I had to unlock my phone and what you do is ring up your current provider and they will give you a code to put in to your phone which will unlock it from the provider and then you can use any sim card from any provider in the phone.
Phone Telstra...
My first mobile prepaid Telstra phone how do I activate the sim
No - the phone is the item unlocked - not the SIM card. If you were to replace the Optus SIM card with (for example) a T-mobile SIM - it would register to T-mobile. You could swap the SIM card back with the Optus card, and still use it.
Don't acivate the sim card it came with (which is the boost one). keep it locked ring the boost company, and exlplain to them or talk to the person who u brought it off i hoped this helped!! :)
Optus
No you can't, it makes you put in a password and it may damage your phone.
It depends weather your with Optus, Telstra... I am with Optus so you call Customer Service the Optus number is 1300 555 002.
take out the sim and type in #*7337# put the sim back in and youre done
Yes, as long as you have a SIM Card to swap in to avoid roaming charges.
No you cannot. Once a SIM card has been deactivated by the sercide provider it is no longer any good and can never be activated again. The only thing you can do with it is use it to transfer your contacts to a new SIM card with a card reader at your service provider's store.
Yes, you can because Boost Mobile is locked to the Optus Network.
To change the sim card on your iPhone simply open it at the back remove the battery and replace your sim card.
The settings of your HTC Wildfire will not change when you remove the SIM card, but you may lose your contacts.
it depends on weather its the phone that is locked or if the sim card is locked. if its the sim card then you need to call telstra and they can unlock it for you. but if its only the phone then the sim card will always work on any other phone