更新時間：2026-07-02｜即時資料需以官方公告為準。

飛機一落地桃園機場，很多人第一件想搞定的其實不是行李，而是「手機怎麼上網」。這篇把台灣 eSIM 適合誰、怎麼確認手機能不能用、怎麼開通，以及跟實體卡怎麼選，一次講清楚。

以前來台灣，大家習慣在機場排隊買一張實體 SIM 卡；現在只要手機支援 eSIM，出發前就能在家裡買好、掃個 QR Code，落地開機就有網路，不用扛心找不到門市，也不用帶迴紋針換卡。簡單說，eSIM 是「嵌入式 SIM」，直接寫進手機晶片，對外國旅客最大的好處就是省下在機場排隊的那段時間。到底該選 eSIM 還是實體卡，先看這張對照表：

那到底適合誰？如果你是短期來玩的旅客、需要邊走邊查地圖與翻譯的人、想保留自己國家門號收銀行簡訊的商務客，或在台灣移動辦公的數位遊牧者，只要主要需求是「穩定上網」，eSIM 幾乎是最省事的選擇。反過來說，如果你需要一組台灣本地手機號碼（例如租屋、辦銀行帳戶、實名制外送或購物 App 驗證），單純的旅遊 eSIM 通常只給你「純數據」、不含台灣門號，這種情況建議另外到電信門市辦理含門號的預付卡或月租方案。新住民與長期居留者可以先參考我們的Taiwan Living Guide，裡面對辦門號、生活雜項有更完整的整理。

不管你選哪一家，下單前有三件事一定要先確認，不然買了也用不了。第一，手機要支援 eSIM：iPhone 大致從 iPhone XR、XS 系列（含 11 及之後機型）開始支援，iPhone 14 以後的美版更是只剩 eSIM、沒有實體卡槽；Android 這邊 Google Pixel、三星 Galaxy、部分小米與 OnePlus 較新機種（大致 2021 年後）多半支援，但同型號在不同地區（如港版）可能被閹掉 eSIM，還是以你手機的實際規格為準。最快的確認方式是 iPhone 打開「設定 → 一般 → 關於本機」，找得到「可用的 eSIM」或 EID 就代表支援。第二，手機必須是「無鎖機」：如果被原電信商綁約鎖定（SIM lock），就裝不了其他家的 eSIM，多數自購裸機都是無鎖狀態，不確定可洽原電信商。第三，通話要靠 VoLTE：台灣三大電信已於 2024 年 6 月 30 日全面關閉 3G 網路，語音通話改走 4G VoLTE，旅遊 eSIM 多半是純數據方案，用 LINE、WhatsApp 打網路電話沒問題，若你的方案含通話，記得在手機設定裡開啟 VoLTE。

四步驟開通 eSIM

各家流程大同小異，掃 QR Code 是最簡單的方式。第一步，出發前先買好：在有網路（家裡 Wi-Fi）時線上購買，收到含 QR Code 的確認信，建議在台灣行程開始日再啟用，避免效期提早開始計算。第二步，加入 eSIM：iPhone 進入「設定 → 行動服務 → 加入 eSIM → 使用 QR 條碼」，掃描信件裡的 QR Code；Android 路徑類似，在「連線／SIM 卡管理」中選擇「新增 eSIM」。第三步，設定用哪張卡上網：安裝後可將 eSIM 設為「行動數據」主要卡，原本的實體卡保留收簡訊，記得把數據漫遊（Data Roaming）打開，eSIM 才能連上台灣的網路。第四步，落地開機測試：抵達台灣、關閉飛航模式後，等待幾分鐘讓手機搜尋電信網路即可上網；若沒訊號，重開機或手動選擇電信業者通常就能解決。

How do you compare plans? Look at these points

市面上 eSIM 品牌很多，價格與規格變動快，下單前一定要到官方頁面看最新方案（實際天數、價格與流量政策以官方頁面為準）。挑選時主要看這幾個面向：

If you'd rather save the time spent comparing prices and standing in line,Holafly offers unlimited-data travel eSIMs for Taiwan, connecting through a network with broad coverage and activating simply by scanning a QR code online—a great fit for first-time visitors who just want to get online quickly. The actual number of days, price, and data policy are subject to the official page.

View Holafly Taiwan eSIM plans

The above is an affiliate promotional link; if you purchase through it we may earn a small commission at no extra cost to you. See ouraffiliate disclosure statement。

若你偏好含景點門票或機場接送的套裝，也可從票券平台一起購買上網方案，順路把行程排好；抵達後怎麼在台灣移動、抓交通，交通細節可參考Transport Guide，或直接從Taiwan Travel Guidefrom here.

Frequently Asked Questions

Can an eSIM be activated only after landing in Taiwan?

Yes. As long as your phone can connect to the internet at the moment of activation (for example, airport or hotel Wi-Fi), you can scan the code and install it. That said, we strongly recommend installing it before you leave, while you still have stable Wi-Fi, so you're online the moment you power on after landing—that's the least likely to cause problems.

Once I install an eSIM, can I still use my original phone number?

Yes, if your phone supports dual SIM. Set the eSIM as your primary card for data and keep your original physical SIM, and you can still receive texts and calls on your original number (this will incur roaming charges on your original number, so we recommend turning off data roaming on that card).

Does the eSIM include a Taiwanese phone number?

Most travel eSIMs are "data-only" and don't include a Taiwanese phone number. If you need a local number for identity verification, renting an apartment, or opening an account, please visit a carrier's store to sign up for a plan that includes a phone number.

Can one phone have multiple eSIMs installed?

Newer phones can usually store several eSIMs, but the number that can be active at the same time is limited (often one or two). You can install them ahead of time and switch to the one you want to use after you arrive.

Is unlimited data really completely uncapped?

Most "unlimited" plans have a Fair Use Policy (FUP): everyday use won't get cut off, but if your usage is extremely heavy, speeds may be throttled. For the actual policy, always refer to the official terms of the plan you purchase.