If you're an iPhone user and the SIM card is locked, here are the steps to help you unlock it.
Contact the carrier. If you have another phone, try to make a call to the carrier's customer service. If your carrier has a website, also get in touch with customer support via the live chat on their website.
Get PUK Code to unlock. You should ask for the PUK code after getting in touch with customer service. The code is 8 digits and you'll have 10 attempts to input it.
By the way, if your iPhone shows "SIM not valid" or "SIM not supported, then try to deal with the problems a computer program called iMyFone iBypasser.
If your 3GS is locked, you can't insert a SIM card.
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.
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
No as they may be locked to a particular handset but if they are not you can move the SIM card to an other handset. Nokia do not have their own SIM cards they just lock the SIM card to their network via the SIM card settings.
It sounds like your phone is locked to a specific network (not the network for your SIM card). You might need to get it unlocked before you can use the SIM you have.
Yes it does but it is locked to t-mobile America
If you are getting Invalid SIM or Incorrect SIM when you insert a SIM card from a GSM provider, then it would mean that the Blackberry phone is still locked to the original carrier. You would need to unlock it first.
There should be no problem if you use a SIM card in an unlocked phone. If the phone is locked make sure the network is available to you.
yes you can if ur iphone is unlocked you may have a choice of any sort of simcard but if its locked you can only have that type of simcard
A SIM is not "locked to a phone" -- the phone is locked to use only SIMs for a specific network. In other words, any SIM will work in any unlocked phone. A locked phone will work with any SIM from the network it is locked to. Changing the IMEI (which is rumoured to be possible, but I am not sure) wouldn't make any difference -- if the phone is unlocked, you can already use any SIM in it.
If you've locked your SIM card (by entering your code wrongly) - you need to contact your network provider on another phone - and ask them for your phone unlock key (PUK).
Only if the phone is not locked to t-mobile.