You are packing for an international trip and you need reliable internet abroad. Should you grab a travel eSIM, rent a pocket WiFi device, buy a local SIM card at the airport, or just turn on international roaming? Each option has clear strengths and real drawbacks. This guide breaks down every factor so you can make the right choice for your trip.

TL;DR: Quick Recommendation

Your Situation	Best Option	Why
Solo traveler, short trip (3-7 days)	eSIM	Cheapest, fastest to set up, no extra device
Couple or family (3-5 people)	Pocket WiFi or eSIM + hotspot	Share one connection across multiple devices
Long-term stay (1+ month)	Local SIM	Best value for extended use, local phone number
Quick business trip (1-3 days)	eSIM or Roaming	Convenience matters more than cost
Budget-conscious backpacker	Local SIM	Cheapest per-GB option in most countries
Need a local phone number	Local SIM	Only option that gives you a real local number

The Big Comparison Table

Factor	eSIM	Pocket WiFi / WiFi Egg	Local SIM Card	International Roaming
Price range	$3-20/week	$5-15/day rental	$5-20 one-time	$6-85/day (varies wildly)
Setup time	2-5 minutes	Pick up at airport or delivered	15-60 minutes	Instant (auto-activates)
Setup location	Anywhere (before or during trip)	Airport counter / hotel delivery	Airport kiosk / local shop	No setup needed
Convenience	Scan QR code, done	Must carry extra device	Must find a shop, show passport	Zero effort
Speed	4G/5G (direct local network)	4G via device (some signal loss)	4G/5G (direct, fastest)	4G/5G (varies by agreement)
Typical speed	20-100 Mbps	10-50 Mbps	20-150 Mbps	5-50 Mbps (often throttled)
Multi-device sharing	Yes (phone hotspot)	Yes (5-10 devices natively)	Yes (phone hotspot)	Varies, often extra cost
Battery impact	None (uses phone’s radio)	Separate battery, 4-8 hr life	None (uses phone’s radio)	None
Extra device needed	No	Yes (must carry & charge)	No	No
Keep your number	Yes (dual SIM)	Yes	Need dual SIM phone	Yes
Coverage quality	Good (partner networks)	Good (depends on device network)	Best (local network, all towers)	Good (roaming agreements)
Data caps	1-20GB typical, unlimited available	Usually unlimited (fair use 500MB-1GB/day)	5-50GB typical	Often throttled after 200MB-2GB
Phone calls	Data only (most plans)	Data only	Voice + data	Voice + data
Works without phone	No (phone required)	Yes (laptop, tablet, camera)	No (phone required)	No (phone required)
Language barrier	None	None	Possible at local shop	None
Refund if unused	Some providers	Usually yes (before activation)	No	N/A
Best for	Solo travelers, short trips	Groups, families	Long stays, locals	Emergency, ultra-short trips

Detailed Analysis: eSIM

How It Works

An eSIM is a digital SIM card embedded in your phone. You purchase a data plan online, scan a QR code (or tap an activation link), and your phone connects to a local network in your destination country. No physical card, no extra device, no airport pickup.

Advantages

• Instant activation. Buy before your flight, activate when you land. Some plans activate automatically when you arrive in the destination country.
• No extra hardware. Nothing to carry, charge, or return.
• Keep your home number. Your eSIM runs alongside your existing SIM (physical or eSIM), so you can still receive calls and texts on your main number.
• Multi-country plans. Regional eSIMs cover entire continents (Europe, Asia, etc.) without needing separate plans for each country.
• Competitive pricing. A 7-day, 5GB plan for Japan costs $4-8 from providers like Airalo. Compare that to $10-15/day for WiFi rentals.
• Environmentally friendly. No plastic SIM cards, no packaging, no shipping.

Disadvantages

• Phone compatibility required. Your phone must support eSIM. Most phones from 2020 onward do, but check the eSIM compatible devices list first.
• Data-only (usually). Most travel eSIMs provide data only — no local phone number for voice calls. You will rely on WhatsApp, FaceTime, or Skype for calls.
• Sharing is limited. You can share via personal hotspot, but it drains your phone battery faster.
• Plan management. If you visit multiple countries on one trip, you may need to switch plans or buy a regional plan at a higher cost.

