For most short trips from Hong Kong, a travel eSIM is the easiest way to get data: buy online, scan a QR code, and land connected. A prepaid SIM can still win when you need a local phone number, your handset does not support eSIM, or a destination has very cheap tourist SIMs for longer stays.
| Factor | Travel eSIM | Prepaid SIM |
|---|---|---|
| Setup | Before flight, QR code | Buy/collect physical SIM |
| Best for | Short trips and multi-country travel | Local number or non-eSIM phones |
| Weakness | Phone must support eSIM | Queue, swap SIM, possible registration |
The rule of thumb
Use an eSIM for trips under two weeks, especially Japan, Korea, Taiwan, Thailand and multi-country routes. Use a prepaid SIM when you are staying a month, need voice/SMS on a local number, or your destination has a regulated tourist SIM that is clearly cheaper than roaming eSIM packs.
Compare travel eSIMs →Frequently asked questions
Is an eSIM cheaper than a prepaid SIM?
For short trips it is often close enough that convenience wins. For long stays, local prepaid SIMs can be cheaper per GB, especially if you need a local number too.
Can I keep my Hong Kong number active with a travel eSIM?
Yes. Most eSIM-capable phones can keep your Hong Kong SIM active for calls or SMS while the travel eSIM handles data.