Telstra explains that its "Blue Tick" means that Samsung’s newest S8 and S8+ handsets, which it says "are the fastest phones available on Australia’s fastest mobile network (based on national average combined 3G/4G mobile speeds)", also provide the "best coverage performance on Telstra’s 4GX service".
The company further advises that up to now, "Telstra’s Blue Tick had only been tested for calls carried over a 3G service. With the transition of voice calls to 4G technology (VoLTE) Telstra has now extended it to its 4GX service".
UPDATE: It's important to note that the S8 and S8+ truly are the first 4G smartphones from Telstra that have received the Blue Tick certification for 3G and a brand new Blue Tick certification for 4GX voice and data. Previous 4G and 4GX capable smartphones on the Telstra network with Blue Tick received the Blue Tick certification for their 3G components only.
Andrew Volard, Telstra’s director of Device Management, spoke of the S8 and S8+ with Blue Tick rating and said, "Australia’s vast and unique geography required mobile devices that could provide the best possible experience to customers in metro areas as well as the bush".
“Our mobile network is Australia’s largest and fastest and customers with a GS8 or GS8+ could experience smartphone data speeds (that are) among the fastest in the world. And because the devices have been calibrated with Australia’s unique conditions in mind, our customers who live and work in the regions will benefit from superior call quality on our 4GX service.
“The new smartphones also have integrated Wi-Fi calling, meaning voice calls will seamlessly transfer between Telstra’s 4GX service and an available Wi-Fi connection, ensuring even greater coverage.”
Meanwhile, Richard Fink, Samsung Electronics Australia vice-president for IT & Mobile, noted that Telstra and Samsung’s close relationship was "built on collaboration and a commitment to deliver superior device and network performance for Australian customers".
“Samsung and Telstra maintain a very close relationship that is founded on years of collaboration to deliver incredible network and device experiences across Australia and for customers in cities and in our regions," he said.
“We’re incredibly proud to announce that the new GS8 and GS8+ smartphones have met the high standards required by Telstra to receive the first 4G Blue Tick certification.”
Samsung’s Galaxy S8 and Galaxy S8+ are "the first devices to achieve Telstra’s Blue Tick on 3G and 4GX".