Cost Example

Destination	Provider	Data	Duration	Price
Japan	Airalo	5GB	7 days	$4.50
Europe (39 countries)	Holafly	Unlimited	7 days	$27
Thailand	Saily	5GB	10 days	$4
USA	Airalo	10GB	30 days	$16
Global (100+ countries)	Airalo	5GB	30 days	$15

Detailed Analysis: Pocket WiFi / WiFi Egg

How It Works

A pocket WiFi (known as “WiFi蛋” in Chinese) is a small, battery-powered device that connects to local cellular networks and creates a WiFi hotspot. You typically rent one at the airport before departure, use it throughout your trip, and return it when you get back.

Advantages

• Multiple devices. Connect 5-10 devices simultaneously — phones, tablets, laptops, cameras. Perfect for families and groups.
• No phone compatibility issues. Works with any WiFi-enabled device, regardless of age or brand.
• Often unlimited data. Many rental plans offer unlimited data (with fair-use soft caps around 500MB-1GB per day at full speed).
• Dedicated connection. Your phone battery is not affected since the WiFi device handles all cellular work.

Disadvantages

• Must carry and charge. The device weighs 100-200g and its battery lasts only 4-8 hours. You need to charge it daily, which means carrying yet another cable.
• Rental logistics. Pick up at the airport, return at the airport. Miss the return? Late fees. Lose it? Replacement fees ($50-200).
• Speed loss. Data travels: cell tower → WiFi device → your phone. This extra hop typically reduces speed by 20-40% compared to a direct cellular connection.
• Range limitation. The WiFi device must stay within 10-15 meters of your phone. Leave it in your hotel room and you lose connection.
• Per-day pricing adds up. At $8-15/day, a 10-day trip costs $80-150. An eSIM for the same trip might cost $10-30.
• Security concern. Open WiFi hotspots (even password-protected ones) can be intercepted. Use a VPN for sensitive activities.

Cost Example

Provider	Coverage	Daily Rate	Deposit	Return
Japan Wireless	Japan	$7/day	$0	Airport mailbox
GlocalMe	Global	$8-12/day	$50-100	Ship back
WiFi Dongles (China)	Various	$5-10/day	¥500 deposit	Airport counter
Uroaming	Asia	$6-9/day	Varies	Airport counter

Detailed Analysis: Local SIM Card

How It Works

You buy a prepaid SIM card from a local carrier at your destination — typically at the airport, a convenience store, or a mobile shop. You pop out your existing SIM, insert the local one, and get a local phone number with data.

Advantages

• Best speeds. Direct connection to a local carrier’s full network — no intermediary, no throttling. You are treated as a local customer.
• Cheapest per-GB. Local SIM cards are priced for local markets. In Thailand, 30GB for 7 days costs about $5. In Japan, 20GB for 30 days costs around $15 at the airport.
• Local phone number. Essential if you need to register for local apps (ride-hailing, food delivery, banking) that require SMS verification.
• Voice calls included. Most local SIMs include local calling minutes, useful for booking restaurants, calling hotels, or reaching local contacts.
• No compatibility concerns. Any unlocked phone with a SIM slot works.

Disadvantages

• Physical hassle. You must find a shop, potentially wait in line, show your passport, and swap SIM cards. In some countries (Japan, South Korea), the process involves registration paperwork.
• Language barrier. Not every airport kiosk has English-speaking staff. Rural areas in non-English-speaking countries can be challenging.
• Lose your main number temporarily. Unless your phone supports dual SIM or eSIM, inserting a local SIM means your home number goes offline. You will miss calls and texts.
• SIM card size. Older phones may need a specific SIM size. Most modern SIMs come as multi-size (nano/micro/standard), but it is worth checking.
• Leftover balance. If you buy more data than you need, the remainder is wasted — most prepaid SIMs cannot be refunded.
• Airport markup. SIM cards at airports are typically 2-3x more expensive than at a local shop in the city.

Cost Example

Country	Carrier	Data	Duration	Airport Price	City Price
Japan	IIJmio / bmobile	20GB	30 days	~$20	~$15
Thailand	AIS / TrueMove	30GB	7 days	~$8	~$5
UK	Three / Vodafone	20GB	30 days	~$15	~$10
USA	T-Mobile / Mint	10GB	30 days	~$25	~$20

Detailed Analysis: International Roaming

How It Works

International roaming uses your home carrier’s agreements with foreign networks. When you land in another country, your phone automatically connects to a partner network. No setup, no new SIM, no extra device.

Advantages

• Zero effort. Your phone just works when you land. No apps, no QR codes, no airport counters.
• Keep your number. Calls, texts, and data all work on your existing number.
• Reliable. Carrier-to-carrier agreements ensure stable connections in most countries.

