Headphones model:	Plantronics Pulsar 590	Jabra Halo	Altec Lansing BackBeat 903/906	Gear4 BluPhones	Motorola HT820 (model D)
A2DP iPhone 3GS 4.1	everything works except resuming – it fully refuses working. That is, you need to resume playback on the phone everytime you pause it from the headphones. On Voice Control-enabled platforms (iPhone 3GS / 4), the command „Play” works if you don't want to take out your phone.	OK	OK	OK	OK
iPhone 3GS 4.2b1	Same	OK	OK	OK	OK
iPhone 3G 3.1.3	the same except you can't use Voice Control for resuming	OK	OK	OK	OK
iPod Touch 2G 8GB 4.1	See 3GS; no way to restart at all (no Voice Control)	OK	OK	OK	OK
iPad 3.2.2	See 3G; no way to restart at all (no Voice Control)	Almost entirely useless: nothing works (volume setting (!), pause, nothing) – only streaming at a pretty low volume / same	OK	OK	OK
iPad 4.2b1	See 3GS; no way to restart at all (no Voice Control)	See 3.2.2	Useless: audio stops after about 2-3 seconds	OK	OK
Phone: Call initiate: 3GS 4.1	+ (upper button double-press)	- (!)	n/t	- (not even after reboot)	-
3GS 4.2b1	+ (same)	+ (double press)	+ (left center button double-press)	- (same)	-
3G 3.1.3	+ (same)	+ (double press)	+ (same as 4.2)	- (same)	+ (left button longish-press)
Call answer: iPhone 3GS 4.1	+ (upper button single-press)	- (no way of answering calls or even routing sound)	n/t	+ (short main button press)	+ (left button short press)
iPhone 3GS 4.2b1	+ (same)	+ (single button press)	+ (left center button single-press)	+	+ (left button)
iPhone 3G 3.1.3	+ (same)	+ (single button press)	+ (same as 4.2)	+	+ (left button)
Voice control: 3GS 4.1	+ (upper button long-press)	-	n/t	Partial (only after restarting the headphones, not while streaming via A2DP)	+ (left large button)
3GS 4.2b1	+ (same)	-	+ (left center button long-press)	Partial (same)	+ (left large button)