Setting up an eSIM on your Samsung Galaxy phone gives you the freedom to add a second phone number, use a travel data plan, or separate work and personal lines — all without swapping physical SIM cards. This guide covers every Samsung model that supports eSIM, walks you through three activation methods step by step, and shows you how to manage dual SIM like a pro.

Quick Answer: Which Samsung Phones Support eSIM?

Samsung has supported eSIM since the Galaxy S20 series (2020), but there are important regional differences. Not every Galaxy phone sold in every country includes eSIM — the hardware varies by market.

Key things to know before checking the list:

• US models (S21 and later): All support eSIM. However, US-sold Galaxy S20 does NOT support eSIM despite having eSIM hardware in international variants.
• Chinese, Hong Kong, and Taiwan models: Most Samsung phones from these regions do not support eSIM, even if the same model number supports it elsewhere.
• Korean models: Limited eSIM support. Only select flagship models (S23+, S24+, Z Fold/Flip 4+) support eSIM in Korea.
• International models: Broadest eSIM support across all regions.

How to check your specific phone: Go to Settings > Connections > SIM Manager. If you see an Add eSIM option, your phone supports it. If SIM Manager only shows physical SIM options, your variant does not have eSIM capability.

Samsung eSIM Support Table

Model	eSIM Slots	Nano-SIM Slots	Max Stored Profiles	Dual SIM Config	Regional Notes
Galaxy S25 Ultra	2	1 (Intl) / 1 (US)	20	eSIM+eSIM or eSIM+nano-SIM	US: 1 nano-SIM + dual eSIM; China: no eSIM
Galaxy S25+ / S25	2	1 (Intl) / 1 (US)	20	eSIM+eSIM or eSIM+nano-SIM	Dual eSIM support — new for S25 series
Galaxy S25 Edge	2	1	20	eSIM+eSIM or eSIM+nano-SIM	Slim design, full eSIM support
Galaxy S24 Ultra	1	1	20	eSIM+nano-SIM	Only 1 active eSIM at a time
Galaxy S24+ / S24	1	1	20	eSIM+nano-SIM	S24 FE also supports eSIM
Galaxy S23 Ultra	1	1	10+	eSIM+nano-SIM	S23 FE supports eSIM
Galaxy S23+ / S23	1	1	10+	eSIM+nano-SIM
Galaxy S22 Ultra / S22+ / S22	1	1	10+	eSIM+nano-SIM
Galaxy S21 Ultra / S21+ / S21	1	1	5+	eSIM+nano-SIM	S21 FE supports eSIM
Galaxy S20 (Intl only)	1	1	5+	eSIM+nano-SIM	US S20 does NOT support eSIM
Galaxy Z Fold 6	1	1	10+	eSIM+nano-SIM
Galaxy Z Fold 5	1	1	10+	eSIM+nano-SIM
Galaxy Z Fold 4	1	1	5+	eSIM+nano-SIM
Galaxy Z Flip 6	1	1	10+	eSIM+nano-SIM
Galaxy Z Flip 5	1	1	10+	eSIM+nano-SIM
Galaxy Z Flip 4	1	1	5+	eSIM+nano-SIM
Galaxy Z Flip 3	1	1	5+	eSIM+nano-SIM
Galaxy A56	1	1	5+	eSIM+nano-SIM	Available in most regions
Galaxy A55	1	1	5+	eSIM+nano-SIM	Available in most regions
Galaxy A54	1	1	5+	eSIM+nano-SIM	Only Europe, NA, Korea, Japan
Galaxy A36	1	1	5+	eSIM+nano-SIM	Check regional availability
Galaxy A35	1	1	5+	eSIM+nano-SIM	Check regional availability

Not supported: Galaxy S20 (US), Galaxy A series older than A34, Galaxy Note series (all models), Galaxy S10 and older. All Galaxy phones sold in mainland China do not support eSIM regardless of model.