Disadvantages

• Expensive. International roaming is typically the most expensive option — sometimes by a dramatic margin.
• Speed throttling. Many roaming plans cap speeds at 128Kbps-2Mbps after hitting a low data threshold (often 200MB-500MB/day).
• Bill shock risk. Without a daily cap, data charges can spiral. There have been real cases of travelers receiving bills of $1,000+ for a week of casual browsing.
• Inconsistent pricing. Rates vary wildly between carriers, destinations, and plan types.

Roaming Cost Comparison by Region

Carrier	Destination	Daily Rate	Data Included	Overage
AT&T (US)	Europe	$10/day	Unlimited (throttled)	N/A
Vodafone (UK)	EU	£0 (included)	Same as home plan	N/A
T-Mobile (US)	Global	$0 (included)	5GB high-speed	Slowed after cap
Optus (AU)	Asia	$10/day	2GB	$10/GB

US and EU travelers note: T-Mobile includes international data in many plans, and EU roaming is free within the EU under “Roam Like at Home” regulations. Check your carrier before assuming roaming is always expensive.

Best Choice by Scenario

Solo Traveler (3-7 Day Trip)

Winner: eSIM

You are one person with one phone. An eSIM gives you instant connectivity at the lowest cost, with zero logistics. Buy it before your flight, activate on landing, and forget about it.

• Cost: $4-20 for the entire trip
• Setup: 2 minutes
• Hassle: None

Couple or Family Travel (3-5 People)

Winner: Pocket WiFi or eSIM + Hotspot

If your group has 3-5 people and everyone needs internet, a pocket WiFi device lets everyone connect without each person buying their own plan. However, if battery life and carrying an extra device bothers you, one person can buy an eSIM with a generous data plan and share via personal hotspot.

Option	Cost (7 days, Japan)	Pros	Cons
1 Pocket WiFi	$50-70	Easy sharing, dedicated device	Must charge daily, carry extra device
1 eSIM + hotspot	$15-30	No extra device	Drains phone battery, range limited
4 individual eSIMs	$16-40 total	Independence, no battery drain	Slightly more total cost

Long-Term Stay (1+ Month)

Winner: Local SIM Card

For stays beyond 2-3 weeks, a local SIM card gives you the best value, a local phone number (essential for deliveries, apps, and services), and the fastest speeds.

• Cost: $10-30/month for generous data
• Bonus: Local phone number for app registration
• Consideration: Visit a carrier store in the city (not the airport) for the best deals

Short Business Trip (1-3 Days)

Winner: eSIM or International Roaming

Time is money on a business trip. An eSIM is activated in 2 minutes. International roaming requires zero effort. Either works well for 1-3 days when cost sensitivity is low.

Budget Backpacker

Winner: Local SIM Card

When every dollar counts, local SIM cards offer the most data per dollar. In Southeast Asia, $5 gets you 30GB. The trade-off is the time spent buying one at each destination.

Can You Combine Them? (Hybrid Strategies)

The smartest travelers do not pick just one — they combine solutions.

Strategy 1: eSIM + Local SIM (Dual SIM Phone)

• Main SIM slot: Your home SIM (keeps your number active)
• eSIM slot: Travel data plan
• Result: You receive calls on your home number AND browse with fast local data

This is the most popular setup among frequent travelers with modern smartphones.

Strategy 2: eSIM + Pocket WiFi (Group Travel)

• Your phone: eSIM for personal use and navigation
• Pocket WiFi: For the group (kids’ tablets, partner’s phone, laptop)
• Result: You stay connected independently, while the group shares the WiFi device

Strategy 3: eSIM First, Local SIM Later

• Day 1-2: Use eSIM for immediate connectivity
• Day 3+: Buy a local SIM for a phone number and cheaper long-term data
• Result: Never without internet, but optimize cost for longer stays

Frequently Asked Questions

1. Is eSIM faster than pocket WiFi?

Generally, yes. An eSIM connects your phone directly to the local cellular network, while a pocket WiFi device adds an extra wireless hop (cell tower to device to your phone). This extra step typically costs 20-40% of your speed. In real-world tests, eSIM users typically see 30-80Mbps while pocket WiFi users see 15-40Mbps on the same network.

2. Can I use eSIM if my phone does not support it?

No. eSIM requires compatible hardware. If your phone does not have an eSIM chip, your options are pocket WiFi, local SIM card, or international roaming. Check our eSIM compatible phones list to verify your device.

