Virtual Secretary for Your Mobile Phone — How It Works

See also: How to Set Up Call Forwarding to Answering Machine | Automatic Answering Machine for Business 2026 | How Much Does an Answering Service Cost?

TL;DR: A virtual secretary for mobile = a cloud service that answers missed calls, records a message, transcribes it with AI, and sends you an SMS with the full content. Works through call forwarding — no app needed, no hardware, no IT department. Setup: 5 minutes on any phone.

What Is a Virtual Secretary for Mobile?

A virtual secretary is a cloud service that sits between your mobile phone and the caller. When you can't answer, instead of the call going to carrier voicemail (which most callers ignore), it's forwarded to an intelligent system that:

1. Client calls your business number (your regular cell phone)
2. You can't answer — you're with a client, driving, in a meeting, or phone is on silent
3. Call automatically forwards to Heilo.io after a few rings
4. Heilo answers with your professional greeting — the caller hears your business name and a clear call-to-action
5. Caller leaves a message describing their need
6. AI transcribes the recording and sends you an SMS within seconds with the full content and a lead score

The caller simply dials your regular number — they don't know about the forwarding. It feels like they've reached your business receptionist.

How It Works: The Caller's Experience

Understanding what the caller experiences is important. Here's the full flow:

The caller dials your number → phone rings 4–5 times → forwarding activates → Heilo.io answers with your greeting:

"Hi, you've reached [Business Name]. I'm currently with a client. Please leave your name, phone number, and what you need — I'll call you back within the hour."

The caller leaves a message: "Hi, this is Jane Smith. I need a quote for kitchen renovation. My address is 45 Park Street. Please call me at 555-0198."

You receive an SMS within 15 seconds:

Jane Smith, kitchen renovation quote, 45 Park St. Phone: 555-0198. Lead score: 8/10.

You call back between appointments with the address, the scope, and the phone number already in hand.

How to Set Up a Mobile Secretary (Step by Step)

Android

Type this on your phone dialer and press call: **61*[Heilo number]**61#

This activates conditional forwarding — calls only forward when you don't answer (not when you're on the phone or when your phone is off).

iPhone

Settings → Phone → Call Forwarding → On → enter your Heilo.io number

Alternatively, use the USSD code: **61*[Heilo number]#

All Carriers (Universal)

The USSD code **61*[Heilo number]# works on all carriers and both Android and iPhone. For a detailed walkthrough with screenshots, see our Android forwarding guide or iPhone forwarding guide.

Done in under 5 minutes. Every unanswered call now goes to your virtual secretary.

Carrier Voicemail vs Heilo.io

Feature	Carrier Voicemail	Heilo.io
AI transcription	❌ or very limited	✅ Full (Gemini AI, multilingual)
SMS with message content	❌	✅ Instant delivery
Lead scoring (urgency rating)	❌	✅ (1–10 scale)
Custom professional greeting	⚠️ Basic recording	✅ Custom or AI-generated voice
Web dashboard	❌	✅ Full call history and analytics
Multiple language support	❌	✅ English, Polish, German, Spanish...
Callers who leave a message	~30%	~80%+ (professional greeting encourages response)
Price	Free (very limited)	From $19/month

The most important difference: carrier voicemail captures ~30% of callers (most hang up on the generic "leave a message after the tone"). Heilo.io with a professional greeting captures 80%+ because the greeting sounds like a real business, gives clear instructions, and provides a callback timeline.

Typical Use Cases

Solo Professional on Appointments

A physiotherapist, consultant, or financial advisor who spends 6+ hours per day in client meetings. Phone must be silent. Heilo.io captures every call and texts summaries between appointments.

Small Service Business With Fieldwork

A plumber, HVAC technician, or cleaning company owner who's always on-site with hands occupied. Heilo.io captures job details (address, problem, urgency) and delivers them via SMS. You call back between jobs with a prepared quote.

Part-Time Business Owner With a Day Job

You run a side business — photography, tutoring, handyman services — while working a full-time job. During your 9–5, you can't take business calls. Heilo.io captures every inquiry and you process them during your lunch break or after work.

After-Hours Coverage for Any Business

Even businesses with a receptionist need coverage after 5pm, on weekends, and during holidays. Heilo.io provides 24/7 coverage for $19/month — no night shifts, no overtime pay.

FAQ

Does the caller need to do anything differently?

No — they just call your regular number. Forwarding is completely invisible to the caller. They hear your professional greeting and leave a message as if they've reached your office.

Does it work when my phone is off or out of signal?

Yes — Heilo.io is cloud-based. It answers calls independently of your phone's status. The SMS transcription arrives the moment your phone reconnects to the network.

Can I have different greetings for different times of day?

Yes — Heilo.io supports greeting schedules. You can set a business hours greeting ("I'm with a client"), an after-hours greeting ("We're closed until Monday"), and a vacation greeting ("I'm away until [date]").

Do I need to install an app?

No — Heilo.io works entirely through call forwarding and SMS. No app installation, no account login on your phone, no background processes. You set up forwarding once and receive SMS transcriptions like regular text messages. The web dashboard is optional for reviewing full call history.

What if I want to forward only some calls?

The USSD code **61* forwards only unanswered calls (conditional forwarding). Calls you answer yourself go through normally. Heilo.io only activates when you can't pick up.

Summary

A virtual secretary for your mobile phone turns every missed call into a captured business opportunity — with full AI transcription, lead scoring, and instant SMS delivery. No app, no hardware, no IT. Setup takes 5 minutes with a simple forwarding code, and every caller hears a professional greeting instead of silence. For $19/month, it's the simplest way to stop losing clients to missed calls.

• Heilo.io