Before You Start: Pre-Setup Checklist

Before adding an eSIM to your Samsung phone, go through this checklist to avoid common activation failures:

• Stable Wi-Fi connection. You need internet access to download the eSIM profile. Mobile data from an existing SIM works too, but Wi-Fi is more reliable.
• Phone is carrier-unlocked. If you bought your phone from a carrier (T-Mobile, Verizon, AT&T, etc.), it may be locked to that network. A locked phone can only activate eSIMs from its own carrier. To use a travel or third-party eSIM, you need an unlocked phone. Check with your carrier or go to Settings > Connections > SIM Manager — if you can add eSIM from any provider, you are unlocked.
• QR code or activation code ready. Your eSIM provider should have given you a QR code image, an activation link, or an SM-DP+ address with an activation code. Have it accessible on another device or printed out.
• Software is up to date. Go to Settings > Software Update > Download and Install. Running the latest One UI version ensures the smoothest eSIM experience.
• EID number (optional but helpful). Some providers ask for your phone’s EID (eSIM identifier) during purchase. Find it at Settings > About Phone > Status Information > EID.

Method 1: QR Code Scan (Most Common)

This is the method used by the vast majority of eSIM providers, including Airalo, Holafly, Saily, Nomad, and most carrier eSIM activations.

What you need: A QR code from your eSIM provider, displayed on another screen or printed on paper.

Step 1: Open the Settings app on your Samsung phone.

Step 2: Tap Connections.

Step 3: Tap SIM Manager (on older One UI versions, this may say “SIM card manager”).

Step 4: Tap Add eSIM.

Step 5: Select Scan QR code. Your phone’s camera will activate.

Step 6: Point the camera at the QR code. Hold your phone steady about 6-8 inches (15-20cm) from the code. The phone will detect and read the QR code automatically.

Step 7: When the “Add mobile plan” screen appears showing your carrier details, tap Confirm (or Add).

Step 8: Wait for the eSIM profile to download and install. This typically takes 1-5 minutes depending on your internet speed and the carrier’s server.

Step 9: When prompted, give your new eSIM a custom label. Tap the default name and change it to something descriptive like “Travel Data,” “Japan eSIM,” or “Work Line.”

Step 10: Choose your preferred SIM settings — which SIM to use for calls, texts, and data. (See the Dual SIM Management section below for detailed guidance.)

Pro tip: If the QR code is on your own phone (like in an email), take a screenshot first. Then open the screenshot in your Gallery, zoom in on the QR code, and use a second device to scan it. Alternatively, choose “Enter activation code” (Method 2) and type in the details manually.

Method 2: Activation Code (Manual Entry)

Use this method when you cannot scan a QR code — for example, if your eSIM details were sent as text, the QR code will not scan properly, or you are setting up remotely.

What you need: An SM-DP+ address and an activation code from your eSIM provider. These are usually provided as a single string that looks like: LPA:1$smdp.example.com$ACTIVATION-CODE-HERE

Step 1: Open Settings > Connections > SIM Manager.

Step 2: Tap Add eSIM.

Step 3: Instead of scanning, tap Enter activation code (at the bottom of the QR scan screen).

Step 4: In the Server address (SM-DP+) field, enter the SM-DP+ address. This is the part between the first $ and the second $ in the LPA string. Example: smdp.example.com

Step 5: In the Activation code field, enter the activation code. This is everything after the second $. Example: K2-1AB-CDG-7HY

Step 6: If your provider gave you a confirmation code, enter it in the corresponding field. If not, leave it blank.

Step 7: Tap Connect or Add.

Step 8: Wait for the download and installation to complete, then label your new eSIM.

Common mistake: Do not include the LPA:1$ prefix when entering the server address. Only enter the domain that comes after it.

Method 3: Samsung Account Transfer (Samsung to Samsung)

If you are upgrading from one Samsung phone to another and want to move your eSIM, Samsung offers a built-in transfer method through Samsung Smart Switch.

Step 1: On your new Samsung phone, open Settings > Connections > SIM Manager.