3. Is pocket WiFi worth it for solo travelers?

Usually not. For a single person, an eSIM is cheaper, faster, and requires no extra device. Pocket WiFi shines when 3+ people need to share one connection. The only exception is if you need to connect non-phone devices (laptop, tablet, camera) and do not want to use your phone as a hotspot.

4. Can I get a local phone number with eSIM?

Most travel eSIMs are data-only and do not include a local phone number. However, some providers (like Holafly for certain destinations) offer plans with voice capability. If you need a local number, a physical local SIM card is the most reliable option.

5. What if I am traveling to multiple countries?

eSIM is the clear winner for multi-country trips. Regional eSIM plans cover entire areas — Europe (39 countries), Asia (15+ countries), or even global (100+ countries) — with a single plan. With local SIM cards, you would need to buy a new one in each country. Pocket WiFi devices may or may not work across borders depending on the rental agreement.

6. How do I stay connected during a layover?

If you have a short layover (1-4 hours), airport WiFi is usually sufficient. For longer layovers or if you need reliable connectivity, an eSIM plan that covers the layover country is the easiest solution — activate it during the layover, deactivate when you board.

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eSIM vs WiFi蛋 vs 实体流量卡：出国上网终极对比

出国旅行最头疼的问题之一就是上网。发朋友圈、导航、翻译、查攻略，哪样都离不开网络。2026年，主流的出国上网方案有四种：eSIM、随身WiFi（WiFi蛋）、当地实体流量卡、国际漫游。到底选哪个？本文用真实数据帮你做出最佳决策。

先说结论：按你的情况选

你的情况	推荐方案	原因
一个人出行，3-7天	eSIM	最便宜、最方便，扫码即用
情侣/家庭出行（3-5人）	WiFi蛋 或 eSIM开热点	多人共享，一台搞定
长期旅居（1个月+）	当地SIM卡	性价比最高，有本地号码
短期出差（1-3天）	eSIM 或 国际漫游	便利优先
预算极低	当地SIM卡	每GB成本最低
国行iPhone用户	WiFi蛋 或 当地SIM卡	国行不支持eSIM（详见iPhone eSIM教程）

十维终极对比表

对比维度	eSIM	WiFi蛋/随身WiFi	当地SIM卡	国际漫游
价格	¥20-150/周	¥30-100/天	¥30-150一次性	¥19.9-85/天
设置时间	2-5分钟	机场取机15分钟	15-60分钟	无需设置
便利性	⭐⭐⭐⭐⭐ 扫码即用	⭐⭐⭐ 需取还	⭐⭐ 需找店铺	⭐⭐⭐⭐⭐ 自动开通
网速	20-100Mbps直连	10-50Mbps中转	20-150Mbps最快	5-50Mbps常限速
多设备共享	开热点（费电）	天然支持5-10台	开热点（费电）	需额外付费
电池影响	无影响	需单独充电，续航4-8小时	无影响	无影响
是否需额外设备	不需要	需要（约100-200g）	不需要	不需要
保留原号码	双卡并行	不影响	需双卡手机	不影响
信号覆盖	取决于合作运营商	取决于设备网络	最佳（本地全网）	取决于漫游协议
语言门槛	无	无	可能需要当地语言	无
适合人群	独行侠、短途	家庭、多人	长住、需本地号	怕麻烦、超短途

方案一：eSIM详解

什么是eSIM？

eSIM是嵌入手机内部的虚拟SIM卡。你在网上购买套餐后，扫个二维码就能激活，无需插卡、无需额外设备。落地即用，离开即停。

优势

• 即买即用：出发前就能买好，落地自动激活。不用在机场排队。
• 无额外设备：不用背WiFi蛋，不用充额外的电。
• 保留原号码：eSIM和你的实体SIM卡并行工作，不影响来电和短信。
• 跨国方便：一张区域eSIM覆盖整个欧洲39国或亚洲多国。
• 价格友好：日本7天5GB低至¥30，远低于WiFi蛋的每日租金。

劣势

• 手机必须支持：需要2020年后的中高端手机。国行iPhone不支持（详见iPhone eSIM教程）。
• 大多只有流量：没有本地号码，无法接打本地电话。
• 共享不便：开热点会消耗手机电量，且速度打折。

真实价格参考

目的地	供应商	流量	有效期	价格
日本	Airalo	5GB	7天	¥32
泰国	Saily	5GB	10天	¥28
欧洲39国	Holafly	无限	7天	¥195
美国	Airalo	10GB	30天	¥115
全球100+国	Airalo	5GB	30天	¥108

