The New Zealand Warriors' rugby league ground has had a name change, reverting from Ericsson Stadium to Mt Smart Stadium.
The venue, which will also be used by Counties-Manukau in the Air New Zealand Cup provincial rugby competition, has reverted to its original name.
Auckland Regional Council chairman Mike Lee said Ericsson, which had moved out of the retail cellphone market in New Zealand, had decided not to renew its contract.
Other offers were considered, but the council felt they did not suit.
"I personally was more than happy to go back to its true name of Mt Smart," he said.
"Mt Smart is and old and well-remembered name and it gained international renown during the 1990 Commonwealth Games."
Lee said the council was not actively pursuing a sponsor to replace Ericsson.
"But given the issue of rates, we are obliged to listen seriously to any applicant who is interested."
The venue, the main arena of which was once used for athletics, was renamed Ericsson Stadium when the Warriors entered Australia's National Rugby League in 1995.