Isimple Isbt21 Bluetooth Add-On Module for Iphone Review

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(More customer reviews)I had already installed the PXAMG interface to allow me to plug my iPod into the car's audio system.
When the factory Acura Bluetooth Handsfreelink transceiver failed and I could no longer make or answer my iPhone 4 handsfree (without spending $700 at the dealer!) I installed this ISBT21 Bluetooth interface, hoping for the best.
Pros:
- excellent audio quality for streaming Bluetooth content from the iPhone 4 to the 2005 TL's (non-navi) factory radio
* the "2" key on the radio becomes the pause/play button
* the buttons on the steering wheel control next/previous track selection
- easy install:
* a DIN plug easily inserts into an existing socket on the PXAMG
* An external mic plugs into the ISBT21 that allows you to do voice commanded phone calls using the iPhone's voice recognition
- accesses all phone numbers on the phone (as opposed to Acura's Handsfreelink system that makes you "teach" the car each number manually...a real pain.)
Cons:
- Incoming phone audio is way, WAY too loud and distorted. A note says to control incoming phone audio via the volume buttons on the phone. So if you are listening to the streaming content at a given volume and you make a phone call or somebody calls you, it's really annoying. You have to turn the radio's volume control down immediately and a lot to get it down to a reasonable volume. But the phone voice quality is still distorted. It's like the ISBT21 is not matching the impedance or something. Almost like jamming line level into a mic level input.
- Menu is dicey
* When you want to adjust the outgoing mic volume or the incoming speaker volume, you press button 6 (supposedly) to display the menu. It may or may not do this. And the generic instructions that come with the unit simply don't reflect how my radio looks. Buttons they call out don't even exist on my radio. Bottom line: it's very clumsy to adjust the Settings.
- Fails to connect often
* I get into the car and fire it up and it may or may not find my phone. I have to call up the phone's Settings/General/Bluetooth and click on the "PhoneKit" to get it to connect. This is after you have initially paired the unit, which is easy enough.
- Can't recognize my voice command that well
I really, really wanted this to work. I'm sorry to say it's not there. My Panasonic DEH-7100BT aftermarket radio is terrific.
No matter what I have done, I can't make the ISBT21's phone work to perfection. It's almost a deal breaker. But I like the streaming music/podcast capability a lot.

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