What is a POC radio? How is it different from a regular walkie-talkie?
POC stands for Push-to-Talk over Cellular. Unlike traditional UHF/VHF walkie-talkies that rely on local radio frequencies and have limited range (a few miles), a POC radio uses cellular networks (4G/5G) to enable instant communication. This means you can talk to someone across cities or even nationwide, as long as there is cellular coverage. It works just like a walkie-talkie in operation (press to talk), but the technology behind it is completely different.
Does this product require a SIM card to work?
Yes, a POC radio typically requires a SIM card to access cellular network services. The N39plus comes with a pre-installed SIM card and includes a one-year data plan (up to 800MB/Month*12Month, suitable for regular voice-only communication). The cost of the first year's data plan is included in the purchase price of the device, so no additional payment is required during the first year. After the first year, a fee of $9.90 per year is charged for each radio to cover cellular data costs.
My device shows a SIM is inserted, but it cannot connect to the network. Why?
Several possible reasons: SIM not activated / APN settings missing or incorrect / Service expired / Local carrier incompatibility / Device needs a restart.
If you encounter any of the above situations, please provide your ICCID and order number to our support team.
Why is the signal weak or the connection unstable?
Weak signal is almost always due to cellular coverage:
Location – Basements, elevators, parking garages, metal buildings, rural areas, and mountains have poor coverage.
Interference – Thick concrete walls, hills, or bad weather can affect signal.
Try moving closer to a window or outside. POC radios are not satellite or long‑range RF – they need a live cellular tower.
A: To help you quickly and accurately, please prepare:
Amazon Order ID / ICCID / How many devices are affected / A short video or photo showing the screen, error message, or behavior / What you have already tried.