You have signed your internship, booked your flight, and want your phone to work the moment you land in Barcelona, Berlin or Lisbon. That is exactly what an eSIM does: buy it before you leave, install it in two minutes, and you are online from arrival. Here is the honest comparison of the three eSIMs that are worth it for interns.
The Short Answer
| eSIM | Best for | Why |
|---|---|---|
| Airalo | Most interns | Widest country coverage, simple per-GB plans. The safe default choice, even if you travel around during your internship. |
| Saily | Security-conscious | From the makers of NordVPN, with ad and malware blocker. Data and protection in one app. |
| Yesim | Always connected | eSIM plus built-in VPN, handy if you stream a lot or use apps from home. |
Why an eSIM Instead of a Local SIM?
- Works from the moment you land. No SIM shop, no foreign-language paperwork on your first day.
- You keep your number. The eSIM runs alongside your regular SIM, so bank SMS messages and 2FA codes still come through.
- It travels with you. A regional or global plan keeps you connected on weekend trips to Lisbon or Rome as well.
- You control the cost. Fixed data plan, no roaming surprises.
The Three Options in Detail
Airalo
- 200+ countries covered
- Simple per-GB plans
- Country or regional plan
- Set up in two minutes
Saily
- By Nord Security (NordVPN)
- Ad and malware blocker
- Protection on public Wi-Fi
- Data and security in one app
Yesim
- Data and VPN in one
- Unblock home streaming
- Use region-locked apps
- No separate VPN subscription needed
Check first whether your phone supports eSIM (most iPhones from XR onwards, as well as current Samsung, Google Pixel and similar models). In your settings you will find the option to add a mobile plan via QR code.
Setup in 2 Minutes
- Buy your plan before departure while you still have Wi-Fi at home.
- Add the eSIM via QR code in your phone settings.
- Label it "Internship" so you can switch easily.
- Leave your home SIM in for calls and 2FA, select the eSIM as your data line.
- Land, turn on data, done.
In Short
Most interns are well served by Airalo. If security is a priority, go with Saily. If you want streaming and VPN, choose Yesim.
All intern deals in one place →Frequently Asked Questions
Do I need an eSIM or is a local SIM card enough?
Most interns use an eSIM for the first few weeks because it works instantly. Afterwards you can decide at leisure whether a local contract makes sense.
How much data do I need?
With Wi-Fi at the office and at home, 5 to 10 GB per month is usually enough. If you tether or stream on the go, choose a larger or unlimited plan.
Will WhatsApp and bank codes still work?
Yes. Keep your home SIM active for calls and SMS. The eSIM only carries data, so your number and 2FA codes stay unchanged.
Does it work on weekend trips?
A single-country plan does not. Choose a regional or global plan, and one eSIM covers your whole trip.
Setting up your whole internship, not just your phone? Save all your deals in one place in your dashboard: banking, insurance, housing, language and more.