Step 2: Tap Add eSIM.

Step 3: Look for the option Transfer SIM from another device or Import SIM from another device.

Step 4: Follow the on-screen instructions. Both phones need to be nearby with Bluetooth enabled.

Step 5: On your old phone, confirm the transfer when prompted.

Step 6: The eSIM will deactivate on the old device and activate on the new one.

Important: Not all carriers support eSIM transfer between devices. If the transfer option does not appear, contact your carrier to request a new QR code for your new phone. The eSIM will need to be deactivated on the old device first.

After Setup: Essential Settings

Once your eSIM is installed and active, configure these settings to ensure everything works properly — especially if you are using the eSIM for travel.

Enable Data Roaming (For Travel eSIMs)

Most travel eSIMs require data roaming to be enabled, because the eSIM connects to partner networks in your destination country.

1. Go to Settings > Connections > Mobile Networks.
2. Select your travel eSIM line.
3. Toggle Data Roaming to ON.

Will I get charged? No. When using a prepaid travel eSIM (like Airalo or Holafly), enabling data roaming simply allows the eSIM to connect to local partner networks. You will only use the data included in your eSIM plan — there are no surprise roaming charges because the plan is prepaid.

Set Preferred SIM for Data

Tell your phone which SIM card to use for internet access:

1. Go to Settings > Connections > SIM Manager.
2. Under Preferred SIMs, tap Mobile data.
3. Select your travel eSIM for data.

Label Your SIMs

Clear labels prevent confusion when your phone asks which SIM to use:

1. Go to Settings > Connections > SIM Manager.
2. Tap on a SIM card.
3. Tap the name field at the top.
4. Enter a clear label: “Home,” “Travel,” “Data Only,” or the destination name.

Dual SIM Management on Samsung

Samsung’s One UI provides robust dual SIM management tools. Here is how to get the most out of running two lines simultaneously.

Switch the Data Line

To change which SIM handles your mobile data:

1. Open Settings > Connections > SIM Manager.
2. Under Preferred SIMs, tap Mobile data.
3. Select the SIM you want to use for internet.

Quick method: Pull down the Quick Settings panel (swipe down twice from the top of the screen). If you see a SIM card toggle, tap it to switch data lines instantly.

Set Per-App SIM Preferences

On Samsung phones running One UI 5.1 or later, you can assign specific SIMs to specific apps:

1. Go to Settings > Connections > SIM Manager.
2. Scroll down to find App-based preferred SIM (or Per-app SIM preferences on some versions).
3. For each app, choose which SIM it should use for data.

Example: Assign your travel eSIM to Google Maps, WhatsApp, and your browser, while keeping your home SIM for banking apps that require your home number.

Smart Dual SIM Feature

Samsung’s Smart Dual SIM automatically routes data to your secondary SIM when your primary SIM is busy with a voice call. This prevents data dropouts during phone calls.

• Where to find it: Settings > Connections > SIM Manager > Smart Dual SIM.
• When to enable: When you want uninterrupted internet during calls.
• When to disable: When you want strict control over which SIM uses data (to avoid unexpected roaming charges).

Make Calls or Send Texts from a Specific SIM

When you make a call or send a text, Samsung will ask which SIM to use (unless you have set a default):

• In the Phone app: Before dialing, tap the SIM icon next to the call button to choose your line.
• In Messages: When composing a new message, tap the SIM selector at the top to choose the sending line.
• Set a default: In SIM Manager, set a preferred SIM for Calls and Texts to skip the selection prompt every time.

Samsung-Specific Tips

One UI 6 vs One UI 7: Settings Path Differences

Samsung updates its interface with each One UI version. Here is where to find eSIM settings on different versions:

One UI Version	Path to SIM Manager
One UI 7 (2025+)	Settings > Connections > SIM Manager
One UI 6 (2024)	Settings > Connections > SIM Manager
One UI 5 (2023)	Settings > Connections > SIM card manager
One UI 4 (2022)	Settings > Connections > SIM card manager
One UI 3 (2021)	Settings > Connections > SIM card manager

The functionality is the same — only the menu name changes between “SIM Manager” (newer) and “SIM card manager” (older).

