PoC or a two-way radio system: which is right, and cheaper?

The short answer

There is no single winner, and anyone who tells you otherwise is usually selling one of the two. The honest answer is that it depends on three things: where your people work, how many of them there are, and how much a lost minute of communication costs you. Get those three straight and the answer usually becomes clear.

As a rule of thumb: PTT over cellular (PoC) tends to win when your teams are spread out, mobile coverage is good, and you want low upfront cost and fast deployment. A traditional two-way radio system (LMR) tends to win when you need guaranteed coverage on a defined site, independence from public networks, or communications that simply cannot fail. Most of this guide is about telling those situations apart, and about the cost question, which is more subtle than "which is cheaper?".

The two approaches, in a sentence each

PoC (PTT over cellular) turns a smartphone or rugged handheld into a two-way radio that talks over mobile networks (4G/5G) or WiFi, borrowing coverage that already exists, with no towers or repeaters of your own. Our full PoC guide covers how it works.

LMR (land mobile radio) is the traditional approach: your own private radio network, with handsets and mobiles talking through repeaters on masts, over licensed frequencies you control. DMR is the most common digital LMR standard today. You build the coverage, and you own it.

The cost question, honestly

"Which is cheaper" has no fixed answer because the two solutions load their costs differently over time. The clearest way to see it is capex versus opex: money spent upfront to own infrastructure, versus money spent monthly to use a service.

A two-way radio system is capex-heavy: you pay a substantial amount at the start for infrastructure, licences and devices, then relatively little to run it. PoC is opex-heavy: little or nothing upfront beyond the devices, then a recurring per-user subscription for as long as you use it. Here is how the same cost categories fall for each:

The practical consequence is a crossover. PoC is almost always cheaper to start, and often cheaper overall for smaller or shorter-term deployments. But because the subscription runs forever and scales with every user, a large fleet kept for many years can eventually cost more in cumulative subscriptions than a one-off radio network would have. Where that crossover falls depends on your fleet size, how long you'll run it, and local prices, which is exactly why a blanket "X is cheaper" claim is misleading.

A fair way to compare is total cost of ownership over the period you actually expect to use the system, typically three to five years, counting everything: infrastructure, devices, licences, subscriptions, maintenance and the cost of downtime. The needs analysis is built to scope this to your budget, so the quotes you receive are grounded rather than guessed.

Coverage: usually the real deciding factor

Cost gets the attention, but coverage is what most often decides the answer, because it's the one thing you can't buy your way around after the fact.

PoC works wherever there's a usable mobile signal. In an African context that's a genuinely strong position for many operations: mobile operators have pushed 4G coverage to roughly 78% of the population across the continent, and far higher in the big markets, at around 85% in Nigeria, 97% in Kenya, and over 99% in South Africa¹. If your people work in and around towns, along main routes, or across a wide region, PoC's borrowed coverage is hard to beat.

But mobile coverage thins out, sometimes to nothing, in exactly the places heavy industry operates: deep in a mine, on a remote farm or reserve, inside a large steel-framed building, or offshore. If your operation lives in one of those coverage gaps, no subscription will change that. A two-way radio system engineered for the site, or an on-premises PoC system on a private network, is then the only reliable answer. Coverage where your people actually are is the first question to settle, and the rest follows from it.

When each one wins

You don't always have to choose

The two approaches aren't mutually exclusive. A gateway can bridge a PoC system to an existing two-way radio network, so cellular users and radio users share the same talk groups. That lets you keep a proven on-site radio system where coverage and reliability matter, while extending reach to remote staff, managers, or other sites over cellular. This is often the most cost-effective answer for operations that have outgrown one approach but do not want to abandon the other.

How to decide: a five-minute framework

Work through these in order. The first clear "must-have" usually points to the answer:

• Coverage first. Is there reliable mobile signal everywhere your people work? If no → lean radio (or on-prem PoC on a private network). If yes → PoC stays in play.
• Criticality. Would a brief outage risk safety or serious loss? If yes → lean radio or mission-critical PoC. If no → PoC stays in play.
• Geography. One defined site, or spread out / cross-border? Defined site → radio is efficient. Spread out → PoC's borrowed coverage shines.
• Fleet & horizon. Large fleet kept many years → owning (radio) may be cheaper long-term. Small or short-term → PoC's low start cost wins.
• Budget shape. Prefer a big one-off spend you own, or a predictable monthly cost? That preference often breaks a close call.

This is exactly the logic the RadioSelect needs analysis runs for you, weighing your specific coverage, criticality, scale and budget, and it ends with a clear recommendation and a vetted supplier who can deliver it.

Common questions

Is PoC cheaper than a two-way radio system?

Usually cheaper to start, since there is little or no infrastructure to buy. Over several years and a large fleet, the per-user subscription can add up to more than a one-off radio network would have cost. The honest comparison is total cost of ownership over the period you'll actually use it, not the sticker price on day one.

Do I need a licence for PoC?

Generally no. PoC runs over the mobile operator's already-licensed network, so there is no separate spectrum licence for you to obtain. A traditional radio system using licensed VHF/UHF frequencies usually does require a licence from the national regulator, and requirements vary by country.

Can PoC and two-way radios work together?

Yes. A gateway can bridge the two so cellular and radio users share the same talk groups. This is a common way to extend a reliable on-site radio system to remote staff or other sites over cellular.

Is PoC reliable enough for business use?

For most operations in areas with good mobile coverage, yes. Where coverage is weak or communications are safety-critical, a dedicated radio system, or a mission-critical grade of PoC, is the safer choice. Coverage where your people work is the deciding factor.