LINE vs WhatsApp — Asian vs Western IM Giants
Updated 2026-04-24
TL;DR
LINE 195M MAU dominates Japan/Taiwan/Thailand/Indonesia, registration is hard-locked to phone numbers from those 5 countries (HK/JP/KR/TW/TH), Letter Sealing E2EE is optional. WhatsApp 2.5B MAU across 180+ countries, Signal Protocol E2EE on by default, blocked in CN/KP/IR. LINE wins on stickers ($260M+ sticker revenue in 2024), Official Accounts for businesses, LINE Pay (Japan/Taiwan-dominant), and an integrated suite (LINE NEWS / LINE Manga). WhatsApp leans on messaging itself + WhatsApp Pay (India/Brazil) + WhatsApp Business + API.
| Dimension | LINE | |
|---|---|---|
| MAU | 195M (JP 97M / TW 21M / TH 54M dominant) | 2.5B (180+ countries) |
| Registration restrictions | Hard-locked to HK/JP/KR/TW/TH phone numbers | Any global phone (except blocked countries) |
| End-to-end encryption | Letter Sealing (since 2016, opt-in) | Signal Protocol always-on (messages/calls/media) |
| Stickers / emoji ecosystem | 1M+ official stickers ($260M+ revenue 2024, JP-led) | Basic emoji + user-created stickers (not a revenue line) |
| Payments / fintech | LINE Pay (JP/TW dominant) + LINE Bank (JP 2024) | WhatsApp Pay (India UPI / Brazil Pix) |
| Business ecosystem | Official Account (6M+ merchants in JP/TW) + Mini Apps | WhatsApp Business + API (2M+ enterprises globally) |
| Regional blocks | Mainland China + DPRK (2 hard blocks) + 5-country reg lock | CN/KP/IR (3 hard blocks) + UAE/SA/QA voice-call restricted |
| Unblock strictness | 2-star — network layer lenient, but reg phone number is the hard bottleneck | 3-star — IP blacklist exists, voice calls need specific exit regions |
Verdict
Live in Japan/Taiwan/Thailand, need LINE Pay or local merchant services → LINE (registration requires a local phone). Anywhere else or need global reach → WhatsApp (works globally by default). LINE in mainland China needs both an overseas exit and a JP/TW/TH phone (registration barrier is high). WhatsApp in China needs an overseas exit but works with any global phone. WhatsApp's encryption is stronger by default; LINE's Letter Sealing is opt-in.