Back Up eSIM Information with Samsung Account

While eSIM profiles themselves cannot be backed up to Samsung Cloud (they are tied to the secure chip), you can save your eSIM configuration details:

1. Note your eSIM provider’s name and plan details.
2. Save a copy of your QR code or activation code to Samsung Notes or a secure location.
3. Some providers (like Airalo) let you re-download the QR code from their app or website.

Check Your Samsung Model Number

To confirm your exact model variant (which determines eSIM support):

1. Go to Settings > About Phone.
2. Look for Model Number. It will be something like SM-S926B.
3. The letter at the end indicates the region:
   • B = International / Europe
   • U = US (unlocked)
   • U1 = US (carrier-specific)
   • N = Korea
   • 0 = China (typically no eSIM)

Troubleshooting Samsung eSIM Issues

Problem 1: “Add eSIM” Option Not Showing

Cause: Your Samsung model does not support eSIM, your phone is running old software, or the firmware for your region has eSIM disabled.

Fix:

1. Update your phone: Settings > Software Update > Download and Install.
2. Restart your phone after the update.
3. Check your model number (see tip above) — if it ends in “0” (China variant), eSIM is not available.
4. If you bought the phone from a carrier, contact them — some carriers disable eSIM in the firmware until you request it.

Problem 2: QR Code Will Not Scan

Cause: Screen glare, low QR code resolution, or the QR code has already been used.

Fix:

1. Increase screen brightness on the device displaying the QR code.
2. Move to a well-lit area without direct light on the screen.
3. Hold your phone 6-8 inches (15-20cm) from the QR code.
4. If the QR code is too small, zoom in on the display showing it.
5. Try Method 2 (manual activation code entry) as a fallback.
6. Contact your eSIM provider — the QR code may have been consumed already and you need a new one.

Problem 3: “Unable to Add eSIM” or Download Fails

Cause: Poor internet connection, carrier server issues, or phone is carrier-locked.

Fix:

1. Switch to a different Wi-Fi network, or try mobile data instead.
2. Restart your phone and try again.
3. Reset network settings: Settings > General Management > Reset > Reset Network Settings. (Warning: this will forget all saved Wi-Fi passwords.)
4. Wait 30 minutes and try again — the carrier server may be temporarily overloaded.
5. Confirm your phone is unlocked: try inserting a SIM from a different carrier. If it does not work, contact your carrier to unlock.

Problem 4: eSIM Installed but No Data Connection

Cause: Data roaming is off, APN settings are incorrect, or the wrong SIM is selected for data.

Fix:

1. Confirm the eSIM is set as the data line: Settings > Connections > SIM Manager > Preferred SIMs > Mobile data.
2. Enable data roaming: Settings > Connections > Mobile Networks > [eSIM line] > Data Roaming > ON.
3. Toggle Airplane Mode on, wait 10 seconds, toggle off.
4. Restart your phone.
5. Check APN settings: Settings > Connections > Mobile Networks > [eSIM line] > Access Point Names. Your eSIM provider may have specific APN settings — check their support page.

Problem 5: eSIM Disappeared After Software Update

Cause: A software update occasionally resets SIM preferences, though the eSIM profile is usually still stored on the device.

Fix:

1. Go to Settings > Connections > SIM Manager. Check if the eSIM still appears but is simply toggled off.
2. If the eSIM appears, toggle it ON.
3. If the eSIM is completely gone, try adding it again using your original QR code or activation code.
4. Contact your eSIM provider for a replacement if the profile cannot be recovered.

Frequently Asked Questions

1. How many eSIM profiles can I store on my Samsung phone?

Samsung Galaxy S25 and S24 series can store up to 20 eSIM profiles. Older models (S22, S21, Z Fold/Flip 4-5) can store approximately 5-10 profiles. However, only 1 or 2 eSIMs can be active at the same time (S25 supports 2 active eSIMs; S24 and older support 1 active eSIM alongside 1 physical SIM).