方案二：WiFi蛋/随身WiFi详解

什么是WiFi蛋？

WiFi蛋（也叫随身WiFi、移动热点）是一个巴掌大的设备，插入当地SIM卡后创建WiFi热点，供多台设备同时上网。通常在出发机场租，回程机场还。

优势

• 多人共享：一台设备支持5-10台设备同时连接，特别适合家庭和情侣。
• 不挑手机：任何能连WiFi的设备都行——老手机、平板、笔记本、相机。
• 通常不限流量：很多租赁套餐标榜”不限量”（实际有公平使用限制，高速流量500MB-1GB/天）。
• 不消耗手机电池：上网的活儿都是WiFi蛋干，手机电池爽歪歪。

劣势

• 必须额外携带：多一个设备（100-200g），多一根充电线，多一个需要充电的东西。
• 续航焦虑：电池只能撑4-8小时。逛一天下来可能没电。
• 取还麻烦：机场取、机场还。忘了还？逾期费。弄丢了？赔偿费¥300-1500。
• 网速打折：数据经过 基站→WiFi蛋→手机 的二次中转，实测速度比直连低20-40%。
• 覆盖范围有限：WiFi蛋放包里，走远了就断。通常10-15米有效距离。
• 费用累加：¥50-100/天，7天旅行就是¥350-700。而eSIM可能只要¥30-200。

真实价格参考

供应商	覆盖范围	日租金	押金	归还方式
环球漫游	日韩东南亚欧美	¥25-50/天	¥500	机场柜台
漫游超人	全球	¥30-60/天	¥500	机场柜台/快递
GlocalMe	全球	¥40-80/天	¥500-800	快递寄回

方案三：当地实体SIM卡详解

怎么用？

到了目的地，在机场或便利店买一张当地预付费SIM卡，换掉手机里的卡，获得本地号码和流量。

优势

• 速度最快：直连当地运营商的全部基站，无中转、无限速，和本地人用一样的网络。
• 性价比最高：泰国30GB 7天只要¥30，日本20GB 30天约¥100。
• 有本地号码：打车、外卖、订酒店都需要本地号码验证。
• 含通话功能：大多数当地SIM包含本地通话分钟数。

劣势

• 需要找店铺：机场有专柜，但城市里可能需要问路才能找到。
• 语言障碍：非英语国家的小店，沟通可能困难。
• 原号码断线：不是双卡手机的话，换了当地卡就收不到原来的电话和短信。
• 机场溢价：机场买通常比市区贵2-3倍。
• 剩余浪费：没用完的流量无法退款。

真实价格参考

国家	运营商	流量	有效期	机场价	市区价
日本	IIJmio	20GB	30天	¥140	¥100
泰国	AIS/True	30GB	7天	¥55	¥30
韩国	KT/SKT	10GB	5天	¥60	¥40
新加坡	Singtel	20GB	7天	¥50	¥35

方案四：国际漫游详解（重点：中国三大运营商）

什么是国际漫游？

不用换卡、不用买设备，手机飞到国外自动连上当地合作网络。方便是方便，但价格可能让你心跳加速。

中国三大运营商国际漫游费对比

这是最多国内用户关心的数据。以下是2026年最新的三大运营商漫游资费：

运营商	漫游方案	覆盖范围	日费	高速流量	超额处理	开通方式
中国移动	境外不限量日套餐	100+国家和地区	¥19.9-29.9/天	200MB-500MB高速	降速至128Kbps	APP一键开通
中国联通	境外流量包	80+国家和地区	¥20-30/天	300MB-500MB高速	降速至128Kbps	APP或短信开通
中国电信	按量计费 / 日封顶	70+国家和地区	¥1-3/MB 或 ¥25-85/天封顶	取决于套餐	按量计费无上限	需提前开通

中国移动

• ¥19.9/天（港澳台、东南亚等热门地区）
• ¥29.9/天（欧美、日韩等地区）
• 每日高速流量约200MB-500MB，用完降速至128Kbps（基本只能刷文字）
• 不使用不扣费（到了当地连上网络才开始计费）
• 建议：出国前在”中国移动”APP提前开通

中国联通

• ¥20/天（亚太地区）
• ¥30/天（欧美地区）
• 高速流量300MB-500MB/天，超出后降速
• 支持”一带一路”多国通用流量包
• 建议：通过联通APP或发短信”KTGJLY”到10010开通

