Bytesim eSIM – Review & Full Test 2025

🌍

Countries covered

200 countries

💶

Starting at

2,70 €

📶

Network

5G

📊

Data

Starting at 500 MB

❌

Calls/SMS

No

📱

App

iOS & Android

Extended global coverage to 200+ countries for multi-destination trips.

Affordable unlimited 5G plans with hotspot included.

Fast activation via app, no identity verification required.

Responsive 24/7 support via chat and WhatsApp.

Official ratings

Destinations & coverage

ByteSIM covers over 200 countries with focus on popular destinations, local/regional/global plans adapted to all travels.

By region

Key points

✅

Advantages

  • ✓ Intuitive app for easy purchase and management.
  • ✓ Wide choice of flexible and unlimited data plans.
  • ✓ Hotspot allowed without restrictions.
  • ✓ Efficient multichannel customer support.
  • ✓ Competitive prices from €2.7 for small volumes.
⚠️

Disadvantages

  • ✗ Data-only, no calls/SMS included.
  • ✗ 5G coverage varies depending on country/operator.
  • ✗ Limited options in some remote countries.
  • ✗ No pay-as-you-go for very light usage.

Customer reviews

App Store

4/5

“

Fast activation in China despite a small initial issue, ultra-responsive WhatsApp support. Good speed for WeChat and local apps, perfect for travel.

October 1, 2025

App Store

5/5

“

eSIM installed instantly before arrival, unlimited 5G excellent and fast. Very affordable, highly recommend.

November 1, 2025

Google Play

4/5

“

Reliable connection in Greece with 1GB/day, sufficient for my needs. Easy to use during travel.

September 1, 2025

Google Play

3/5

“

Good app but connection sometimes unstable after the first day. Support helped but disappointing for the price.

December 1, 2025

Description

ByteSIM, based in Hong Kong, offers eSIMs for travelers covering over 200 countries with data plans from 500MB to unlimited on 5G/4G/LTE. Perfect for city trips or long stays, the intuitive app allows purchase, QR code installation, and automatic activation upon arrival. Hotspot allowed, prices from $2.9 (about €2.7), data-only with no number, ideal for digital nomads and adventurers seeking reliable connectivity without costly roaming.

How it works

Install the app from the App Store or Google Play on an eSIM-compatible device.

Register via email or third-party account, without complex verification.

Select country/region and data plan (volume, duration, unlimited).

Pay via card, PayPal, or Apple/Google Pay (from €2.7).

Scan QR code or install manually via settings.

Automatic connection to local network; activate mobile data and hotspot if needed.

Direct top-up in the app if necessary.

⚠️ If it fails

✅ Check eSIM compatibility, stable WiFi connection; contact WhatsApp support.

✅ Toggle airplane mode on/off, select ByteSIM eSIM for data, restart.

✅ Check consumption in app, limit streaming/auto-updates; choose unlimited.

Alternatives

FAQ

Choose an unlimited regional Europe plan with 500MB/day on 5G, hotspot OK, for 7-10 days; about €40-60 depending on duration.

Yes, tethering/hotspot is allowed on all plans with no specific limit.

Check on bytesim.com/pages/esim-compatible-devices: iPhone XS+, Samsung S20+, Pixel 4+, etc.

Satisfaction guarantee; contact 24/7 support immediately for resolution or refund according to policy.

Yes, direct top-up via app on 'My eSIM' to extend data.

No, data-only; use WhatsApp for communications.

From 1 to 30 days, automatic activation on arrival.

Company info

Legal name: ByteSim Limited

Founders: Sunny Wong, Wilming Chou

Address: FLAT/RM 2705, 27/F, China Resources Building, 26 Harbour Road, Wan Chai, Hong Kong

Email: [email protected]

Website: https://bytesim.com

Support

24/7

chat, email, whatsapp

Accepted payments

Visa, Mastercard, PayPal, Apple Pay, Google Pay, Klarna, Afterpay

Platforms

iOS app, Android app, Web

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