Database Users

XDA II for Car Audio

Hey,
I have a question regarding the XDA II.
When I'm getting the device I would like to get it connected in my car.
Is it possible to connect the XDA II to an amplifier and play my mp3's?
I know there are a few amplifiers out there that can be connected with a "walkman" jack.
If is possible could you put some pics online where I can check it out?
Thanks a lot!
Cheers
Panja

if you dont want to get a car tuner which neat jackconnectors
and you have a tape player in the car then
http://www.digitalnetworksna.com/shop/_templates/item_accessories.asp?model=69&cat=16
this one or one like it would work if you made or got a xda 2.5 to 3.5 converter

First of all: thanks for the amazing fast reply!! :-D
I don't have a tape player in my car... So this is not an option for me...
I can buy an amplifier that can be connected with a "walkman" jack.
I had one a long time ago, I connected my walkman to the amplifier.
So is there a cable that can be connected to the XDA II and the other side that has a "walkman" jack? (So I can put this in the amplifier)?
And will this work for the XDA II?
Cheers

http://www.expansys.com/product.asp?code=PPCPADPT01
xda1 and 2 have compatible connectors apart from the pickup phone buttons

w00t!!
That's what I'm looking for man!
Thanks again, going to order that one as soon as my XDA II is in my hands :-D

Does anyone in here own such a cable?
Just want to know if the quality is any good...
If it's worth the money.
The cable itself is not that expensive but I would have to buy an amplifier too.
Don't care about the money as long as it works great :-D
Cheers

Also I would like to know when connected with the cable does the microfone still work? (so when the cable is inserted)
Because I will be using MS Voice software...
Thanks

if it does disable the mic in the xda then this
http://pc-mobile.net/pxdaa.htm
would work it have a mic aswell and a 3.5mm connector
of cause then you would have to place it in a place where
it can recieve your voice
about sound quality then should not be much worse then the headset
it's just another connector with the jack 3.5mm
it's just analog you can compare it with how much the quality loss would be if a walkmen were connected the same way compared to connected to a headset

Thanks man!!
Just a question regarding the cable with mic.
If I will use it in the car with the sound (mp3) over my speakers won't that interfere with my microphone (with ms voice software)...?

Hi just thought this idea might help:
if you have a look around the net (i think Expansys.co.uk also do one) you can get a little radio module that plugs into a standard stereo jack, it transmits your audio to a special frequency that can be picked up by any FM radio nearby. Like you car radio if you have one.

I use my XDA II as an MP3 player in my car via Seidio's iSound wireless FM transmitter. The transmitter input plugs into the XDA2's headphone jack (I have a 2.5 to 3.5 mm adaptor) and then I tune my car stereo into the user definable frequency of the iSound transmitter. Works very well.
http://www.seidioonline.com/ProductDetails.asp?ProductCode=SFTF1

This sounds very very interesting guys!!
Thanks a lot.
This is a lot more userfriendly than putting an amplifer and stuff in.
I have a nice car audio so this is very neat!!
How is the sound quality?!
Cheers

So how is the sound quality?
Before I'm buying this one I would like to know if the sound quality is good.

I got the expansys adapter but it works very poorly for the XDAII dues to the unusual shape of the 2.5 socket on the XDAII. I have to fiddle with the plug to get it to work... very annoying.
Anyone found an adapter without this problem?

josephwaller said:
I got the expansys adapter but it works very poorly for the XDAII dues to the unusual shape of the 2.5 socket on the XDAII. I have to fiddle with the plug to get it to work... very annoying.
Anyone found an adapter without this problem?
Click to expand...
Click to collapse
Yes, with another adapter i had the same problem.
Buy on old Nokia 8110 headet, cut it below the mic and use the wires to solder a 3,5mm connector to it, On the nokia wire :
blue = Audio-L
Green = Audio-R
Red = Mic
Blanc = Ground
Good luck !

Possible Car Kit breakthrough!

