could pay between 150 and 250 euros/dollars just for connectivity. With a PuraSim eSIM for Thailand, the same usage would cost a fraction.

In addition to the cost, roaming has other limitations:

• Reduced speed often to 3G or even 2G
• Very low daily data cap before your speed is cut off
• You need to activate the service before you leave (and pay for it even if you don't use it)

A PuraSim eSIM eliminates all these problems: you pay once for the GB you need, you get real 4G/5G speed, and you activate it only when you need it.

How an eSIM for Thailand works

The eSIM (embedded SIM) is a digital SIM that lives inside your phone. There's no physical card to insert: you download the carrier profile using a QR code and you're done. Your phone can have several eSIMs installed simultaneously and switch between them in seconds.

For travelers from Spain to Thailand, the process is like this:

1. You buy your data plan on purasim.com before you leave
2. You receive the QR code by email
3. You install the eSIM on your phone from home (in 5 minutes)
4. When you land in Thailand, you activate the eSIM and you already have local data
5. Your Spanish SIM still works for receiving calls and SMS

No need to go to any store. No need to queue. No need to look for a phone shop when you arrive at Thailand airport. You arrive and already have internet working.

How many GB do you need for Thailand?

For a trip from Spain to Thailand, our recommendation is 15-20 GB for 14 days. This is enough for most common uses: Google Maps all day, WhatsApp with family and friends in Spain, Instagram, occasional searches, and an occasional video call.

Breakdown of typical daily consumption:

• Google Maps actively navigating: ~150 MB/day
• WhatsApp with messages and photos: ~100 MB/day
• Instagram and social media (no video): ~300 MB/day
• Searches and websites: ~100 MB/day
• Estimated total: 600-700 MB/day for moderate use

If you're going to work remotely, make frequent video calls, or upload real-time content, consider a higher plan. PuraSim plans have top-up available if you run out, so you can always extend.

Tip: Flights from Spain to Thailand make a stopover in Dubai, Doha, or Abu Dhabi; Gulf airports have WiFi to activate the eSIM before Bangkok.

How to activate the eSIM before your flight

The best thing about PuraSim eSIMs is that you can have it ready before leaving Spain. The installation process takes about 5 minutes and you only need WiFi:

1. Check compatibility: make sure your phone supports eSIM (iPhone XS or higher, Samsung Galaxy S20+, Google Pixel 3+ and many more).
2. Buy your plan on purasim.com. Select Thailand as the destination and the GB plan you need.
3. Install the eSIM: open the email with the QR code and go to your phone's Settings to scan the code and download the profile.
4. Configure the eSIM: give it a recognizable name (e.g., "PuraSim Thailand") and make sure it's configured for data but NOT for calls or SMS (you keep those on your Spanish SIM).
5. Activate it upon arrival: on the plane, you can have the eSIM installed but inactive. Upon landing in Thailand, go to Settings → Mobile Data and activate the PuraSim eSIM.

In less than 5 minutes after landing, you will have full data in Thailand without having left the airport.

Tips for travelers from Spain to Thailand

Beyond connectivity, here are some specific tips for travelers from Spain:

• Download everything before you leave: offline maps of Bangkok, Chiang Mai, Koh Samui, and Phuket in Google Maps, playlists on Spotify, Netflix episodes for the flight. In the first hours of the flight, you won't have data.
• Notify your bank: many Spanish banks block transactions in Thailand for security reasons. Inform them of your trip to avoid having your card blocked at the least opportune moment.
• WhatsApp will work perfectly: with the active eSIM, you can call and talk to family and friends in Spain at no additional cost for international calls.
• Save documents offline: scan your passport, travel insurance, and reservations and save them on your phone. If there's a moment without data, you'll still have access.

And remember: Flights from Spain to Thailand make a stopover in Dubai, Doha, or Abu Dhabi; Gulf airports have WiFi to activate the eSIM before Bangkok.

With PuraSim connected, your trip from Spain to Thailand starts seamlessly from the very first moment.

Frequently asked questions

Escrito por Marc González Sáez Fundador de PuraSim y especialista en eSIM y conectividad para viajeros. Lleva años ayudando a viajar conectado por todo el mundo sin pagar de más por el roaming, y prueba personalmente las eSIM en cada destino antes de recomendarlas.