4S eSIM eSIM – Review, Test & Promo Code 2026

🌍

Countries covered

200 countries

💶

Starting at

3,70 €

📶

Network

5G

📊

Data

Starting at 500 MB

❌

Calls/SMS

No

Extensive coverage in 200+ countries, ideal for multi-destination travel.

Quick activation via QR code before departure, instant connection upon arrival.

Competitive rates from €3.70 for reliable data without expensive roaming.

Flexible hotspot and top-up for extended use.

Responsive email support for quick resolution.

Official ratings

Destinations & coverage

By region

Key points

✅

Advantages

  • ✓ Simple installation and immediate activation.
  • ✓ Affordable rates compared to airport SIM or roaming.
  • ✓ Good coverage and speeds in Europe/Asia according to feedback.
  • ✓ Hotspot allowed and easy top-up.
  • ✓ Intuitive interface on app and web.
⚠️

Disadvantages

  • ✗ Need to select network manually sometimes.
  • ✗ Limited compatibility on certain wearables.
  • ✗ Few user reviews accumulated.
  • ✗ Data-only, no calls/SMS included.
  • ✗ Variable notes on app stores.

Customer reviews

✓ Verified traveler

4/5

“

Bought 3GB Albania for $5, easy install but manual network selection needed at first, good coverage afterward.

Avril 2026

✓ Verified traveler

5/5

“

From Thailand to Taiwan, activation before departure and instant connection without adjustments.

Décembre 2025

✓ Verified traveler

5/5

“

Immediate connection upon landing in Taoyuan from Bangkok, without extra steps.

Décembre 2025

✓ Verified traveler

5/5

“

Stable for WhatsApp, navigation and streaming in London, Camden and Reading.

Décembre 2025

✓ Verified traveler

5/5

“

Perfect from the UK to Italy and Switzerland, strong signal in cities and trains.

Novembre 2025

Description

4S eSIM, offered by Wans Technology Limited in Hong Kong, provides data eSIMs for travelers covering 200+ countries with a focus on Europe, Asia, and the Americas via local/regional plans. Flexible daily, weekly, or monthly packages from €3.70 or $5, activation in taps via Android/iOS app or web. Ideal for vacations, business, or digital nomads needing reliable 4G/5G data, top-up anytime, keep main number for calls, hotspot allowed, responsive email support.

How it works

Go to https://4s.net or download the free Android/iOS app.

Sign up with email, no third-party account required.

Choose country/region, data (e.g., 3GB), and duration (e.g., 15 days).

Use card or PayPal for secure purchase.

Email arrives with QR, scan via eSIM settings on the phone.

Select partner network if needed, enable data roaming.

Test internet, top-up via app if necessary.

⚠️ If it fails

✅ Manually select the partner network in settings, enable then disable airplane mode, restart.

✅ Check device compatibility, stable WiFi connection, free eSIM space. Contact [email protected].

✅ Monitor usage in app, disable auto-updates, limit HD streaming.

✅ Limited to smartphones/tablets, check support.4s.net list.

Alternatives

FAQ

Opt for a Europe regional plan 3-10GB/7-30 days from $5, covering 47 countries with 4G/5G for navigation and streaming.

Yes, tethering/hotspot is allowed on most plans, check data limits and test on local network.

Yes for most eSIM smartphones/tablets (recent iPhones, Samsung Galaxy, Google Pixel), check support.4s.net.

Contact [email protected] quickly for technical issues, policy varies by non-activated plan.

Yes, keep physical SIM for calls/SMS and 4S eSIM for data only.

Via app or site, easy top-up without new installation, immediate activation.

No, data-only; use WhatsApp/Skype via data for comms.

Company info

Legal name: Wans Technology Limited

Address: Kowloon, Hong Kong

Email: [email protected]

Website: https://4s.net

Support

24/7

Accepted payments

Visa, Mastercard, PayPal

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