PhotonMatters
Telecom subscriber engagement

GSM · New division

Missed Call & Collect Call, for telecom operators.

Zero-cost, no-data engagement rails that reach every subscriber. Verification, opt-in, reminders and reverse-charge connectivity that work on any 2G handset, with no app and no data plan.

In prepaid markets, the cheapest channel wins.

Across Africa, the vast majority of subscribers are prepaid and data-light. A megabyte costs more than a meal in some markets, so SMS gets ignored and apps never get installed. But a missed call costs nothing, and everyone already knows how to “flash” a number to be called back.

PhotonMatters turns that universal behaviour into a programmable engagement layer. A subscriber dials and hangs up, or accepts a reverse charge, and your platform fires the right action: verify, opt in, remind, or connect. No data, no app, no friction, the entire prepaid base becomes reachable.

  • Reaches the data-light prepaid majority
  • Free for the subscriber to use
  • No smartphone or install required
  • New high-margin revenue line for operators
Mobile-money vendor in West Africa
Product · 01

Missed Call Service

Zero-cost subscriber engagement. A subscriber rings a dedicated number and hangs up, the call never connects, nothing is charged, and your gateway fires the action you’ve configured.

Verification & opt-in

Confirm a number or capture consent with a single missed call instead of a paid OTP SMS.

Lead capture

Print one number on packaging or billboards. Every flash becomes a verified, callable lead.

Call-me-back

Out-of-credit subscribers flash your line and an agent or IVR rings them back automatically.

Repayment & top-up reminders

Nudge subscribers to repay a loan or recharge. They reply free, you confirm intent instantly.

Campaign response

Measure pull from radio, TV and SMS blasts in real time. Each missed call is a tracked response.

Vote & poll

Run free yes/no polls and contests with one number per option. No data, no cost to vote.

Product · 02

Collect Call Service

Reverse-charge connectivity. The subscriber places a call they can’t pay for; the receiving party accepts the charge. Conversations happen even when the caller has zero credit.

Subscriber-funded support

Customers reach your helpdesk for free; the business absorbs the charge as a service cost.

Emergency call-back

A subscriber with no balance can still reach a hotline or family contact in an emergency.

B2B reach

Field agents and distributors stay connected to head office even when out of airtime.

Consent-gated billing

The receiving party hears the cost and explicitly accepts before the call connects.

Operator revenue share

Every reverse-charge minute is billed and settled. A new ARPU line on idle prepaid lines.

Collections outreach

Borrowers without credit can still reach your recovery desk to arrange a repayment.

How it works

From a single dial to a fired action.

  1. 01

    Subscriber dials

    A subscriber flashes a dedicated number or starts a reverse-charge call. Free, on any 2G handset.

  2. 02

    Carrier triggers event

    The operator network signals the call to our gateway, which captures the number and campaign.

  3. 03

    Action fires

    OTP, opt-in, reminder, call-back or reverse-charge connect. Routed by the rule you configured.

  4. 04

    Logged & reconciled

    Every event is recorded for analytics, billing and campaign attribution in real time.

Why operators care

Zero cost

to the subscriber to engage

Any 2G phone

works on the simplest feature phone

No app, no data

nothing to install or connect

Massive reach

every subscriber on the network

Connect the channels

Pair GSM rails with your lending campaigns.

Combine missed-call opt-in and collect-call outreach with PhotonMatters campaign and collections intelligence to drive response and recovery, without spending a cent of subscriber data.