Old iPhones failing to connect to Telstra network following new software update WhistleOutTelstra warns older iPhones may be unable to connect to Triple Zero Australian Broadcasting Corporation‘Killed the ability to call 000’: iPhone update backfires on Telstra users theage.com.auMajor iPhone software issue causing triple-0 outage resolved after 12 hours thewest.com.auTelstra customers with older iPhones having issues making calls, including to Triple Zero 9News.com.au