OK... so I got back my old Iphone 4 after it took a trip to the US to get refurbished. I have since put another Iphone in operation, having of course migrated my Apple ID along with all my paid applications over to this new device (an Iphone 5). So then... I want to get this Iphone 4 back in normal operation with another SIM card and another Apple ID. My question is... for all the paid applications that I have purchased, can I install these apps on more than one Iphone or are the App Store licenses valid for only 1 device...?