中国电信

• 按量计费：¥1-3/MB（不开套餐的情况下）
• 日封顶套餐：¥25-85/天（因地区而异）
• 最高风险：如果不开套餐直接漫游，费用极易失控

真实案例警示： 曾有用户出境8天，因未开通漫游套餐且手机后台自动更新APP，产生了超过一万元的流量费。运营商虽然协商减免了部分，但仍需支付数千元。出国前务必确认漫游套餐已开通，并关闭手机的自动更新功能。

运营商漫游真的划算吗？

简单算笔账：

方案	日本7天费用	总流量	每GB成本
中国移动漫游	¥139-209	~1.4-3.5GB高速	¥60-150/GB
eSIM (Airalo 5GB)	¥32	5GB	¥6.4/GB
WiFi蛋	¥175-350	”不限量”(每天500MB-1GB高速)	¥50-100/GB
当地SIM卡	¥100-140	20GB	¥5-7/GB

结论： 国际漫游的每GB成本是eSIM和当地SIM卡的10-20倍。它唯一的优势就是”零操作”——落地即用。适合不差钱或只待1-2天的用户。

按场景选择最佳方案

独自旅行

首选：eSIM

一个人出行，最简单最经济。出发前买好，落地激活，全程无忧。费用通常只有WiFi蛋的1/5。

家庭/情侣出行（3-5人）

首选：WiFi蛋 或 eSIM+热点

3-5人共享WiFi蛋最省事。但如果你受不了WiFi蛋的续航焦虑，也可以买一张大流量eSIM然后开热点给同行者。

方案	日本7天费用	优点	缺点
1个WiFi蛋	¥250-500	一台搞定	要充电、要带着
1个eSIM开热点	¥100-200	无额外设备	手机耗电快
每人1个eSIM	¥120-320	各自独立	总费用稍高

长期旅居（1个月以上）

首选：当地SIM卡

超过2-3周的停留，当地SIM卡的性价比碾压一切。有本地号码，可以注册当地应用，网速最快。

短途出差（1-3天）

首选：eSIM 或 国际漫游

1-3天的差旅，便利比费用重要。eSIM 2分钟搞定，漫游完全零操作。

预算极有限

首选：当地SIM卡

东南亚地区，¥30就能买到30GB的7天流量卡。没有比这更便宜的了。

混合方案：聪明人的做法

最聪明的旅行者不会只选一种方案——他们会组合使用。

方案A：eSIM + 实体SIM（双卡手机）

• 实体卡槽：保留国内SIM卡（接电话、收验证码）
• eSIM槽：装旅行流量套餐
• 效果：电话不断，上网飞快

这是2026年频繁出行者的标配方案。

方案B：eSIM先顶着 + 之后买当地卡

• 第1-2天：用eSIM保证落地就有网
• 第3天起：找到划算的当地SIM卡再切换
• 效果：绝不断网，同时优化长期成本

方案C：eSIM自用 + WiFi蛋给家人

• 你的手机：eSIM独立上网
• WiFi蛋：给老人/孩子的平板和手机用
• 效果：你不受WiFi蛋续航限制，家人也能上网

常见问题

1. eSIM比WiFi蛋快吗？

通常快。eSIM直连当地4G/5G基站，WiFi蛋需要经过”基站→设备→手机”的二次中转，实测速度低20-40%。eSIM一般30-80Mbps，WiFi蛋15-40Mbps。

2. 手机不支持eSIM怎么办？

可以选WiFi蛋、当地SIM卡或国际漫游。也可以考虑5ber工具卡（将eSIM配置写入实体卡）。查看我们的eSIM兼容设备列表确认你的手机是否支持。

3. WiFi蛋适合一个人用吗？

通常不推荐。一个人用WiFi蛋的费用是eSIM的5-10倍，还要多背一个设备。WiFi蛋的核心优势是多人共享，独行侠用eSIM更划算。

4. 去多个国家用哪种方案？

eSIM完胜。区域eSIM一张卡覆盖欧洲39国或亚洲多国，跨境无缝切换。用当地SIM卡的话，每到一个国家就要重新买卡。WiFi蛋跨国可能需要换设备或加钱升级。

5. 运营商漫游真的会产生天价账单吗？

会。如果没有开通漫游套餐，中国电信按¥1-3/MB计费，1GB就是¥1000-3000。即使开了套餐，高速流量也只有几百MB，之后降速到128Kbps，基本只能看文字。出国前务必在运营商APP确认已开通漫游流量包，并关闭手机的APP自动更新。

6. 中转/转机时怎么上网？

短时间中转（1-4小时），机场WiFi足够用。较长中转或需要稳定网络的话，买一个覆盖中转国家的eSIM最方便——中转时激活，登机时关掉。