2. Does my Samsung phone need to be unlocked to use eSIM?

To use an eSIM from your own carrier, a locked phone will work. To use a third-party eSIM (such as a travel eSIM from Airalo or Holafly), your phone must be unlocked. If you bought your phone directly from Samsung unlocked, you are all set. If you bought it from a carrier, contact them to unlock it.

3. Can I use two eSIMs at the same time on Samsung?

On the Galaxy S25 series, yes — you can have two active eSIMs simultaneously, or one eSIM plus one physical SIM. On the S24 and older models, you can only have one active eSIM at a time, used alongside one physical SIM card.

4. Does Samsung support eSIM transfer when I upgrade phones?

Yes. Samsung Smart Switch can transfer eSIM profiles between Samsung Galaxy phones, though carrier support varies. If the built-in transfer does not work, contact your carrier for a new QR code for your new device. Always deactivate the eSIM on the old phone first.

5. Why does my US Galaxy S20 not have eSIM?

The US version of the Galaxy S20 (SM-G981U) does not include eSIM hardware. This was a decision by Samsung and US carriers at the time. The international variant (SM-G981B) does support eSIM. Starting with the S21 series, all US Samsung flagships include eSIM.

6. Can I use eSIM on a Samsung phone bought in China?

No. Samsung phones manufactured for and sold in mainland China, Hong Kong, and Taiwan do not support eSIM, regardless of model. This is a hardware restriction based on regional regulations. If you need eSIM on a Samsung phone, purchase an international, US, or European variant.

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三星Galaxy eSIM设置完全教程：S25/S24/Fold/Flip全系列

在三星Galaxy手机上设置eSIM，可以让你无需更换实体SIM卡就能添加第二个号码、使用旅行流量套餐，或者把工作和个人号码分开管理。本教程覆盖所有支持eSIM的三星机型，手把手教你三种激活方式，并详解双卡管理的所有技巧。

哪些三星手机支持eSIM？

三星从Galaxy S20系列（2020年）开始支持eSIM，但不同地区销售的版本差异很大。同一型号在不同国家可能有或没有eSIM功能。

选购/使用前必须了解：

• 美版（S21及以后）： 全部支持eSIM。但是，美版Galaxy S20不支持eSIM！
• 中国大陆/港版/台湾版： 绝大多数三星手机不支持eSIM，即使型号名称与国际版相同。
• 韩版： eSIM支持有限，仅部分旗舰机型（S23/S24/Z Fold 4+/Z Flip 4+）支持。
• 国际版： eSIM支持最广泛。

如何确认你的手机是否支持eSIM： 进入 设置 > 连接 > SIM卡管理器。如果看到”添加eSIM”选项，说明支持。如果SIM管理器中只有实体SIM卡选项，说明你的版本不支持eSIM。

三星eSIM支持一览表

机型	eSIM数量	实体SIM	可存储配置文件	双卡组合	地区限制
Galaxy S25 Ultra	2	1	20个	eSIM+eSIM 或 eSIM+实体	中国版无eSIM
Galaxy S25+ / S25	2	1	20个	eSIM+eSIM 或 eSIM+实体	S25系列新增双eSIM支持
Galaxy S25 Edge	2	1	20个	eSIM+eSIM 或 eSIM+实体	超薄设计，完整eSIM支持
Galaxy S24 Ultra	1	1	20个	eSIM+实体	仅1个eSIM可同时激活
Galaxy S24+ / S24	1	1	20个	eSIM+实体	S24 FE也支持eSIM
Galaxy S23系列	1	1	10+	eSIM+实体	S23 FE支持eSIM
Galaxy S22系列	1	1	10+	eSIM+实体
Galaxy S21系列	1	1	5+	eSIM+实体	S21 FE支持eSIM
Galaxy S20（仅国际版）	1	1	5+	eSIM+实体	美版S20不支持eSIM
Galaxy Z Fold 6/5/4	1	1	10+	eSIM+实体
Galaxy Z Flip 6/5/4/3	1	1	5-10	eSIM+实体
Galaxy A56 / A55	1	1	5+	eSIM+实体	大部分地区可用
Galaxy A54	1	1	5+	eSIM+实体	仅欧洲、北美、韩国、日本

