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No.
You have to put in the SIM-card and plug it into the PC. Then just slide the activation bar.
yes
no
you can, but only with an iTunes gift card
No, the sim card is located in the top of the phone only.
You cannot upgrade the pixel shader without buying a new graphics card. Usually, this is not possible on a laptop without buying a completely new one.
Then just get an iPod touch ..
Im not sure but i think you have to jailbreak it
Depend on your activity, for office it's not recommended to upgrade, but for gaming, and furthermore a recent released games, you need to upgrade to mainstream graphic card to play it without a glitch.
Yes you can - this applies to Desktop computers however - laptops usually use an on-board graphics card - the manufacturer will usually offer an upgrade service
Only if the iphone is a GSM phone with a SIM card... Otherwise if it is CDMA then no, you have to activate the other iphone.