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
Yes except for verizion iphones. iphone 4 have a small hole on the side use a paper clip to insert in the hole and the card will pop out. Other iphones have it on the top near the power button. Again use a paper clip to insert into the hole.
yes you can, you dont have to buy a new simcard when you buy a new iPhone
The Apple iPhone is generally locked to the phone company selling them. You cannot swap SIM cards.
Not on the iphone 4 in germany. with out a simcard the app does not work.
NO. It's just like jail breaking an iPod. Simple and easy if you know how to do it and have access to a computer.
You can't
If your 3GS is locked, you can't insert a SIM card.
no
If the Nokia phone is already unlocked, then it should be able to support the frequency that 3 network operates on, hence you can insert a 3 network SIM card.
A standard sim, so no microsim like with the iphone 4. Just see if your device is not carrier locked, in that case you need a simcard from that specific carrier
SIMCARD