In about six months, 3G will be officially shut down for many Australian residents, as Telstra plans to stop the service from June 30.
Telstra representatives say replacements 4G and 5G will be a satisfactory replacement, with coverage expected to be equal by the time the shut down happens.
But some residents say this is unlikely and they may lose the phone service they have.
There are reports from farmers that they have noticed poorer phone service and more drop outs in recent months.
Telstra says it is working to upgrade services.
There are also concerns about technology reliant on 3G technology, which could include weather stations and other on-farm modems.
A rural technology expert says it is worth checking anything on farm to make sure it is not 3G reliant, ahead of time.
They said even devices people might not think about - like medi-alert devices and EFTPOS machines - need to be checked and may need to be upgraded to a 4G version.