Currently Being ModeratedNov 20, 2012 9:40 PM (in response to winodog)
Got the answer myself. Apple Store techie said that the newer Bluetooth pairing is more secure than the older technology and less susceptible to hacking than before. Unfortunately, there is no way to make the iPhone undiscoverable w/o turning Bluetooth off. Users must either leave Bluetooth turned on or off. There is no "On" and undiscoverable. If on and not paired w/ a Bluetooth device, the iPhone is constantly seeking Bluetooth devices, sucking battery power. My phone is paired w/ my car, so it appears that I will need to turn Bluetooth on prior to driving and off when leaving the car. What a pain!. This was never a problem w/my Nokia and Samsung phones. How primitive! This is Cell Phone 101 and should be simple to for Apple include in iOS upgrades, unless the technology is owned by one of Apple's competitors.
Currently Being ModeratedFeb 24, 2013 10:14 PM (in response to winodog)
You're incorrect: the iPhone is only discoverable while you are in Settings->Bluetooth with Bluetooth turned on. As soon as you close the Settings, the phone stops being discoverable.
Currently Being ModeratedFeb 26, 2013 2:20 PM (in response to TomDM)
I don't think this is correct. My iPhone, when paired with my car and with settings closed, picks up mobile bluetooth marketing requests when I drive past somewhere that is broadcasting them. My phone must be discoverable for this to happen
Currently Being ModeratedSep 7, 2013 11:34 AM (in response to Nuthall1862)
I agree that you phone is discoverable. I just enabled bluetooth on the iphone 5 in settings. I closed the setting page and returned to the home screen. I powered up my kindle and walla it shows the iphone. If i tell the kindle to pair it the kindle says make sure the the iphone is showing this xxxxxx passkey. If i tell it to pair the kindle displays "unable to pair because of incorrect passkey or pin. it looks like the bluetooth is always broadcasting when its enabled. I don't see how your bluetooth can receive marketing requests if it hasn't been paird. maybe there coming in on google or some other enabled location based service.