不支持eSIM的机型： 美版Galaxy S20、所有Galaxy Note系列、Galaxy A34及更老的A系列、Galaxy S10及更早机型。中国大陆销售的所有三星手机均不支持eSIM。

开始之前：设置前检查清单

在添加eSIM之前，请逐项确认以下内容，避免激活失败：

• 稳定的Wi-Fi连接。 下载eSIM配置文件需要联网。用已有SIM卡的移动数据也可以，但Wi-Fi更稳定。
• 手机已解锁。 如果你的手机是从运营商购买的（如中国联通合约机），可能被锁定在该运营商网络。使用第三方eSIM（如旅行eSIM）需要解锁的手机。直接从三星官网购买的无锁版则没有此问题。
• 二维码或激活码已准备好。 eSIM供应商应该已经给你提供了二维码图片、激活链接或SM-DP+地址+激活码。请确保在另一台设备上能看到，或已打印出来。
• 系统已更新到最新版本。 进入 设置 > 软件更新 > 下载并安装。最新的One UI版本能确保最顺畅的eSIM体验。
• EID号码（备用）。 部分供应商在购买时会要求你的EID号码。查找路径：设置 > 关于手机 > 状态信息 > EID。

方法一：扫描二维码（最常用）

这是绝大多数eSIM供应商（Airalo、Holafly、Saily、Nomad等）以及运营商eSIM最常用的激活方式。

你需要准备： eSIM供应商提供的二维码，显示在另一个屏幕上或打印出来。

第1步： 打开手机上的 设置 应用。

第2步： 点击 连接。

第3步： 点击 SIM卡管理器（旧版One UI中可能显示为”SIM卡管理”）。

第4步： 点击 添加eSIM。

第5步： 选择 扫描二维码，手机摄像头会自动启动。

第6步： 将摄像头对准二维码。保持手机距离二维码约15-20厘米，稳定不动。手机会自动识别并读取二维码。

第7步： 当屏幕显示”添加移动套餐”并展示运营商详情时，点击 确认（或”添加”）。

第8步： 等待eSIM配置文件下载并安装。根据网速和运营商服务器状况，通常需要1-5分钟。

第9步： 系统提示时，为新eSIM设置自定义标签。点击默认名称，改为描述性的名字，如”旅行流量”、“日本eSIM”、“工作号”。

第10步： 选择SIM卡偏好设置 —— 哪张SIM用于通话、短信和数据。（详见下方双卡管理章节。）

实用技巧： 如果二维码就在你自己手机上（比如邮件里），先截图保存。然后在图库中打开截图放大二维码，用另一台设备来扫描。或者直接选”输入激活码”（方法二），手动输入信息。