I am 99% finished on developing a car kit for the XDAIIs. The plan is to make this available for all versions of XDA, MDA, SPV etc. when complete.
At the moment the kit will do the following
Power the XDA
Has got a microphone input.
Has got speaker output of voice through the car stereo speakers
Has got speaker output of navigation through the car speakers
Connects to a wired GPS antenna - currently using PS2 connector but I'll be making an RJ11 version on Monday!
All I need now is a way of signaling to the car kit that the XDA is in the holder! :x
From the car kit, I have 1 wire which needs to be connected to 5v to power on. I also have a 5v feed from the car kit so I could simply join the wires but thats not the point.
I would like to find either of the following options.
1 - 5v feed from the XDA when in the holder
2 - Using 2 pins on the XDA to feed 5v in and get 5v out on another pin.
I have also found that on an XDAII, there is a 5v feed on one pin when in a call, but there isn't anything out of an XDAIIs in the same situation. I just need 5v when the device is present in the holder.
If anyone can tell me if this is possible I would really appreciate it.
Regards
...Spence

In order to get the carkit to work, I think you had to ground the pin instead of putting 5V to it, as specified in this thread :
http://forum.xda-developers.com/viewtopic.php?t=4829&start=75
It would be great if you could post your circuit !
Where did you get a proper connector, or did you just modify a xda II connector ?
Ciaos,
Kristof

A modified Carcomm cradle?

THe XDA uses 3 pins for the +5 Volt charger. I believe these pins are shorted inside the XDA
If you charge through 2 of these pins you might be able to use third to recognize that the XDA is inserted

s93ncer said:
I have also found that on an XDAII, there is a 5v feed on one pin when in a call, ....
Click to expand...
Click to collapse
What pin is that that gives +5V when in a call on the XDAII?

What pin is that that gives +5V when in a call on the XDAII?
Click to expand...
Click to collapse
Pin 12 on an XDAII goes to a positive voltage when in a call.
One thing I did notice was that the voltage does just appear and disappear, it builds up and drops off over 2 seconds,
Regards
...Spence

Thanks for the info!
Is there any similar behaviour when ending a phone call
I suspect my XDAII/iMate carkit is triggered by this signal, I would like to manipulate it in order to have the carkit amplify the TomTom directions also.
Other question: what type of mic did you use? The XDAII has quite some problems with the mic input signal (resulting is bad sound quality)

The voltage builds up to about 5v when making a call and does drop off to 0 when you end the call. Also, I don't have any problems with sound quality (although this is in an office at the moment) with the microphone.
I am using a universal car kit that my company sells, just hacked the connector off the end and connected it to the XDAIIs connector.
Still having problems, but with the car kit now and not the XDA
Can't get it to switch on/off when the XDA is in the holder and taken out!
..Spence

Sounds like you've found out some good stuff Spence.
I'm working on a similar project at the moment, except I'm using a circuit that detects audio coming from the XDA's pins, which then switches a relay to ground.. this is connected to the car stereo which goes to "Telephone mode" when grounded. Its about half way done at the moment, so I'm not sure how sucessfull its going to be.. but I'm currently having trouble with the volume of the audio from the XDA, (I haven't tried a Mic on it yet)
Would be interested to know if the XDA1 also has 5v on Pin12 when in call.. as I could revert to this if my plan doesn't work, although it would mean loosing Tomtom prompts through the stereo
Keep us updated on your progress :wink:

The other added goodie that I can put into some vehicles is a thing called an intellimute - made and designed by my company!
Linked in with the stereo, it will mute the stereo when it senses audio not just when in a call hence the Nav audio as well.
This might be useful to you - but you will probably have to but one to try it out.
I don't have an XDAI to try anything with - plus most people who I have spoken to have a II or IIs
...Spence

@swifty: When Pin 19 - Car On - is connected to GND via a 10k resistor the XDA gets into 'carkit-mode' resulting in ALL audio to be sent via the bottom connector. This will help you feed the audio to your stereo.
Together with the Pin 12 behaviour (+5V when in call) one should be able to build a carkit circuit:
Connect the audio-out pins to the car-stereo audio in or -alternatively- a seperate amplifier.
Make your car stereo go into mute when Pin12 gets 'high'
BTW, I gues you checked the wiki pages:
http://wiki.xda-developers.com/index.php?pagename=Connectors
I would like to know what mic type is used by you guys, as I read in the other thread mentioned that this still might have issues.

Thanks Edsub,
Thats pretty much how i've got it hooked up at the moment, but I think there was a problem with the amplifier I was using as the audio from the stereo was very quiet. I've now changed the circuit and will be testing it out in the car tomorrow.

