# Set up the Mucka phone number Source: https://help.mucka.ai/integrations/set-up-the-mucka-phone-number Category: Integrations Last updated: 2026-09-08 > Set a PIN so you can call Mucka any time from any phone, even when your hands are full. Mucka has a phone number you can ring. Useful when you're driving, your hands are full, or you don't want to fumble with the app. Mucka picks up, you talk, you hang up. Same Mucka as the app, just over the phone. **Ringing Mucka is part of a paid plan**, the same as talking to Mucka in the app. On the Free plan Mucka will still answer, but only to say so and point you at Billing — typing to Mucka in the app carries on working as normal. ## Or just call me on WhatsApp — no PIN needed You can also ring Mucka straight from WhatsApp: open the Mucka chat and tap the call button, the same as you would for anyone else. It's the same number, so there's nothing new to save. Two differences worth knowing: - **No PIN.** WhatsApp already knows it's you, so the call opens straight into the conversation. The PIN below is only for the ordinary phone line, where caller ID isn't proof of anything. - **It needs internet.** A WhatsApp call won't connect on signal alone. If you're in a plant room or somewhere rural with a bar of signal and no data, ring the normal number instead — that's exactly what it's there for. One more difference: on a **WhatsApp** call Mucka can do everything it can do in the app — raise a quote, send an invoice, take a payment. On the **ordinary phone line** you can raise and change quotes and invoices too, but the ones that reach your customer or move money — sending it, taking a payment — are got ready and wait for a tap in the app. Either way Mucka reads anything like that back to you first, the amount out loud and who it's going to, and waits for you to actually say yes. ## Set your PIN first Phone calls to Mucka are gated by a 6-digit PIN. This stops random callers reaching your business data. Pair your WhatsApp first (see [Set up WhatsApp](/help/integrations/set-up-whatsapp)) — the phone PIN sits on top of your WhatsApp pairing, so it won't appear until you're paired. Once you are, head to [**Settings → You → Profile**](/settings/you/profile). Scroll down to the **Phone PIN** card. 1. Tap **Set PIN** 2. Type any 6 digits you'll remember (not 123456, not your year of birth) 3. Confirm That's your PIN saved. Mucka stores it hashed, not in plain text, so even support can't see it. ### Or just tell Mucka on WhatsApp You don't have to open Settings at all. Send an explicit request on WhatsApp: **“Set my phone PIN to”**, followed by your chosen six digits. A number on its own is not enough: Mucka needs to know you mean your own phone PIN. Handy when you're out and not near a computer. Mucka replaces the digits with `******` in the chat history as soon as it's saved, so your PIN isn't sitting in the conversation afterwards. It's stored hashed either way, exactly as it is when you set it in Settings. ## Call Mucka Save the Mucka business number in your phone contacts as "Mucka", then ring it whenever: 1. Mucka answers and asks for your PIN 2. Type or speak your 6 digits 3. Mucka greets you and you're in Mucka asks for your PIN on **every** call. There's no trusted-phone skip, because a phone number on its own is easy to fake, so the PIN is what actually proves it's you. Keep it to yourself and don't share it. ## What you can do on a Mucka call Mucka can: - Answer questions about your business ("what's on tomorrow?", "did the Walkers pay?") - Give your morning or evening briefing - Look up clients, jobs, quotes, invoices - Book jobs and appointments in, and add notes - Add and update clients, sites and projects - Raise a quote or an invoice, and change one you've already raised — *"invoice the Jamieson job, oil boiler service, a hundred and twenty"*. Nothing goes to the customer until you send it - Message one of your own team — *"tell James I'll meet him at Inverary at half eight"*. Mucka reads it back to you first and only sends when you say yes. Your engineers can message the office the same way when they ring in - Draft things for you (a running-late text, a review reply) ready to send later Some things Mucka won't finish over the phone, however you ask: - **Sending anything out** — an invoice or quote email, a text to a customer: Mucka gets it ready and it waits for one tap in the app - **Taking a payment, or undoing one** - **Deleting anything** - **Changing your settings or security** Those wait for you in the app, where you can see exactly what's about to happen before you approve it. ## Lockout protection Three failed PIN attempts and the number locks for a short window. This is to stop someone guessing PINs. If you forget your PIN, head back to [**Settings → You → Profile**](/settings/you/profile) → Phone PIN, clear and reset. You don't need to remember the old one. ## Common gotchas - **PIN doesn't accept the code.** Type slowly, the phone can mis-hear quick taps. If you're being asked to speak the PIN and your accent gets misheard, try typing it on the phone keypad instead. - **Trusted device, but still asked for PIN.** Trust resets after 30 days, or if you change your PIN. Just enter the PIN again to re-trust. - **Calling from a withheld number.** Mucka can't trust withheld numbers, so they always have to enter the PIN. Show your number when ringing. - **Bad reception, voice cuts out.** Mucka's voice agent needs a stable connection. If you're losing signal, switch to WhatsApp voice notes instead, those tolerate signal drops better.