方法二：手动输入激活码

当你无法扫描二维码时使用此方法 —— 比如eSIM信息是以文字形式发送的、二维码无法正常扫描、或者你在远程设置。

你需要准备： SM-DP+服务器地址和激活码。通常以这样的格式提供：LPA:1$smdp.example.com$激活码

第1步： 打开 设置 > 连接 > SIM卡管理器。

第2步： 点击 添加eSIM。

第3步： 在二维码扫描界面底部，点击 输入激活码。

第4步： 在 服务器地址（SM-DP+） 字段中，输入SM-DP+地址。这是LPA字符串中第一个$和第二个$之间的部分。例如：smdp.example.com

第5步： 在 激活码 字段中，输入激活码。这是第二个$后面的所有内容。

第6步： 如果供应商给了 确认码，填入对应字段。没有则留空。

第7步： 点击 连接 或 添加。

第8步： 等待下载和安装完成，然后为新eSIM设置标签。

常见错误： 不要把LPA:1$前缀也输入到服务器地址中，只输入它后面的域名部分。

方法三：三星账号转移（三星换三星）

从一台三星手机换到另一台时，可以使用三星Smart Switch转移eSIM。

第1步： 在新三星手机上，打开 设置 > 连接 > SIM卡管理器。

第2步： 点击 添加eSIM。

第3步： 查找 从其他设备转移SIM 或 从其他设备导入SIM 选项。

第4步： 按屏幕提示操作。两部手机都需要在附近且开启蓝牙。

第5步： 在旧手机上确认转移请求。

第6步： eSIM会在旧设备上停用，在新设备上激活。

重要提示： 并非所有运营商都支持设备间eSIM转移。如果看不到转移选项，请联系运营商申请新的二维码。旧设备上的eSIM需要先停用。

安装后：关键设置

eSIM安装激活后，请配置以下设置确保一切正常运行 —— 尤其是用于旅行的eSIM。

开启数据漫游（旅行eSIM必须）

大多数旅行eSIM要求开启数据漫游，因为eSIM是通过目的地国家的合作网络连接的。

1. 进入 设置 > 连接 > 移动网络。
2. 选择你的 旅行eSIM 线路。
3. 将 数据漫游 切换为 开启。

会额外收费吗？ 不会。使用预付费旅行eSIM（如Airalo或Holafly）时，开启数据漫游只是允许eSIM连接到当地合作网络。你只会使用eSIM套餐内包含的流量 —— 因为套餐是预付费的，不会有意外漫游费用。

设置首选数据SIM

告诉手机用哪张SIM卡上网：

1. 进入 设置 > 连接 > SIM卡管理器。
2. 在”首选SIM”下，点击 移动数据。
3. 选择旅行eSIM作为数据线路。

为SIM卡设置标签

清晰的标签能避免手机每次问你使用哪张卡时的困惑：

1. 进入 设置 > 连接 > SIM卡管理器。
2. 点击一张SIM卡。
3. 点击顶部的名称字段。
4. 输入清晰的标签：“主号”、“旅行”、“流量卡”、或目的地名称。

三星双卡管理详解

三星的One UI提供了强大的双卡管理工具。以下是同时使用两条线路时的全部技巧。

切换数据线路

1. 打开 设置 > 连接 > SIM卡管理器。
2. 在”首选SIM”下，点击 移动数据。
3. 选择你要用于上网的SIM卡。

快捷方式： 从屏幕顶部下拉两次打开快捷设置面板。如果看到SIM卡切换图标，直接点击即可快速切换数据线路。

为每个APP指定使用哪张SIM卡

在One UI 5.1及以后版本中，可以为每个APP单独指定使用哪张SIM卡：

1. 进入 设置 > 连接 > SIM卡管理器。
2. 向下滚动，找到 基于应用的首选SIM。
3. 为每个APP选择要使用的SIM卡。

举例： 把旅行eSIM分配给Google地图、WhatsApp和浏览器，而银行APP继续使用主号SIM。

智能双卡功能

三星的 智能双卡 功能会在主SIM卡忙于通话时，自动切换到副SIM卡传输数据，避免通话期间断网。

• 位置： 设置 > 连接 > SIM卡管理器 > 智能双卡
• 建议开启： 希望通话时不断网。
• 建议关闭： 需要严格控制数据使用（避免意外漫游费）。

用指定SIM卡打电话或发短信

• 拨号时： 拨号键旁边会显示SIM卡图标，点击可选择使用哪条线路。
• 发短信时： 编辑新短信时，顶部可选择发送线路。
• 设置默认： 在SIM卡管理器中，设置通话和短信的默认SIM卡，这样就不用每次都选择。

三星特有技巧

One UI 6与One UI 7的设置路径差异

One UI版本	SIM管理器路径
One UI 7（2025+）	设置 > 连接 > SIM管理器
One UI 6（2024）	设置 > 连接 > SIM管理器
One UI 5（2023）	设置 > 连接 > SIM卡管理
One UI 4（2022）	设置 > 连接 > SIM卡管理