Spencer
What connector and cable are you using for this.
Thanks

What connector and cable are you using for this.
Click to expand...
Click to collapse
To cut a long story short, I had a couple of data cables for Ipaq's (3800 I think) lying around and I got a complete car kit from stock, cut the cable off at the phone cradle end and soldered on the connector from the Ipaq.
At the moment it looks a real mess, but it does work!
Haven't played with it for a few days, but might do some more today.
FYI, the problems at the moment are car kit related, not XDA - the XDA issues are solved.
...Spence

If you need an xda 1 and or the car kit to loan for your project, let me know.

I still have my iMate/XDA2 carkit (the one as sold by ie Expansys).
There still are two things I like to change:
1. Mic quality. I allready used a better mic (Nokia style gooseneck) with a thicker wire (as sugested by Expansys): Things did improve, but I still sound like I have a bag over my head (or like I am talking into a toilet bowl according to my collegue) . . .Any help greatly appreciated
2. Only the in-call audio is send to the carkit speaker. I would like to get all audio on the carkit speaker (so I get better amplified TomTom instructions). The car-audio mute only has to do its work when in a call (otherwise you wont be able to listen normally to a conversation or ie. the traffic info on the radio)..also: any clues???
A hint: In one of the other threads on this it is suggested that putting someting into the XDAII headset jack wil get all audio out, but that is not quite workable withou drilling the cradle to pieces.
Can anyone tell me what the effect on the bottom connector signals is when you insert something (ie an empty plug) in the headset jack?

Hi all.
Great topic. There's one thing I still don't know.
Does IN_CALL pin work in XDA 2s / MDA III ?
Mine XDA IIs doesn't put anything on IN_CALL pin when calling.

I have been having similar problems with audio with powered cradles/car kits. Just cannot get the damned audio to come out of the car kit, only call audio! (XDAIIi/Qtek 2020i)
http://forum.xda-developers.com/viewtopic.php?t=41716&highlight=
http://forum.xda-developers.com/viewtopic.php?t=45779&highlight=
http://forum.xda-developers.com/viewtopic.php?t=45462&highlight=

Suggestion
Why not simply have a mini contact switch in the bottom of the cradle to sense when the phone is in the cradle?, or use a simple current sensing circuit?
a VERY simple circuit would be a coil of the 5v feed and a reed switch, when current is being drawn through the coil it will generate a weak magnetic field, which could be used to close the reed switch...
Simple yet effective...

Audio (MP3) through original Dockingstation. HELP!

Hi,
I'm only 13 and a proud owner of an O2 XDA 2.
This I what I need help with.
I would like to place my USB docking station on top of my subwoofer, and connect my XDA with it (only for audio purposes only).
I've read some of the forums here, but didn't find much info. :?
Could someone tell me which pins, on the connector, on the dockingstation send the sound? I would like to add 2 cinch cables to these pins, and attach them to my subwoofer (to kind of make my XDA like an Ipod or another MP3 player, where I simply stick it into my dockingstation and start playing MP3s through my sound system).
Thanks,
Kind Regards,
Tony Schattat

Hi mate.
Note sure you could connect the XDA directly to a speaker as I doubt it would have the required power output (but I don't know much about this, just being logical).
Take a look at the following thread: http://forum.xda-developers.com/viewtopic.php?t=26489&highlight=
This guy has basically modified the headset to have a 3.5mm jack - I've then suggested (and intend on doing this) that you could put 2 standard audio outputs instead.
On reflection though, I think his suggestion may be better as it reduces the number of leads. If you then needed to split the sound out to 2 seperate channels you could use something like this:
http://www.maplin.co.uk/Module.aspx?ModuleNo=43086&doy=3m9
Cheers
Wayne

Hi Wayne,
Thanks for your reply.
I would rather like to have a solution which is built in my dockingstation.
With alot of precision I was able to do the following.
1. Used http://wiki.xda-developers.com/wiki/Connectors for details.
2. On pin 19 on the dockingstation I placed a 10K SMD resistor (as the standard ones are too big), connected to GND, as stated in the text.
3. Using a double cinch cable I soldered them onto pins 3 (CAR_AUDIO_R) and 4 (CAR_AUDIO_L), and both GND wires to GND.
But nothing seems to work.
I used the ohm-metre to check if the 10K resistance even came up to pin 19 of the dockingstation. I does. Unfortunately the XDA doesn't turn off it's built-in speaker and microphone, as stated in the text.
This basically simulates a car-kit for the XDA, doesn't it?
Kind regards,
Tony Schattat

