Replacing current iphone with a new one. Backup / Restore Questions etc
Hi,
Im sure these questions have been answered before but I would be most grateful for any quick answers please.
So I have been offered a new iPhone from my provider to replace my current one and I am thinking that I will most probably accept the offer. With that in mind do I just need to backup my iphone onto iTunes and then when I boot up the new iphone for the first time select the 'restore iphone option' to ensure the same things I have on my current iphone will appear on my new one? Assuming this is correct does iTunes also backup apps?
In terms of my sim card I assume it is just my phone contacts (names and numbers etc) that are stored on there or are those details stored on my phone in which case what details would be on the sim card? Again is it just a case of swapping the sim card from one phone to the other?
Finally if I want to then trade, sell or pass on my current iphone how do I do that securely? Does a factory reset remove all of the current data completely from it and if so how do I actually go about doing a factory reset?
Thanks very much for reading this and for any answers provided!
iPhone 4, iOS 6.1.3