《SONET期刊》
Postmarks
Notes on travel, data, and saying it well. Thirty short lessons on eSIMs, thirty destination guides, and the tools in between.
类别
主题
类型

ARTICLE · INSTALLATION
How to install an eSIM in two minutes
A step-by-step guide to installing an eSIM: what you need first, the actual install steps, and how to confirm it worked before you travel.
阅读时间:0分钟 · 2026年2月
Japan · FROM €0.78GUIDE · ASIA
Japan for the first time: a week that says it well
A first-timer's Japan itinerary built on restraint: three unhurried days in Tokyo, three in Kyoto, and a final day left open for Nara, Osaka or Kamakura.
阅读时间:0分钟参见Japan计划 →
最新课程
eSIM教育 · 30 主题 →工具
你的手机支持 eSIM 卡吗?
两个问题,一个简单的答案。
查看我的手机明信片·月刊
每月一封信。绝无垃圾邮件,只有诗句。
完整索引
30 课程 · 30 目的地 · 3 工具
一、教育大纲
编号 01
What is an eSIM? A plain-language guide编号 02
eSIM vs physical SIM: what actually changes编号 03
Is your phone eSIM compatible? The full list编号 04
How to install an eSIM in two minutes编号 05
Activate before you fly: the pre-flight ritual编号 06
Data roaming explained (and why it costs so much)编号 07
How much data do you need for a week abroad?编号 08
Keep your number, carry our data编号 09
Dual SIM done right: home line plus travel data编号 10
What happens when your plan runs out编号 11
Topping up abroad without tears编号 12
eSIM on iPhone: step by step编号 13
eSIM on Android: step by step编号 14
QR code vs one-tap install编号 15
APN settings, demystified
What is an eSIM? A plain-language guide编号 02
eSIM vs physical SIM: what actually changes编号 03
Is your phone eSIM compatible? The full list编号 04
How to install an eSIM in two minutes编号 05
Activate before you fly: the pre-flight ritual编号 06
Data roaming explained (and why it costs so much)编号 07
How much data do you need for a week abroad?编号 08
Keep your number, carry our data编号 09
Dual SIM done right: home line plus travel data编号 10
What happens when your plan runs out编号 11
Topping up abroad without tears编号 12
eSIM on iPhone: step by step编号 13
eSIM on Android: step by step编号 14
QR code vs one-tap install编号 15
APN settings, demystified编号 16
Why your eSIM shows "No service" (and how to fix it)编号 17
Hotspots and tethering on a travel eSIM编号 18
eSIM security: is it safer than plastic?编号 19
WhatsApp, iMessage and your eSIM编号 20
Country vs regional vs global plans编号 21
Two countries, one trip, one eSIM编号 22
eSIM on cruises and ferries编号 23
In-flight data: myths at 30,000 feet编号 24
Business travel: receipts, VAT and expenses编号 25
How eSIMs actually work: the tech behind the tap编号 26
Battery myths, tested编号 27
Unlocked vs carrier-locked phones编号 28
eSIM for tablets and smartwatches编号 29
After the trip: should you delete your eSIM?编号 30
The travel-day checklist
Why your eSIM shows "No service" (and how to fix it)编号 17
Hotspots and tethering on a travel eSIM编号 18
eSIM security: is it safer than plastic?编号 19
WhatsApp, iMessage and your eSIM编号 20
Country vs regional vs global plans编号 21
Two countries, one trip, one eSIM编号 22
eSIM on cruises and ferries编号 23
In-flight data: myths at 30,000 feet编号 24
Business travel: receipts, VAT and expenses编号 25
How eSIMs actually work: the tech behind the tap编号 26
Battery myths, tested编号 27
Unlocked vs carrier-locked phones编号 28
eSIM for tablets and smartwatches编号 29
After the trip: should you delete your eSIM?编号 30
The travel-day checklist













