Develop Bugs

O2 XDA -----> XDA2 Connector Difference???

Hi all, hoping somebody can tell me if here is a difference in the connectors at the bottom of these 2 phones??? The reason I ask is because I have come into possession of a Professional GPS Carkit for a XDA2 whic I have modified cosmeticly to accomodate the XDA. All parts other than sound and microphone are working. I would appreciate any guidance some of those in the know would be forthcoming with.........I have put my phone back to standard with the rom etc to be sure the upgrading of it had no adverse affect, so it is exactly as I bought it now, and still doesn't work properly

Check the wiki for the connector pinouts to confirm they are the same. They only device using a slightly different 22 pin connector is the blueangel with two ridges in the sleeve.
Richard

my xda1 got stolen and i could use both the cradle (xda1 cradle is soooo much better then xda2's)
and charger connector (of cause)
and headset

ok......a little progress nowhere really but, anyone got ideas on this........I pulled the control panel apart on the car kit, i have found that if i put the phone in the cradle whilst on a call and the sound comes through the speaker when it beeps to say it is in the cradle???? Upon checking it further, the control panel clicks, i presume that it 'opens' the connection to the speaker, but will close the connection and not reopen it if i make a call from the cradle tus rendering the speaker an the mic inoperative. I have found that the 'car on' wire appears to go through a resistor once on the board so could this be cutting down the input too much for the signal from an xad1??? Anyone with some technical knowledge on this would be really helpful. Thanks in advance

adapter for sound *in*?

Hi all!
For sound out, there are adapters (I already have one), which convert from that custom 2.5" jack to a standard 3.5" - which even let the built in microphone active. OK.
But is there any adapter for the opposite? Converting the microphone / sound in part of that custom 2.5" to an e.g. 3.5" - so that some standard microphone or some other sound pickup could be attached?
Wether built in speaker would be left active or not isn't relevant for me.
Background: I have one of those programs for tuning musical instruments. It works fine with the built in mic in relatively silent rooms and for acoustic instruments. But imagine beeing on stage between two songs while the crowd is cheering!
If no such accessory is available: I would spend some extra Euros for a second hands free thing, cut off the side with the 2.5" plug and tinker a 3.5" on the open end.
But will this work - or have I to include some resistors or such?
Thanks, greetings
Manfred

There are such adapter on sales
http://www.expansys.com/product.asp?code=113967&tab=0
As for the issue of resister, I don't think you will be needing any. I've no experience on electric musical instruments, but a microphone is a essentially an active resistor/capacitor that convert sounds to resistance/capacitance-variation and hence electric signals. It does not produce any form of voltage itself (eg. you do not need battery for microphone).
Hence, it depends on your musical instruments. If you were to get the adaptor above, perform a voltage test on all 6 combinations (of the 3 contacts) to make sure your instruments does not produce any form of voltage/current. If it does not produce any form of voltage, you ought to be safe for a direct plug-in.

(oops, did I mix up " with mm in my initial post )
Are you using this adaptor yourself? With a Prophet? Does it work?
Not to appear nagging, but there are three facts that make me doubt:
- the description there tells me, that it "converts the standard 2.5mm three conductor jack"
- which can also be seen on the "larger image" (those pictures at expansys often are near causing eye cancer >;-) ), where the plug has *three* contacts
- description also tells us, the adaptor converts to a "3.5mm Mono Headphone Jack".
Well, the jack of Prophet has *four* contacts, and sound out comes in *stereo*. I guess that: tip and first ring are - stereo - out; 2nd ring is mic in; last "ring" obviously is ground. This I take from the fact, that my adaptor for standard 2.5mm to standard 3.5mm stereo earphones really delivers stereo out, but the internal mic is still working.
So I also guess, that this adaptor here has e.g. *mono* out on tip, mic in on 1st ring - and ground on third and last ring - which also would lead to connecting Prophet's mic to ground.
Or am I totally wrong here?
The question about resistors (and such) comes from looking at
http://wiki.xda-developers.com/index.php?pagename=Connectors
(but that's Wallaby and Himalaya wiring, and with the latter there's also an extra (5th!) "outer sleeve" connector); but you can see in the drawing there, that there are a diode and three capacitors between mic and ground, and serially a resistor (but all without values).
So I fear, that just connecting a (passive) guitar pickup won't deliver satisfying results.

