LINE
Japan and Taiwan's dominant messaging app. Locals strongly prefer it over WhatsApp.
What LINE is
LINE is the dominant messaging app in Japan and Taiwan, where locals strongly prefer it over WhatsApp or iMessage. Beyond chat and voice or video calls, it functions as a hub for adding friends via QR code, sharing locations, and even payments and official business accounts in some regions. Travelers find it essential for staying in touch with hosts, guides, tour operators, and friends made along the way.
What it does for travelers
- ✓Free text, voice, and video calls over data or Wi-Fi
- ✓Add contacts instantly by scanning a QR code in person
- ✓Share live or pinned locations to coordinate meetups
- ✓Stickers and group chats that locals use heavily
- ✓Official accounts for shops, hotels, and services in Japan and Taiwan
Good to know
- Free to download and use over an internet connection
- Registration uses a phone number, and number changes can complicate transferring an account
- Calls and messages require data or Wi-Fi
- Most popular in Japan, Taiwan, and Thailand; less common elsewhere
Tips from the road
- Have LINE installed before you arrive so you can add hosts and guides on the spot by QR code
- Many Japanese and Taiwanese businesses prefer LINE over email for quick replies
- Use the QR add feature instead of asking for phone numbers, which is the local norm
- Back up your chats and note your registered number, since reinstalling on a new device can be tricky
When to reach for it
Install LINE when traveling in Japan, Taiwan, or Thailand and you need to reach locals, since many of them won't use WhatsApp and expect to connect on LINE.
Travelers use LINE in
LINE — frequently asked
Do I need a phone number to use LINE?
Yes, LINE registration is tied to a phone number for verification. Keep that number accessible, as switching numbers or devices can complicate account access.
Is LINE free for international calls?
LINE-to-LINE calls and messages are free over data or Wi-Fi, regardless of country. You only pay for the data you use.
Why do people in Japan use LINE instead of WhatsApp?
LINE became the standard messaging app early in Japan and Taiwan and built deep local adoption, so most residents and many businesses default to it.