Audio playback
Hiya!
Well if yer are 13 then it seems UK Schools are way behind German ones if they're teaching you about using Ohm Meters, Resistors and electronic theory already!
Ok, overall to me this whole precision soldering and resistor checking etc is all overkill for what you ultimately seem to want to achieve.
I've just bought off eBay the little 2.5 mm to 3.5mm standard headphone jack converter lead for about £2.50. I'm going to go nip into a shop or again off eBay and get a 3.5mm stereo to 2 phono plug convertor lead.
Simple case of then slapping that into the Aux input of my Hi-Fi amplifier, or my mini deck hifi etc and playing the mp3's through that!
No need for faffing around with soldering irons, and electronic theory and all that!
Added benefit is of course that through the hifi unit, I have full control over the audio equaliser functions and so will have the full spectrum of audio frequencies to hear the music - Your requirements states you just want to connect it to a subwoofer. Low frequencies are great, but you do need the upper frequencies too!
That will all set you back the grand total of about £5, and i've assumed you do have some audio equipment with an Aux input!
For 'constant' playback, when yer battery gets flat,... just plug the charger in!
Another benefit is that you can take the leads with you on your travels and setup the same at any of your friends houses with minimal effort!
I don't see the point of the route you are wishing to take - unless I'm missing something (I got in at 7am this morning after clubbing and up at midday, so im knackered!)
Cheers!
Hope this helps!
Dennis! West London UK!

Hi Dennis,
Well the schools here aren't all that far ahead ( I think, because I`ve lived in Australia for 6 years)!
It runs in the family!
I was able to find some handy info on some dockingstations on google, but I'm not very sure.
Is it true that the serial dockingstations have an audio connector on the rear side, opposite of the power connector?
Is the audio connector on the dockingstation the same thing as the one, which is found at the bottom of the XDA (would it disable the built in mic and speaker of the XDA and send the audio through connector on the back)?
If this is true, could I simply attach a 2,5mm to 3,5mm converter to the back of the dockingstation and attach the converter to my subwoofer?
Kind regards,
Tony Schattat

Audio playback
Hi there Tony
I'm still not sure exactly why you want to connect your USB cradle to play music through.... seems pointless to me..
The method I described would be the easiest for you to 'amplify' the audio output from the XDA2.
I may be wrong but I dont think the USB cradles have an 'audio output' connector at the back, it's a bit pointless as these devices aren't devised as 'audio players' - so no, you cannot put the 2.5 to 3.5 mm converter on and then connect that to your subwoofer (signal is wayyy wayyy too small to drive a sub woofer) if there is an audio output at trhe back of the usb cradle, then I never knew about it!! and same again, you cannot connect directly to a sub woofer.
Out of the socket at the bottom of the xda2 in a 2.5mm size, is an audio jack. Get the converter to take that 2.5 mm and output it to a standard 3.5mm headphone socket size. Right, at this stage you can connect 'Hifi' headphones and enjoy your MP3's that way. If you now want your music 'louder' you need to convert that (now) 3.5mm output to be able to connect it to some audio equipment that can 'amplify' the signal and play through some loudspeakers (the 3.5mm socket to Phono converter lead). That will go to your hifi amplifier in turn to which 'full range'loudspeakers are connected. You mention 'sub woofer' .. You could then attach your sub woofer to the amplifier and you will only hear the low 'rumble' of the bass frequency content of the music (again, a bit pointless!). If that's what you want then at this point all will work but then what's your plan for hearing the mid range and high frequency elements of the music?
I'm just thinking that for your final 'aim' (to hear MP3 files on the xda through loudspeakers) the method you are using is cumbersome, time consuming and pointless when you can have a 'full range' output using the method I described.
Take a look at eBay for the connectors - and you'll find you should be hearing music in no time!
Cheers! Dennis! West London UK!

Sound from 3.5" jack and HTC usb ??

I'm curious to know if sound will be passed to the HTC USB aswell as the 3.5" jack ?
I use the E100 adapter all the time as its nice and simple to skip a track and make/answer a call when out and about.
Dont fancy pulling out the HD to skip a track or answer a call all the time
Nogs

**Bump**
Nobody has any idea ?

I don't the answer to your question, but the answer to your problem is bluetooth. My headphones change volume, track, play/pause and answer the phone. Music resumes after the call. This is using Motorola S805 headphones, WM6 and Mortplayer.