Hmm. didn't notice that one is a mono output. Anyway, can't really find one with mic and headphone out for streo (actually, gave up searching). I guess there aren't enough market for people pluging in their own mic.
As for the diagram, it looks like that, for the micrphone, the circular wiring thing is an inductor, not a resistor, since it is marked as L1. From what it seems, it looks like those capacitors and inductor is there to bias the circuit such that the mic is to be in the right impedance to pickup speech. That is more to "adjust" the mic such that it will gives the correct values (probably due to its small size?). So, if you were to plugin in your instruments directly, the result may not be that good. But probably it will. You may need to tune your software to adjust for this?
As for the z-diode there, it is a mystery to me. Can't think of anything useful for it, except to ensure the mic-in is always >= 0 (greater or equals to zero).

Well, first of all: thanks a lot for your answers!!
I also gave up searching before posting here; also searched for a separate 4-ring 2.5mm plug; but before investing in a second headset just to get that plug, I thought I'd ask here ...
Inductors, resistors et all ... it's been way too long since my physics intensive course on grammar school ...
Your thoughts sound logical.
So I'll get me the headset for the plug and tinker an adaptor myself - without any extra inductors or capacitors. Will see how it works - if not, well, I'll come back here again to ask for the values of them ... and tinker along ;-)

I build an adapter on my own out of the standard hands free headphone which was included in delivery.Unfortuately I had to destroy the case a bit I just made a kabel with a 3,5 mm jack and soldered it on the circuit board and bridged the build in mikrophone.Now I am able to connect a stand alone microphone to my Prophet.
Cheers

you can order one @ http://mobile.brando.com.hk/

@ Repose: you mean the handsfree headphone? I already ordered one at expansys
@ colida: that's another idea, keeping the circuit board. Such, all capacitors etc. are in place ... maybe just looks a bit ugly, you really have to break that little housing.

speaker not working

my phone speaker has stopped working, can only use on speaker phone. Any ideas or know where i can get spare parts.

i really dont see htc getting spacial custom speakers made for their phones it would be too expensive and there really would be no reason to
so if i were you i would
http://forum.xda-developers.com/showthread.php?t=275788
take apart my device
and get the part nr from the speaker or simply remove the speaker
and take it to a electronic store and get one like it

The speaker on my mini s stopped working shortly after using headphones in the headphone socket.
I googled the problem and read somewhere (can't remember where) that a solution might be to "blow" into the earphone socket.
They couldn't be serious, could they??? So I blew, and blow me, it works ok again. Maybe muck gets into the socket. As I say, it worked for me.

Headset connector causing issues with internal speaker..
Before you start pulling apart your unit (and voiding any warranty left), make sure to try a bit of Electrolube contact cleaner into the headset connector (and a few insert / removes of the headphones).. The little metal ground pin seems to deform and lock 'out' sometimes.. causing the PDA to get stuck in 'headset inserted' mode...
Unfortunately the only way to fix this if the connector is bent is often to bend the connector back into place (open the unit).
Good luck!
Andy
www.pressdigital.com.au
Press Digital Support Team

Problem: Stuck in headphone mode after using 3.5mm audio jack

I was listening to music in my car today with my Sprint TP2 hooked up via the 3.5mm audio jack. When I disconnected the phone from the jack, the phone remained in 'headphone mode'. I knew it was in headphone mode still because it displays the little headphone icon on top and I could not hear any audio unless I reconnected the 3.5mm jack. So basically, I can't call anybody from my phone right now unless I hook it up to some speakers via the 3.5mm jack. That or use my BT headset.
Things I have tried to fix the phone;
- Unplugged and replugged in the 3.5mm stereo jack numerous times.*
- Soft reset
- Removed battery for 30 seconds and restarted
- Connected BlueTooth stereo headset and disconnected
* Extra weirdness; Gives me a voice commander error when I reconnect the jack. Voice Commander is not even enabled.
Nothing worked. So I just did a backup of my phone and I'm going to attempt a hard reset. We'll see if that fixes it.