功能完全相同，只是菜单名称在新旧版本间略有不同。

确认你的三星手机型号

查看具体型号（决定是否支持eSIM）：

1. 进入 设置 > 关于手机。
2. 找到 型号，格式如：SM-S926B。
3. 末尾字母代表地区：
   • B = 国际版/欧洲
   • U = 美国（无锁版）
   • U1 = 美国（运营商版）
   • N = 韩国
   • 0 = 中国（通常无eSIM）

常见问题排查

问题1：找不到”添加eSIM”选项

原因： 手机型号不支持eSIM、系统版本过旧、或所在地区的固件禁用了eSIM。

解决方案：

1. 更新系统：设置 > 软件更新 > 下载并安装。
2. 更新后重启手机。
3. 检查型号末尾字母 —— 如果是”0”（中国版），则不支持eSIM。
4. 如果手机来自运营商，联系运营商确认是否需要解锁eSIM功能。

问题2：二维码无法扫描

解决方案：

1. 增加显示二维码的屏幕亮度。
2. 保持手机距二维码15-20厘米，稳定不动。
3. 如果二维码太小，在显示设备上放大。
4. 尝试方法二（手动输入激活码）。
5. 联系供应商 —— 二维码可能已被使用过，需要重新获取。

问题3：eSIM已安装但无法上网

解决方案：

1. 确认eSIM已设为数据线路：设置 > 连接 > SIM管理器 > 首选SIM > 移动数据。
2. 开启数据漫游：设置 > 连接 > 移动网络 > [eSIM线路] > 数据漫游 > 开启。
3. 开关一次飞行模式。
4. 重启手机。
5. 检查APN设置，参考eSIM供应商提供的APN配置信息。

问题4：系统更新后eSIM消失

解决方案：

1. 进入 设置 > 连接 > SIM管理器，检查eSIM是否只是被关闭了。
2. 如果还在，重新开启即可。
3. 如果完全消失，用原来的二维码或激活码重新添加。
4. 联系eSIM供应商获取替代方案。

常见问题解答

1. 三星手机最多能存多少个eSIM配置？

Galaxy S25和S24系列最多可存储20个eSIM配置文件。旧机型（S22、S21、Z Fold/Flip 4-5）约可存储5-10个。但同一时刻只能有1-2个eSIM处于激活状态（S25支持2个活跃eSIM；S24及更早机型仅支持1个活跃eSIM搭配1张实体SIM）。

2. 手机必须解锁才能用eSIM吗？

使用自己运营商的eSIM，锁定手机也可以。使用第三方eSIM（如旅行eSIM），手机必须解锁。从三星官网购买的无锁版不需要担心此问题。运营商购买的手机需要联系运营商解锁。

3. 三星能同时用两个eSIM吗？

Galaxy S25系列可以 —— 支持两个eSIM同时激活使用，或一个eSIM加一张实体SIM。S24及更早机型同一时刻只能激活一个eSIM，搭配一张实体SIM使用。

4. 换新三星手机能转移eSIM吗？

可以。Samsung Smart Switch支持三星设备间转移eSIM配置文件，但需运营商支持。如果内置转移不可用，联系运营商获取新的二维码。在新手机添加前，需先停用旧手机上的eSIM。

5. 为什么我的美版Galaxy S20没有eSIM？

美版Galaxy S20（SM-G981U）未配备eSIM硬件。这是当时三星和美国运营商的决定。国际版（SM-G981B）是支持eSIM的。从S21系列开始，所有美版三星旗舰都支持eSIM。

6. 中国买的三星手机能用eSIM吗？

不能。在中国大陆、香港和台湾销售的三星手机不支持eSIM，无论什么型号。这是基于地区法规的硬件限制。如果需要eSIM功能，请购买国际版、美版或欧版三星手机。