TL;DR
The simplest missed call response system takes 15 minutes with your phone's own settings and a free-to-install app: forward busy and unanswered calls to a second phone, switch on an auto-reply SMS, keep a callback register and call back at fixed times. It suits 1 to 3 people. When missed calls pass about 10 a day, move to a shared business number with automatic callback, such as TalkEasy.
The simplest missed call response system has four parts and takes 15 minutes to set up with your phone's own settings and a free-to-install app: forward busy and unanswered calls to a second phone, switch on an auto-reply SMS, keep a callback register, and call back at fixed times. It works for 1 to 3 people; when missed calls pass about 10 a day, or a fourth person joins, move to a shared business number with automatic callback.
Each part fixes one way calls get lost. Forwarding gives the caller a second person, the auto-reply tells them you saw the call, the register makes sure every number is called back, and fixed times make the callbacks actually happen.
The 15-minute setup
Minutes 0 to 4: forward busy and unanswered calls. On the shop phone, send busy and no-answer calls to your second phone. On Vi, **67*number# covers busy and **61*number# covers unanswered calls, and **61*number*10*20# forwards after 20 seconds instead of the default 30 (Vi). These are standard GSM codes (they work on most networks; check with your operator). On Airtel, the Airtel Thanks app sets each condition without codes (Airtel); on Jio, use call settings or the MyJio app, and the forwarding service is free (Jio).
Minutes 4 to 9: switch on an auto-reply. Install Auto Text or Auto Message from Google Play on the shop phone, set the trigger to missed calls, and paste a reply like this one:
"Sorry we missed your call. [Shop name] here, on a job now. We'll call you back by [next callback time]. Please reply with your area and AC problem."
Minutes 9 to 12: set the WhatsApp away message. In WhatsApp Business, go to Tools > Away message, turn it on and choose "Outside of business hours". It answers people who message you while you're closed; it does not fire on phone calls (WhatsApp Help).
Minutes 12 to 15: start the callback register and fix your callback times. Open a notebook or a Google Sheet with the four columns below. Agree three times a day when someone returns every missed call, for example 11 am, 3 pm and 6:30 pm.
Full codes for every carrier are in our conditional call forwarding guide. Replies for after hours, busy lines and urgent calls, in English and Hinglish, are in our reply message templates.
The callback register
Every missed number gets a row, including the ones the auto-reply already answered. The two rows below are examples.
| Time of missed call | Caller's number | What they need | Callback time and result |
|---|---|---|---|
| 10:42 am | 98xxxxxx21 | Split AC not cooling, Sector 12 | 11:05 am, visit booked for 4 pm |
| 1:15 pm | 70xxxxxx08 | Price for a gas refill | 3:00 pm, no answer, WhatsApp sent |
A row isn't finished until the last column is filled. At closing time, any empty last cell becomes tomorrow's first call.
Why fixed callback times work
Technicians can't stop mid-job every time the phone buzzes. Three fixed times turn callbacks into a routine, and they let the auto-reply promise a real time instead of "soon". Urgent calls, such as an AC that has stopped cooling in a home with a baby or an elderly person, skip the queue.
What this system can't do
- It can't answer. The caller still waits for your callback.
- The auto-reply lives on one phone. It works only on the phone with the app, and only while that phone is on.
- Nothing is shared. If the second phone takes a call, only that person knows about it until the register is updated.
- Nobody picks up at night. Evening callers wait for the first callback slot.
When to upgrade, and to what
| Sign | Upgrade to | Example, price before GST |
|---|---|---|
| More than about 10 missed calls a day | Business number with automatic callback | TalkEasy missed-call automation |
| A fourth person joins, or two people call one customer | One shared number for the team | TalkEasy Pro, ₹999 a month, unlimited users |
| Many enquiries arrive after closing | AI receptionist | Superfone, ₹9,000 per 6 months |
| You advertise "give us a missed call" | Missed-call campaign number | Vi Business, from ₹1,000 a month |
| You want replies from a sender name | SMS provider that accepts forwarded calls | Knowlarity, ₹5,000 a month plus 16 paise per SMS |
How we compared: prices from each provider's official page (TalkEasy, Superfone, Vi Business, Knowlarity), checked in September 2026. Prices exclude 18% GST.
If you get only a handful of missed calls a week, stay on this system. To compare every no-code option side by side, read five no-code ways to auto-reply to missed calls. If three of you share the phone, add an on-call roster for a 3-person team.
Where TalkEasy fits
TalkEasy by GrowEasy is the step up from this system. It gives your team one business number in an Android app, and with missed-call automation on it calls back customers whose calls were missed, 24x7, following your routing and availability rules (TalkEasy). Call analytics show missed calls, answer rate and peak calling hours, so the counting the register does by hand happens on its own (call analytics).
Keep the WhatsApp away message and the reply templates running alongside it, because TalkEasy's missed-call automation is built around calling customers back.
On price, TalkEasy Pro costs ₹999 a month plus GST for unlimited users, with 3 hours of talktime a day and extra talktime at ₹49 an hour plus GST. The pricing page lists what each plan includes.
If callers need a live answer at night rather than a callback, read our AI receptionist guide for India. For "give a missed call" campaign numbers, see the missed call alert service guide.
Upgrade when you're ready: TalkEasy missed-call automation.
Last reviewed 24 September 2026.
