Telstra will be upgrading its mobile base station in Grose Vale by adding additional infrastructure to bring a better 4G user experience and preparation for 5G to the community, however the works will require a series of temporary outages or reduction in mobile coverage.

The works required are extensive and will temporarily impact Telstra mobile coverage at various times from Monday, 16 September, until Tuesday, 24 September 2024.

There will be a disruption of up to 8 hours on Monday 16 September, with network coverage being restored at the end of the day.

This will be followed by a full site outage between 7am on Tuesday 17 September until 5pm Thursday 19 September 2024. There will be no mobile network coverage during this period.

There will be a disruption of up to 8 hours on Friday 20 September, with network coverage being restored at the end of the day. There will be no network disruptions on Saturday 21 September and Sunday 22 September. This will be followed by some further temporary disruptions of up to 4 hours for integration and call testing until Tuesday, 24 September.

If all goes to plan and weather permitting, residents should notice improvements in Telstra mobile services from Tuesday, 24 September.

Telstra mobile customers will receive text messages advising of the upcoming work.

Landline services, NBN internet services and mobile coverage from any other providers in the area will not be impacted.

Telstra Regional General Manager, Michael Marom, said while our crews need to work during daylight for safety, we'll only be switching off the site when we need to and will have it back on as quickly as possible.

"Where possible we will just be switching off the parts of the tower we are working on, leaving the rest operational. While coverage and capacity will decline during this time, we want to keep the amount of time the site is off air to an absolute minimum," Mr Marom said.

"There's never a good time to undertake this sort of work but once it is completed, it will mean better mobile services for local residents," Mr Marom said.

"As a company, we heavily invest in improving regional connectivity and this site is another example of our commitment. Over the past seven years to the end of FY23, Telstra invested $11 billion in our mobile network nationally, with $4 billion of this invested in our regional mobile network."

Tips for improving connectivity while works are underway