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eSIM Setup Guide

Everything you need to know about buying, installing, and using your OUDENIC eSIM.

1

Choose Your Plan

Browse our global plans and select your destination. Purchase securely with instant delivery.

2

Receive QR Code

Check your email or console for your unique eSIM QR code immediately after payment.

3

Scan & Connect

Scan the QR code with your phone to install. Turn on Data Roaming and you are online.

⚠️ Crucial Warnings Before Installation

  • Requires Wi-Fi: You MUST have a stable Wi-Fi connection to download and install the eSIM. Do not attempt to scan the QR code without internet access.
  • NEVER Delete: A QR code can only be scanned once. If you delete your eSIM profile, it is permanently destroyed and cannot be recovered or refunded.
  • 裝置支援警告：中國大陸版本的 iPhone 和大部分安卓設備不支持 eSIM。請在嘗試安裝前，確認您的手機是否支援 eSIM（可撥打 *#06# 確認是否顯示 EID）。

Installation Instructions

Apple iPhone

  1. Fastest Way: 1‑Click Install
    If you are viewing your eSIM Console on your iPhone, simply tap the black 1‑Click Install button. Your iPhone will automatically open the setup screen!
  2. Or install via QR Code:
  3. Open Settings: Go to Settings and tap Cellular.
  4. Add eSIM: Tap Add eSIM or Add Cellular Plan.
  5. Scan QR Code: Select "Use QR Code" and scan.
  6. Activate Service: Follow the prompts and ensure Data Roaming is ON.

Android Device

  1. Open Settings: Go to Settings > Network & Internet.
  2. Add Network: Tap the + icon next to Mobile network.
  3. Download eSIM: Select "Download a SIM instead?" and scan.
  4. Activate Service: Turn on the eSIM and verify Data Roaming is ON.

Frequently Asked Questions

When will I receive my eSIM?

Instantly. Your QR code and installation details are delivered immediately after payment, both on-screen and via email.

When should I install my eSIM?

We recommend installing your eSIM before you travel, while you have a stable Wi-Fi connection. Most plans only activate and start counting days once you connect to the supported network at your destination, so early installation won't waste your plan.

Can I keep my original phone number?

Yes. The eSIM works as a separate data plan. You can use both your physical SIM and eSIM simultaneously, and your original number stays unchanged.

Does this eSIM come with a phone number for calls and texts?

Our travel eSIMs are data-only plans and do not include a phone number for traditional calls or texts. You can seamlessly use VoIP apps like WhatsApp, LINE, WeChat, FaceTime, and Skype for communication.

Can I share my data via Mobile Hotspot?

Yes! Our plans support mobile hotspot (tethering), allowing you to share your internet connection with travel companions or your laptop.

Can I delete and reinstall my eSIM?

NO. A QR code can typically only be scanned once. If you delete your eSIM, the plan will be permanently lost and cannot be recovered. If you experience connection issues, try toggling Airplane Mode, restarting your phone, or checking your Data Roaming settings, but never delete the eSIM.

What if I arrive and have no internet connection?

First, ensure the eSIM is turned ON in your cellular settings. Second, make sure your default line for Mobile Data is set to the eSIM. Most importantly, ensure "Data Roaming" is toggled ON for the eSIM. If it still doesn't work, check your email instructions for manual APN settings.

What happens when my data runs out?

Your service continues until the validity period ends, even if data is exhausted. You can easily purchase a new plan to continue.

Can I use an eSIM inside Mainland China? / 我可以在中國內地使用 eSIM 嗎？

Yes! You can purchase and use our eSIM data plans for Mainland China. However, you must first ensure your device has eSIM hardware. Most smartphones manufactured for the Mainland China market (including iPhones and domestic brands) only have physical SIM slots. If you purchased your phone outside of China, it likely supports eSIM. To be certain, dial *#06# on your phone. If an "EID" number appears, your device is eSIM compatible.絕對可以！您可以使用我們的 eSIM 方案於中國內地漫遊上網。但請先確認您的行動電話是否具備 eSIM 功能。由於大部份於中國內地購買的行動電話（包括國行版 iPhone 及各大國產品牌）均採用實體雙卡槽設計，並不支援 eSIM。若您的行動電話是在中國以外的地區購買，通常會支援。為確保萬無一失，請在行動電話撥號介面輸入 *#06# -- 若畫面顯示「EID」號碼，即表示您的行動電話支援 eSIM。

What do product tags like "IP:SG" or "Non-hkip" mean?

These tags indicate how your internet traffic is routed and what IP address you will receive:
  • IP:SG / IP:UK: This indicates the server location. For example, "IP:SG" means your traffic routes through Singapore, giving you a Singapore IP address. This helps bypass local internet firewalls.
  • Non-hkip: This means the IP address is NOT from Hong Kong. This is crucial for accessing certain apps like TikTok, which are currently restricted on both Mainland China and Hong Kong networks.

Can I use TikTok, ChatGPT, or Gemini with this eSIM? / 我可以使用 TikTok、ChatGPT 或 Gemini 嗎？

Yes, you can! Access to AI platforms (like ChatGPT and Gemini) and certain social apps (like TikTok) depends on the IP routing of the eSIM. Since these services restrict access from Hong Kong and Mainland China IPs, you simply need to choose an eSIM with a "Non-hkip" tag or a foreign routing tag (such as "IP:SG" or "IP:UK"). As long as the traffic is not routed through Hong Kong or Mainland China, you will have unrestricted access to them.是的，絕對可以！能否使用 AI 平台（如 ChatGPT、Gemini）與特定社群軟體（如 TikTok 國際版抖音）取決於 eSIM 的 IP 路由。由於這些服務限制了來自香港和中國內地 IP 的存取，您只需要選擇帶有「Non-hkip（非香港 IP）」標籤或國外路由標籤（如「IP:SG」或「IP:UK」）的 eSIM 即可。只要流量不經過香港或中國內地，您就能不受限制地完美解鎖並使用這些服務。

Which devices support eSIM?

Most modern smartphones support eSIM, including iPhone XS and later (outside Mainland China), Google Pixel 3 and later, and Samsung Galaxy S20 and later.

Still need help? Our support team is here to assist you.

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