Australia has 3 major mobile networks - Telstra, Optus, and Vodafone. All are 3G-GSM carriers.
Telstra has the biggest range, but is the most expensive. If you're going into rural areas, Telstra is your best bet.
Optus is a good compromise between range and price. They cover all of the cities, but there are many more gaps in coverage compared to Telstra's network.
Vodafone isn't really a major player, although their network is only slightly smaller than Optus's.
There is also Three and Virgin Mobile.
wireless networks accesible from your mobile phone
When you get a new phone go into a network store and get the networks sim for your phone.
Nowadays most mobile phone networks will offer you at least 3 phone options. Some of the most familiar networks that offer 3 or more phone options are Sprint, AT&T, Virgin Mobil among others.
1987 Telstra introduces the first mobile phone network to Australia - the AMPS or Analogue Mobile Phone System ( telstra.com ).
only by paying to unlock the phone to all networks
No. The networks used by T-Mobile and Sprint are incompatible. You can, however, keep your same phone number in lots of cases.
Vodafone
There is no 3 mobile operator in Australia. In fact, there is no area code in Australia. All cell phone calls seem to all be local and not have any mobile operator.
No - usually the mobile networks will do all the 'hard work' for you.
they are 3 mobile networks. Mascom, Orange and Be mobile
T-mobile in usa amd vodafone in Europe and Australia
To call an Australian mobile phone, you dial the Australian mobile number. It does not matter if the mobile phone is physically in Australia, Honolulu, or anywhere else.