Does iPhone display non-iOS bluetooth devices nearby? Or, does it show iOS + devices that are in the "Made for iPod" program? Or even, does it show all devices just that you can't connect to devices that are not in the "Made for iPod" program? So can a phone actually see non-iOS, non-Made-for-iPod bluetooth devices?
Thanks
Yes iOS (iPhone) devices can discover and will show all (iOS and non iOS) devices near by that are discoverable. iOS devices will also pair and connect / interwork with all devices (non iOS also) that supports the corresponding profiles that iOS supports - example Headsets for Voice , stereo music, Bluetooth wireless key boards, mice etc. Here is the list of supported profiles by iOS devices - http://support.apple.com/kb/ht3647
MFi (Made for iPhone / iPad / iPod) is specific only for accessories connecting to iOS devices via bluetooth but not using standard profiles. (Either because the standard profiles does not allow the use case or because it uses a generic profile like SPP to communicate to the accessory specific application on the iOS device)