Seeing as how the iPhone 4 requires a micro-SIM you will have to either get a new micro-SIM from Vodafone; cut your SIM down to a micro-SIM; or purchase a dual SIM adapter that will allow you to use your full size SIM in it. I have included Related Links for the last two options as they include pictures that you may need to be able to make an informed decision as to which route you want to take.
No, but you can sell your iPod for iPhone money.
The Apple iPhone is generally locked to the phone company selling them. You cannot swap SIM cards.
Yes
The only way - would be to swap SIM cards. However - that would need the flip phone to be able to accept the iPhone's SIM card.
Yes, as long as you have a SIM Card to swap in to avoid roaming charges.
When you switch from iPhone 4S to Samsung Galaxy S5, would you transfer all data from your old iphone to Samsung? It's surely you need to do that. See related link for a video for that, it's easy to use.
I don't know about the years in questions, but in regards to a straight swap, the answer is no. Since you are going from Auto to Manual, you also have to swap the tranny.
None. It is possible to operate Linux without a swap file or partition.
You can swap two integers without temporary storage by bitwise exclusive-or'ing them in a specific sequence...a ^= b;b ^= a;a ^= b;
Yes, as long as you swap out the SIM Card or put it on airplane mode so you avoid roaming charges.
To swap two variables without using a third variable, use exclusive or manipulation... a ^= b; b ^= a; a ^= b;
Yes you can