Sound is via jack only, but indeed Bluetooth is a great solution.

Cheers for your replies....
Nogs

Lucas0511 said:
Sound is via jack only, but indeed Bluetooth is a great solution.
Click to expand...
Click to collapse
Doesn't the mini USB port need to support sound in order for a wired hands-free headset to work? I'd be really surprised if they a) required a bluetooth headset for hands-free or b) required two jacks (3.5mm and miniUSB) in order to use wired hands-free headset.
If the 3.5 jack has more contacts than just the normal stereo then maybe they have a wired headset that works just from the 3.5mm. It will be interesting to see how they've done it.

It is confusing to me, since the few previewers reported a dedicated audio jack and USB only for charging/data (ActiveSync). HTC in their 16/9 press release do mention the audio jack in the press release, but in the feature list it is not quoted, but there is mention of ExtUSB, but no mention of audio on it. On other HTC press releases for previous models ExtUSB is usually mentioned with audio next to it. Well I guess it is wait and see
Update: This French review in English also says audio jack also for handsfree http://www.youtube.com/watch?v=Aiw5PsQ50Uc

Check the review on GSMArena - the headset works off the audio jack, so no need to have audio via ExtUSB...

Mmm The Earphones supplied are 4 pole, Earth, Mic, Left and Right.
So disapointed if the Ext USB doest carry sound too... Will make the whole Car mount job look untidy but worst is that you will have to take your HD out of your pocket to skip tracks when using the headset... Sorry thats just pants !!!
Nogs

nogs said:
Mmm The Earphones supplied are 4 pole, Earth, Mic, Left and Right.
So disapointed if the Ext USB doest carry sound too... Will make the whole Car mount job look untidy but worst is that you will have to take your HD out of your pocket to skip tracks when using the headset... Sorry thats just pants !!!
Nogs
Click to expand...
Click to collapse
what happens on the iphone? or itouch? in this instance.

nogs said:
Mmm The Earphones supplied are 4 pole, Earth, Mic, Left and Right.
So disapointed if the Ext USB doest carry sound too... Will make the whole Car mount job look untidy but worst is that you will have to take your HD out of your pocket to skip tracks when using the headset... Sorry thats just pants !!!
Nogs
Click to expand...
Click to collapse
Re in car intergration and control, I like this gadget very much.
http://us.kensington.com/html/14484.html
LiquidAUX™ Bluetooth® Car Kit
It comes with a separate wireless remote control that you can mount anywhere in your car, and the sound outputs via 3.5mm jack, so you can connect it easily to your stereo. In addition it auto-connects very well, meaning its really plug and play. It also comes with a separate USB port for charging, meaning you can still charge your phone via USB while this occupies the cigarette lighter.
Surur

Sorry to bring this back up but are we totally sure that the mini usb doesn't carry audio? I haven't been able to get it to work on my car hands free kit but maybe i'm missing something??
If it doesn't i think HTC have misssed a trick.

I've tried with a couple of audio headsets, always says "not supported, disconnect".

rickgillyon said:
I've tried with a couple of audio headsets, always says "not supported, disconnect".
Click to expand...
Click to collapse
Thats the same message i get, what a shame!
Is this a hardware issue or software? If software we should be able to do so,ething about it?

[Q] Head phones with mic

Hey people. Thanks for all info, been reading about the defy here for some time. Got one now and I love it. I had a few smartphones before and this is by far the one I would stick to forever if I had to.
So, my question is: Are there any good head phones (in-ear plugs, with mic and maybe even music controlers) avaliable, and that I can be certain to be compatible with the Defy? Or could I just buy any that works fine with other Android or Motorola devices? Motorola is not sold in Sweden where I live, so it's not like I can check out any stores IRL here...
With my Xperia x20 mini, exacly what I described came along with the phone. Too bad that you just got these normal plugs with the defy. Cos there is just no way I would use those. As of now I stick to my old head phones but I'd love the mic function with my In-ear plugs.
Thanks for any help!
Ekholm
Ok, so I found this site:
thinkmotoroladefy.com/wiredheadsets.html
and it's all looking good, except for the part that they are a bit low-priced. I'm looking for high quality ones. I.e my current head phones was about 90 USD.

