(1)How many percent of people use Telstra, Optus and Vodafone?(2)Which one has the best signal?(3)If you don’t need to stay here for a long time, but your call rate is expensive, you must need a cheaper prepaid deal.Prepaid deal (only compare with Telstra, Optus and Vodafone)(4)If you need ...

Telstra, Optus and Vodafone which is the most favorite of people ? Is there any data or picture can show me?