The only second mobile number app
Available on the iOS App Store and Google Play Store
Most international mobile plans can quickly become expensive, especially with roaming charges from providers like AT&T or Samsung adding to your monthly costs. SLYNUMBER offers a smarter solution for travelers heading to Spain—our eSIM data plans provide fast, reliable connectivity with flexible pricing and no hidden fees, making it easy to stay connected while abroad. Plus, we have excellent customer support that can help you out whenever you need it.
Rated by 5,500 users
Activate from the home screen.
Complete the one-time eSIM purchase.
Follow the installation instructions.
Getting started with a Spain eSIM plan is simple and seamless for both iPhone and Android users. With SLYNUMBER's global eSIM service, you can use your number not just in Spain, but across the globe. We’re confident our flexible and affordable plans are among the best options available for international travelers using smartphones to travel.
Purchase a SLYNUMBER eSIM with the amount of data you need — no need to choose a destination. Our eSIM works seamlessly across borders, including full coverage in Spain.
You’ll receive your travel eSIM instantly after purchase via QR code, with the option to install it manually if preferred. Add it to your device before traveling for a smooth start.
When you arrive in Spain, activate your SLYNUMBER eSIM to get connected instantly. There's no need to switch SIM cards or worry about roaming fees—just fast, reliable mobile data the moment you land.
Manage your data with ease using the SLYNUMBER app on your iPhone or Android device. Track usage, add more data, or switch plans anytime—no contracts, no hidden charges, just full control at your fingertips.
We believe we have the best eSIM plan around. Whether you are in Madrid, Barcelona, or somewhere else in Spain, we’ve got you covered.
SLYNUMBER's eSIM works seamlessly in Spain and across the globe, with no roaming charges or long-term commitments. Simply pay for the data you need, exactly when you need it.
Your eSIM is delivered instantly to your email as a QR code. Set it up in just minutes, no physical SIM card, no delays. It’s quick, easy, and ideal for both new and returning users.
Use WhatsApp in Spain or calls, texts, and location sharing without changing your number.
We offer around-the-clock customer support via email and chat, wherever you are in the world. Our support team is here for you when you need it the most. No matter if you are a first time purchaser or a long-time user, you get the same legendary support service.
Easy as 1-2-3!
With SLYNUMBER's eSIM and phone number, you can make calls, send text messages, and stay connected on WhatsApp using your existing number, all through your data connection.
You need to make sure that you have a compatible device
Once you've scanned the QR code and installed your eSIM, wait until you arrive in Spain before activating your data. To ensure full access, make sure data roaming is turned on in your device settings.
The possibilities are endless!
You can use your data to access your WhatsApp number to make calls and send messages while traveling.
Use SLYNUMBER’s eSIM internet access to post stories and pictures while abroad.
No need to rely on cafe wi-fi or sketchy internet. Use your eSIM data to quickly create and upload content for your followers.
You don’t have to worry about getting lost in unfamiliar places, as your eSIM will provide reliable connectivity to access Google Maps.
Available on the iOS App Store and Google Play Store