Update: Right after I posted this thread, I tried plugging in several different devices with 3.5mm jacks and the headphone icon disappeared. However, I still did not have any audio. So I did a soft reset and surprise surprise... audio is back!!!
Anybody else encounter this bug? I'm not sure if it's a software or hardware bug, but it's definitely a bug.

guys, do you mean you have already have the 3.5mm specification tp2 ?
i didn't see it yet..

sounds like a hardware issue? especially if the soft reset did not resolve the issue...

czbenson said:
guys, do you mean you have already have the 3.5mm specification tp2 ?
i didn't see it yet..
Click to expand...
Click to collapse
Sprint and Verizon versions of TP2 have a integrated 3.5mm jack.

I just had the same problem being stuck in headset mode
I tried a soft reset with no luck so I was pretty sure it was something physically wrong. Instead of plugging my headset all the way back in and taking it out, I used the tip of the plug (like a Q-tip, 1/4 of the way in) to see if there were any sensors or metal still depressed and after a few light sweeps, the headset mode icon disappeared. Keeping my fingers crossed, I didn't use the 3.5mm jack for the rest of the night and I was able to use my headset and removed it without a problem this morning.
Ultimately this is most likely a physical issue, but I'd rather not send my phone in for a replacement (even though this would probably qualify as a manufacturer defect). Hope this helps if anyone experiences this in the future.

sniczz said:
I tried a soft reset with no luck so I was pretty sure it was something physically wrong. Instead of plugging my headset all the way back in and taking it out, I used the tip of the plug (like a Q-tip, 1/4 of the way in) to see if there were any sensors or metal still depressed and after a few light sweeps, the headset mode icon disappeared. Keeping my fingers crossed, I didn't use the 3.5mm jack for the rest of the night and I was able to use my headset and removed it without a problem this morning.
Ultimately this is most likely a physical issue, but I'd rather not send my phone in for a replacement (even though this would probably qualify as a manufacturer defect). Hope this helps if anyone experiences this in the future.
Click to expand...
Click to collapse
It is a hardware issue and is common to most 3.5mm jacks. I had also experienced this last year with my Treo Pro and since I really wanted to know the problem, I opened up my phone and voided all warranties. Inside the 3.5mm jack there's a lever type copper that bends to make contact with another copper metal, some kind of switch that's supposed to connect and disconnect the contact between these 2 metal pieces whenever a head 3.5mm plug is inserted.
What happened is when you disconnected the plug, the metal that's supposed to bend back to it's original position never did. That's why it's permanently stucked in headset mode because the phone thinks the plug is still inside. This probably happens due to age and possibly has something to do with moisture and rust, not to mention that copper is highly malleable.
Sad to say that until now this technology hasn't changed and is still being widely used. Hopefully someone will give this issue a real solution.

I had this problem recently and took a dry q tip and rubbed it back and forth across the little pin on the bottom of the headphone jack until it cleared up the problem.
Does anyone know if a USB to 3.5mm headphone jack adapter works on the CDMA tp2? I'd really like to use regular headphones but don't want to jeopardize getting my phone stuck in headphone mode.

Drache said:
I had this problem recently and took a dry q tip and rubbed it back and forth across the little pin on the bottom of the headphone jack until it cleared up the problem.
Does anyone know if a USB to 3.5mm headphone jack adapter works on the CDMA tp2? I'd really like to use regular headphones but don't want to jeopardize getting my phone stuck in headphone mode.
Click to expand...
Click to collapse
Yes, the USB headphone adapter works on the CDMA versions. If you plug in a second headphone set to the other open port, which ever one was connected lastly will be the one to have sound.

Fixed the problem!
I had to disassemble the phone, voiding the already expired warranty and solder the contacts together on the audio jack. I can't use a 3.5 mm jack anymore, but I can at least use the phone now without always using a bluetooth. I'll get a usb adapter for when I want to listen to music.
Here is a picture of the contacts I soldered. I used a 20 w soldering iron, I wouldn't use anything larger.

Drache said:
I had to disassemble the phone, voiding the already expired warranty and solder the contacts together on the audio jack. I can't use a 3.5 mm jack anymore, but I can at least use the phone now without always using a bluetooth. I'll get a usb adapter for when I want to listen to music.
Here is a picture of the contacts I soldered. I used a 20 w soldering iron, I wouldn't use anything larger.
Click to expand...
Click to collapse
i would hate to do this on my vibrant lol, media sound recently gave out on me after unplugging the headphone. this sucks. id look around for replacement parts..til then.. gotta get busy with the q tips til i get it to work.

