By Priya Nair · Ops & support · 2026-08-23 · 6 min read
If you want WhatsApp Business but you don't want customers texting your personal number, you need a second number that's built for it. Here's the exact process I walk people through: pick a WhatsApp-ready US number, register WhatsApp Business on it, and (if you're doing real volume) connect the official Cloud API for a shared inbox and broadcasts.
It takes about 20 minutes. Let's go step by step.
Your personal number does two jobs badly when you bolt WhatsApp Business onto it. One, every customer now has your private line forever. Two, only one person can use the WhatsApp Business app at a time, so your team can't share replies.
A separate business number fixes both. You keep your personal number private, you can hand access to a teammate, and you can wipe or reassign the number later without touching your own contacts.
You now have a number you can use from the browser and the mobile app. See full rates on the pricing page — calls are $0.03/min and SMS $0.02/msg if you also want plain calling and texting on the same line.
Heads-up: before you move on, send yourself a test SMS to the new number and confirm it lands in your G100 inbox. If SMS delivery works, WhatsApp verification will work too.
Download the WhatsApp Business app (not regular WhatsApp) on your phone from the App Store or Google Play. If you already use personal WhatsApp on that phone, that's fine — WhatsApp Business is a separate app and can run alongside it.
Common mistake: people request the code, get impatient, and hit resend three times. Every resend restarts the timer and can trigger a longer cooldown. Request once, wait a minute, check your G100 inbox, then use the call option if needed.
Once verified, fill in the basics so customers trust the chat:
That's a complete WhatsApp Business setup on a private, dedicated number. For a solo operator or a small shop, you can stop here.
The phone app is fine for one person. The moment you have a team, or you want to send broadcasts and use message templates, you want the official WhatsApp Business Cloud API. This is the same infrastructure big companies run on, and it gives you:
G100 provides the Cloud API through a one-click embedded signup for $10/month. Here's how:
Heads-up: a number can live in the phone app or on the Cloud API, not both at once. If you already registered it in WhatsApp Business (Step 3) and now want the API, you'll migrate that number over during signup. Plan for a short break in messaging while it moves.
If you're a one-person business answering chats yourself, the phone app on a dedicated G100 number is enough — cheap, private, done in minutes. If you have a team, run promotions, or need templated automated messages, add the Cloud API. You can always start with the app and upgrade later.
Either way, the foundation is the same: a real, WhatsApp-ready number that isn't your personal line. Grab one at app.g100.us and check the pricing page for the full breakdown.
First month $4.99 (activation included), then $1.95/mo. Calls, SMS & WhatsApp in one app. No contract.
Get your number →