How-to guides
Travel guides
Buying and installing eSIMs, managing data, and exclusive deals — step-by-step peace of mind.
- eSIM
- Embedded SIM added by scanning a QR code — no physical card to swap.How to buy
- APN
- Access Point Name: the setting your phone uses to reach mobile data — fill in as shown on your card.Setup guide
- ICCID
- The 19–20 digit SIM serial used for usage checks and top-ups.How to find it
Maintained by B4travel · reviewed · all 32 guides preserved verbatim (Traditional Chinese); the Avis rental offer runs for bookings and pick-ups through 2026-12-31 — see its card.
Buying eSIM
Buying eSIM
Buy and receive your eSIM (usually about a minute)Pick a plan and the eSIM option; the QR code arrives by email in about a minute.Read more
Buying eSIM
Canada SIM picks for aurora trips via the USAConnect via the USA to Yellowknife for the aurora without losing signal.Read more
Buying eSIM
Mainland China SIM picks with no firewall hassleBuy in Hong Kong, skip the firewall, plug and play on 5G — for Shenzhen, Guangzhou and home visits.Read more
Buying eSIM
Indonesia SIM picks with unlimited 5G dataNo-setup unlimited 5G data for Bali trips and backpacking.Read more
Buying eSIM
Japan SIM picks on SoftBank, docomo and KDDINative cards across SoftBank, docomo and KDDI with 5G and unlimited-data options.Read more
Buying eSIM
Korea SIM picks on SK TelecomSK Telecom cards with no setup and unlimited data.Read more
Buying eSIM
Macau SIM picks with unlimited 5GPlug-and-play unlimited 5G for short trips and family visits.Read more
Buying eSIM
Malaysia SIM picks that work at LegolandWorks at Legoland and on Singapore transits.Read more
Buying eSIM
New Zealand SIM picks with unlimited 5GPlug-and-play unlimited 5G for working holidays and travel.Read more
Buying eSIM
Singapore SIM picks with unlimited 5GPlug-and-play unlimited 5G for leisure and business trips.Read more
Buying eSIM
Taiwan SIM picks with unlimited 5GPlug-and-play unlimited 5G for independent travel and family visits.Read more
Buying eSIM
Thailand SIM picks with unlimited 5GPlug-and-play unlimited 5G for Bangkok trips and Phuket holidays.Read more
Buying eSIM
Australia SIM picks on TelstraTelstra cards with no setup and unlimited data for students and independent travel.Read more
Buying eSIM
USA SIM picks with unlimited 5G dataPlug-and-play unlimited 5G for independent travel and overseas students.Read moreData & top-up
Data & top-up
Self-serve SIM top-up guideTop up data or extend days yourself via the usage-check page, no support ticket needed.Read more
Data & top-up
Using the data-usage checkerCheck remaining data and expiry any time before or during your trip.Read more
Data & top-up
How to claim extra high-speed dataClaim it now on the free 500MB page; the old QR-pack flow below is preserved verbatim.Read more
Data & top-up
Extend your plan days mid-tripExtend days yourself now (see the self-serve top-up guide); the old WhatsApp flow below is preserved verbatim.Read more
Data & top-up
Add high-speed data mid-tripAdd data yourself now (see the self-serve top-up guide); the old WhatsApp flow below is preserved verbatim.Read moreDevice setup
Device setup
How to find your ICCIDSupport may ask for the ICCID: three ways to find it on Android, iPhone, or the physical card.Read more
Device setup
Check if your phone supports eSIMDial *#06#: an EID means eSIM is supported; MEID is not EID.Read more
Device setup
Add your eSIM to Android / iPhoneAdd the eSIM on Android and iPhone from Settings: scan the QR code, then set it as the primary SIM.Read more
Device setup
iPhone APN setup tutorialSettings → Mobile Data → Mobile Data Network: enter the APN from your card; going back saves it.Read more
Device setup
Android APN setup walkthroughSettings → Network & Internet → Mobile network → Access Point Names (APN); fill in as shown on your card.Read more
Device setup
Hong Kong SIM real-name registration guideInsert the SIM, wait for the activation SMS, follow the link to submit details; iAM Smart is fastest.Read moreExclusive deals
Exclusive deals
B4travel Avis/Budget rental discount (book and pick up through 31 Dec 2026)Up to 10% off Avis/Budget via the dedicated link for bookings and pick-ups 16 Dec 2025 to 31 Dec 2026. Redemption and terms follow the official notice; details inside.Read more
Exclusive deals
B4travel SIMs land on YohoNo-setup travel SIMs now on Yoho — for Japan, Korea, Taiwan, Thailand and multi-country trips.Read more
Exclusive deals
New Zealand 5G card upgraded to cover AustraliaOne card for New Zealand and Australia — plug in on arrival for 5G.Read more
Exclusive deals
Limited Japan card with 10GB high-speed data dailyUp to 10GB of high-speed data a day on SoftBank 5G across Japan.Read more
Exclusive deals
B4travel x X Pay Father's Day flash deal (ended 22 Jun 2025)New X Wallet members saved HK$80 on HK$200 with code XPAYJU8KA; the window ended 22 Jun 2025.Read more
