If you've been in HCMC for more than a week, someone has already asked you "What's your Zalo?" Here's what it is and why you need to install it on day one.
What Zalo is
Zalo is Vietnam's dominant messaging app — think WhatsApp, but made in Vietnam and used by roughly 75 million people. It does text, voice, video, group chats, voice notes, and file sharing. It's free, works on iOS and Android, and has a web client at chat.zalo.me.
Why you can't skip it
In Vietnam, Zalo is the default. Your landlord uses Zalo. Your agent uses Zalo. Your Grab driver will follow up on Zalo. The laundry service, the dentist, the gym membership admin, the office receptionist — all Zalo. WhatsApp exists but is mostly for communicating with people outside Vietnam. If you try to insist on SMS or email, you will miss messages and people will think you're being difficult.
Setting it up
- Download Zalo from the App Store or Google Play.
- Register with your Vietnamese phone number. A foreign number will sometimes work but gets flagged more often — use a local SIM or eSIM.
- Complete your profile with a name and photo. A blank profile looks suspicious and some people won't respond.
- Allow notifications. Messages move fast.
How Vietnamese people use Zalo (that differs from WhatsApp)
- Voice notes are the default. Expect a 30-second voice note back instead of a typed reply. Nobody is being rude — it's just the local norm.
- Quick photo sharing. Landlords often send 5–10 property photos in a single burst — no captions, just photos. Ask follow-up questions rather than waiting for explanation.
- "Stickers" are used constantly. The sticker store has thousands of free packs. Vietnamese humor relies heavily on them.
- Groups are huge. You'll get added to a building WhatsApp — sorry, Zalo — group for your apartment complex. Useful for outages, delivery notices, neighborhood alerts.
Privacy settings worth changing
- Turn off "who can find me by phone number" if you give your number to landlords (reduces spam messages).
- Turn off read receipts if you find them stressful.
- Set status to "hidden" unless you want everyone to know when you were last online.
Scam notes specific to Zalo
- Never click shortened links (bit.ly, tinyurl) sent by someone you don't know. Phishing for bank logins is common.
- Fake agent accounts often have no profile photo, no Zalo friends in common, and a name that doesn't match the email signature you first got. Verify before sending personal info.
- "Bank transfer first, view the apartment later" — still the #1 scam pattern, now with QR codes. Don't.
One more thing
Zalo also has a payment feature (ZaloPay). It works, but you need a Vietnamese bank account to connect it. Most expats stick to Grab's in-app payment and bank transfers via their own banking app instead — it's fine to skip ZaloPay unless a business specifically requires it.
Welcome to Vietnam. Now add your landlord on Zalo.