For information, iphone handsfree works fine

Thanks!
By chance, does anyone know if "Klipsch Image S4i" would work? they seams to be perfect! Volume, track fwd bwd and play...

I got one of these a few months ago, works fine with my HTC Desire. Not the best headphones in the world, but more than capable of handling a bus ride. You can unplug the headphones, clip on a small plastic hook and use it as an in-ear Bluetooth headset too. Two birds with one stone
I can get around 10 hours out of them between charges.

Thanks, it seams to be mono, right? Mono doesnt sound too thrilling...

If you use power amp you can set it up to use the controls on headphones to start and stop music, instead of calling the last number you called. It will work on the lock screen too.
This was the only way of getting it to work i found for the defy and i tried about 10 different headphones with in-line controls. Bluetooth stereo sets like the one above with controls seem to work fine for music however, ive got a sony bluetooth set and the controls worked right away on the standard media player.

cthulhu501 said:
For information, iphone handsfree works fine
Click to expand...
Click to collapse
Really? i got philips iphone headset with remote and there is a constant background noise, probably caused by the remote. which headset are you using?
the one that came with my phone has no remote!
Sent from my MB525 using XDA App

i'm using now my new wesc bongo with handsfree, and they do work great!

Hi everybody I'm new,
Does anyone can confirm this pinout for Defy's jack 3.5mm?
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Ground
4. Sleeve - Mic
or this used in most mobiles:
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Mic
4. Sleeve - Ground

I use Razer Moray+™ they have no remote function so you have to answer the call on the phone. But you have a mic and the work good for musik and phone calls.

anyone got an update for this, still looking for ear buds with a mic.

Klipsch Pro Media set(based on the S4i but a bit better build for traveling etc).
Awesome set up with defy. The S5i rugged set is also great as they are moisture proof and very overbuilt.

Hulkanator said:
anyone got an update for this, still looking for ear buds with a mic.
Click to expand...
Click to collapse
I use nokia's Bh214 . Works pretty well!

bether said:
Hi everybody I'm new,
Does anyone can confirm this pinout for Defy's jack 3.5mm?
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Ground
4. Sleeve - Mic
or this used in most mobiles:
1. Tip - Left audio
2. Ring - Right audio
3. Ring - Mic
4. Sleeve - Ground
Click to expand...
Click to collapse
Openend up the original Motorola Defy headset and found this:
farm6.static.flickr.com/5256/5451992356_6e55ae0fce.jpg
flickr.com/photos/kikus/5451992356/
(I can not post any outside links because I am a new user )
1. Tip - L
2. Ring - R
3. Ring - M-
4. Ring - M+
(measured with a multimeter - hope this helps)

Thx,
Yeah, exactly as you wrote.
I remade cheap handset with remote (from eg. www.ebay.com).
It works with any headphones

I used my original headset on a iphone before. So I assume that every headset that works on the iphone should also work on the defy.
Sent from my MB525 using XDA App

I wonder if Sony Ericsson's headsets work. These seem pretty good:
goo.gl/TquJQ
goo.gl/eQc9W
Would be good if they work.
BTW, I tried Samsung Galaxy SL's Stereo In ear handsfree and the sound quality was just awesome! Might get myself one of those!!

I've tried the iPhone standard headphones and sound works but Mic and controls don't. There is a pair of sennheiser mm50 Nokia. Which will work fine. Ordering one shortly.

Hi
I can confirm that at least not all iphone headset work the defy, even if the pinout is identical. I tried the Sennheiser MM70i and they don't work!
I soldered the mic of the standard Headset to the MM70 and now im happy,
but definitely nothing i can recommend
greetings

Killigrew said:
Hi
I can confirm that at least not all iphone headset work the defy, even if the pinout is identical. I tried the Sennheiser MM70i and they don't work!
I soldered the mic of the standard Headset to the MM70 and now im happy,
but definitely nothing i can recommend
greetings
Click to expand...
Click to collapse
yes u are right
I have try headphones
wich have microphone
from an alcatel.
no sound
if I push deeper
into the phone
the plug then it
start to hear random
in both speakers
so the pin is longer
or shorter on moto
Sent from my MB525 using XDA App