Optus Wi-Fi Talk: make calls even when the mobile network sucks
Trying to make a mobile call on the Optus network but don't have any coverage? If you're able to hook into Wi-Fi instead, new apps for Android and iPhone could save your bacon.
The newly-launched Wi-Fi Talk app lets you use any Wi-Fi network your phone is connected to make calls, even if your Optus reception is iffy. That could be especially useful in office situations, since in-building coverage is variable for every mobile network. Latch onto your office network instead and you should be able to call trouble-free – just use the app rather than your regular dialler.
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- ALSO READ: Mobile data sharing on Optus: how it works
So why use Wi-Fi Talk rather than a dedicated chat app such as WhatsApp or Viber? The main benefit is that you can make and receive calls and texts using your existing mobile number. The app works for all current Optus contract and prepaid plans, and you'll pay the same rates to make calls as if you were using the regular mobile network. (Note that the app won't allow Wi-Fi calling for other providers, such as Amaysim, that use the Optus network -- only Optus customers can use it to make outbound calls and texts. It also won't work overseas, even if you've switched on roaming.)
You can download the app for iPhones from the iTunes store below, and the app for Android from Google Play. iPhones need to be running iOS 6.0 or later; Android devices must be Android 4.0 or later.

Can I get a mobile phone that receives and makes calls only.
Hi Beverley,
Thanks for reaching out.
If you are referring to basic phones with no data, you may want to read this page first. Most basic phones uses 2g and most networks now use the 3g or 4g network.
To search for a phone best for you, you may want to visit this page and compare options. If you only intend to use your smart phone for calls, you may want to visit this page to check on plans available. There are plans shown there that has 0 data use. If you need more information about the plan, you can always click on “view details” or “go to site”.
Cheers,
Joanne