Wanted to get construction from those who have upgraded formerly from aged to latest iPhones.  When I get my latest iPhone, my acknowledgment email says to turn on the phone on an AT&T website. I pretence I’d afterwards need to setup the phone in iTunes, and revive from the final behind up of my 3GS.  BUT, if I turn on with AT&T + on iTunes, what will occur to my aged phone? Can I still operate to it erase the settings prior to giving it to someone else? Is there any disproportion in between clicking on the “Erase All Content and Settings” on the aged phone vs. you do a “Restore” on iTunes? Is it probable to do the “Restore” on iTunes after I’ve setup my latest phone?  Â