■ For customers in Australia

Trifa's Australia Plan provides access to the following two providers 

・Telstra Mobile 

・Optus AU

Currently, Triffa provides service by connecting to the provider with the stronger signal in the area where you are staying. However, depending on the environment, this design may not work, resulting in slower transmission speeds and unstable connections. 

If you experience such problems, we apologize for the inconvenience, but please try switching providers manually as described in the following procedure. 

＜Manual Switching Procedure＞ 

■Is it possible to choose/select the network provider for the line? 

 Network coverage area of each provider: 

<Optus AU> 

http://www2.optus.com.au/egmap_mob/ 

＜Telstra Mobile>

https://www.telstra.com.au/coverage-networks/our-coverage 

If you have any questions or concerns, please feel free to contact our chat support .