inputs.text: user interface wonky blueant s4 works fairly well - ive used blueant supertooth ii several years found quite useful noise canceling feature works well lower lever containing microphone turn easy remember turn reach destination doesnt link automatically aging nokia n73 requiring fussing get car also found hard get answer call pressing \\answer call\\ button supertooth often doesnt work dive shirt pocket grab phone press \\answer\\ button not great way avoid unnecessary distractions drivingby contrast blueant s4 newer sleeker sexier user interface weird intermittentill start good parts voice quality excellent phone easy hear road noise canceling works well caller hears voice clearly easy check battery level unit smaller better looking supertooth s4 number features commands havent used part many require \\smart phone\\there problems first onoff switch side unit isnt easy find fingers turning unit requires fumbling biggest problem forgetting turn leave car took reprogram remember sonext accessing controls involves touching unit edge facing driver controls inconsistent dont always work well no buttons touch right spot answering call requires tapping center front edge havent always able get work decline call tapping area twice tricky answer call first tap doesnt often pocket diving answer phoneturning volume means swiping finger right left left right respectively tapping center section phone idle no calls turns voice commands found useful mostly check battery level theres little green blinking led phone voice command mode radio become confuseda flashing little blue led tells unit not bright turn leds voice commandif phone allows use s4 dial voice far havent taken time nokia means sitting car going phones menu system link numbers spoken names use s4 microphone otherwise phone wont recognize input suspect might work better smarter phonethe final annoyance battery level low phone announces fact loud voice every minute thats incredibly annoying theres no way turn short recharging phone also unit comes car charger plugs cigarette lighter 10\\ usb cable topping battery ac charger optional extra suspect charger miniusb plug trickdespite inconsistent interface like s4 recommend think lot convenient earpiece harder misplace sound works well easy occupants car join conversationupdate 123011ive used blueant s4 year several new annoyances turned ive settled pattern use works well mewhen s4 hears something news radio confuses typically decides want wipe s4s memory download entire phone book cell phone bad takes ten minutes often screws disablingthe s4 keep voice response calls \\batterysaving mode\\ works pretty well dont charge two months easily confused ive not found s4 voice command system useful except check battery leveli turn im not car onoff switch cheap threeposition sliding switch minimal detent middle \\batterysaving\\ position hard find right position turning s4 often struggleive discovered waze fantastic free navigation app android phone greatly prefer google navigate terrific job spotting inevitable los angeles traffic jams suggesting alternative routes found gooseneck phone holder frys mounts dashboard holds phone see windshield way easy answer phone right front meif allow answer phone s4 ignores caller id information tediously announces entire 10digit phone number one digit time slow second respond call times lost phone right front answering finger easy quick id love option s4 answer calls automatically announce caller id sohave charge two months easily confused ive not found s4 voice command system useful except check battery level turn im not car onoff switch cheap threeposition sliding switch minimal detent middle \\batterysaving\\ position hard find right position turning s4 often struggle ive discovered waze fantastic free navigation app android phone greatly prefer google navigate terrific job spotting inevitable los angeles traffic jams suggesting alternative routes found gooseneck phone holder frys mounts dashboard holds phone see windshield way easy answer phone right front allow answer phone s4 ignores caller id information tediously announces entire 10digit phone number one digit time slow second respond call times lost phone right front answering finger easy quick id love option s4 answer calls automatically announce caller id