can you put an optus sim card in a sony ericsson t715?

i have a sony ericsson t715 phone and it is ment for a 3 sim card and all my friends are with optus is it possible to put an optus sim card in my phone??

HI no you can't use optus sim in Sony Ericsson T715 mobile until you unlock it from 3 network ..You can easily unlock it using sites like Theunlockspot.com here they are rendering unlock code for all mobile models at reliable cost ..After unlocking your phone you can freely use it with any GSM sim ...