Every time your phone rings and you cannot answer, you are gambling with a lead. Most callers will not try again. Missed call text back is the simplest way to stop that happening: an automatic SMS sent in your name within seconds of a missed call, before the caller has time to dial someone else.
This guide explains what missed call text back is, how it works, who needs it, and how to get started.
What is missed call text back?
Missed call text back is an automated service that monitors your UK phone number. When a call goes unanswered, it instantly sends a pre-written SMS to the caller in your name. The caller receives your message within seconds, before they have time to search Google for an alternative.
It is not voicemail. Voicemail waits for the caller to actively listen. A text back arrives in the caller's message thread immediately and is far more likely to be read and acted on.
Key difference from voicemail: SMS open rates are around 98%. Voicemail retrieval rates are under 20%. A missed call text back gets your message seen. Voicemail gets ignored.
How missed call text back works
The process is straightforward:
- A caller dials your UK phone number
- You miss the call (on a job, driving, on another call)
- TextBack Pro detects the unanswered call within seconds
- It sends your pre-written SMS to the caller automatically
- The caller gets your message before they search for someone else
You do not need to do anything. No app, no manual trigger, no listening to voicemail. The SMS goes out whether you are on the tools, in a meeting, or simply driving between jobs.
How to set up missed call text back
Setup takes under 5 minutes and does not touch your existing number. You keep the number your customers already have saved.
- Sign up and get your dedicated UK number. This is the number that will send the SMS replies. It is assigned automatically, with no porting and no waiting.
- Turn on conditional call forwarding on your existing phone. This tells your network to redirect a call to your new number only when you do not answer, are on another call, or your phone is off or unreachable. It is a setting on your handset or a short dial code from your network, not a new SIM or contract.
- Write or choose your SMS template. Use one of the examples further down this page, or write your own in your own voice.
- Test it. Call your own number from another phone and let it ring out. You should get the text back within a few seconds.
Conditional call forwarding codes differ slightly by network. See our full guide to setting up call forwarding on EE, O2, Vodafone, Three and BT for exact steps on iPhone, Android and landlines.
No hardware, no app for your customers. The caller does not need to install anything. They just receive a normal SMS, the same as any other text message.
Who needs missed call text back?
Any UK business that cannot always answer its phone while working is a strong candidate. The impact is highest in trades and field-based services where calls are missed mid-job.
Missed call text back vs the alternatives
Missed call text back is one of several ways to handle calls you cannot pick up. Here is how it compares to voicemail, a live answering service, and the newer AI voice receptionists now advertised to UK trades.
| Option | Response time | Typical cost | What it actually does |
|---|---|---|---|
| Missed call text back | Seconds | £47/month flat | Auto-texts the caller instantly and can hold a two-way SMS conversation |
| Voicemail | Never, unless they leave a message and you call back | Usually free | Waits for the caller to record and hope you listen, most never do |
| Live answering service | Immediate, if an agent is free | £50–£500/month, often per-minute or per-call | A human answers and takes a message; still needs you to call back |
| AI voice receptionist | Immediate, by voice | £29–£100+/month | An AI answers the call by voice instead of texting; useful if callers prefer talking, but a bigger change to how your phone behaves |
| Doing nothing | None | £0 upfront, high cost in lost jobs | The caller hangs up and rings the next business on the list |
Voicemail and doing nothing cost you the job outright in most cases: 91% of callers won't leave a voicemail, and the ones who do are still waiting on you to listen and call back. A live answering service fixes the response problem but reintroduces cost per call or per minute, and you're still relying on someone else to take a good message. An AI voice receptionist answers by voice rather than text, which suits some businesses, but it changes how every call behaves rather than only stepping in when a call is missed.
Missed call text back sits in between: it is faster than a live service, cheaper than most AI voice setups, and only activates on the calls you would otherwise have lost entirely. See the full comparison of every option for a detailed cost and feature breakdown, or read how we stack up against specific providers in our alternatives comparisons.
What to say in your missed call text back
The best missed call SMS messages are short, personal, and include a specific callback promise. Here are three proven formats:
How to choose a missed call text back service
Several providers now offer some version of missed call text back. Before you sign up, check for these:
Set up missed call text back in under 5 minutes
Every caller gets an automatic reply within seconds. No setup fee. Works on all UK networks.
Start free 14-day trial →How much does missed call text back cost in the UK?
TextBack Pro is one plan at £47/month: up to 300 leads a month, one dedicated UK number, a two-way AI conversation, Google Calendar booking, a lead summary by email and a follow-up for quiet leads. No setup fee, no per-message charges, no contract.
It starts with a 14-day free trial and no credit card required.