DIY FM Antenna With 3.5mm Audio Jack

This is not something new and have been shown many times in YouTube. It is interesting to have for any phone with 3.5mm audio jack that can be easily done within a few minutes. I do not use my headset with my phone so this would be a nice hack to have around to listen with your friends on some local radio without consuming your data plan and phone battery.
Find a headset that you do not need. We only want the part with the 3.5mm audio jack. Just trim it down to about 20cm in length and fold it in half and tie a knot at the end. I tied a lasso knot at the end just so I can adjust the length of the receiver later on though it may not help much in reception quality.
Tested several length from 1 meter all the way to 20 centimetres and found not much difference in reception quality for a fact that you will be using your loudspeaker to listen to the FM radio. The same with whether to loop or not to loop the receiver but looping the receiver gives it a cleaner look while maintaining the same reception frequency.
Putting your phone too close to a human body greatly interferes with the FM signal. On the other hand, placing your phone on a metal table may enhance the FM reception.
Perhaps those who have knowledge in electronics can shed some light to optimize this simple hack further.
Have fun...

I didn't know. Works like a charm !! Thank You

Doesn't work for me. When I plug in the trimmed headset cable with the ear pieces cut off, the FM App keeps asking me to plug in a headset. Works OK when I plug in an untrimmed headset and switch to speaker in FM App menu.
Is there a further trick to getting this to work? Are you using the stock FM App?

I had the same problem myself, and it stems from the fact that smartphones will interrogate any headset you plug in to check if it is suitable. There are basic stereo headphones with three contacts on the jack plug (from the tip they are left, right and ground) and should work on any phone regardless. But there are two variants of headset (i.e. those with a microphone) that use four contacts, the difference being whether they connect the mic on the third or fourth contact.
As of 2016 most manufacturers have standardised on one system (left, right, mic then ground), but there are enough older phones and matching headsets out there that use the alternative pinout scheme. For example my old Sony Xperia used L-R-G-M (the same as say Blackberry), necessitating the use of an adapter for certain accessories. My latest Z5 however, has moved to the L-R-M-G pattern, which means I can no longer use my favourite old Sony headset anymore, not even as plain headphones, the Z5 just refused to talk to them.
That explains why a dumb wire might not work with a smartphone, because it is looking for a signal loop on all four (or three) contacts to try and figure out what's been plugged into it. The solution is to short out the wires to fool the phone into thinking there actually is something on the other end. Simply bare all of the wires at the cut end of the cable, burn off the fine lacquer or cotton that is used as an insulation, then twist the wires together to short them all to the ground. Better still, solder them together and cover with a bit of heat-shrink for a proper finish.

Found some pre-made antennas in ebay, you can try searching for 3.5mm antenna. They look pretty decent. I am also looking for compatible antenna, if any, that is compatible for steven303's new headphone jack.
Edit: did some research and found that the 3.5mm steven303 mentioned is called '3.5mm 4 conductor' or 'TRRS antenna 3.5mm', you can try searching for them in ebay or look for similar ones lying around with wires long enough to be loops around to be used as antenna for new phones with the new type of head jack.
I got two item I think can be suitable for this purpose; search with the following keyword in ebay;
1. 3.5mm 1/8'' Male To Male 4-Pole 3 Ring TRRS AV Audio Extension Cable 1.2M/4Feet
2. 4-Pole 3Ring TRRS 3.5mm (1/8'') Male To Female AV Extension Cable 3FT/1M Black

I have an additional issue. I use my phone's fm radio feature with an old pair of headphones for an antenna and listen via blue tooth headphones when I'm running or just working around the house, etc. My problem is that as the phone moves around in my pocket, the movement causes the phone to think the headphones came unplugged for a second and the radio turns off. When that happens I have to take the phone out and turn the radio back on. This happens often enough that it is a pain in the neck.
A separate but related issue. With some old, non functioning headphone cables the phone doesn't think there is anything plugged into it. I am lucky in that my phone gives me the option to "Play anyway through speaker or bluetooth". So even though it thinks there isn't anything plugged into it, I do, and I have good FM reception.
Here is what I want: I want to know what to do to my old headphone wire so that my phone doesn't think there is anything plugged into it when it is, in fact, plugged in. I hope that makes sense!