Japan 1GB 7 days
NTT DOCOMO / KDDI (au) / SoftBank
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Keeping a backup eSIM while travelling
Lost SIM, phone trouble or a network outage — a second line keeps you reachable.
Author: eSIMonline Travel Desk · Travel content desk
Quick answer
- The smallest plan for that country is enough as a backup.
- Install it but leave the line off so it is ready instantly.
When a backup line actually saves you
- Your main SIM is suspended or lost mid-trip
- The network you are on has a local outage
- Your main allowance runs out on a critical day
Related
Plans that fit this trip
Sorted from the lowest price.
Fixed
South Korea 1GB 7 days
SK Telecom / KT / LG U+
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
China 1GB 7 days
China Mobile / China Unicom / China Telecom
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Taiwan 1GB 7 days
Chunghwa Telecom / Taiwan Mobile / Far EasTone
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Hong Kong 1GB 7 days
CSL / HKT / China Mobile Hong Kong / SmarTone
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Singapore 1GB 7 days
Singtel / StarHub / M1
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Vietnam 1GB 7 days
Viettel / Vinaphone / MobiFone
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Thailand 1GB 7 days
AIS / True Move H / NT
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Malaysia 1GB 7 days
Maxis / CelcomDigi
- Data
- 1GB
- Validity
- 7 days
- Hotspot
- Yes
- Technology
- 4G / 5G
- 5G ready
- Hotspot
- Budget
Validity starts on first connection at the destination
from$2.90
Plan data in this build comes from a demo supplier used to exercise the system. Prices and networks are replaced with live data once a supplier API is connected.