What,Why,and how can I tinkier with them - General Questions and Answers

Ive noticed on many hand sets that Ive acquired over the years that there are what seem to be coaxialstyle or perhaps better described as ULF modules or connection points(like the ULF connectors that connect your antenna to your wifi card on your laptop) under the back cover near the battery some even have disguising rubber plugs inserted over them to cover the connector. theey are about a millimeter squares with small female type cylinder connectors that stick up with an insulative ring around the in side leaving a small point in the center where a pin would complete the connection. If anyone knows what these connection ports are, how they are used, what they are used for please do explain. Again if youve ever popped the ULF (Antenna) connectors off of the wifi card of your laptop youll have a good idea of what I'm talking about. This topic has intrigued me for years but I never dug into it. Ive got a couple older model phones that im tinkering with the Hardware on and figured I poll the audience so we can all benefit from a little more knowledge about our handsets. Developers thank you for all your hard work, Im learning, and hope to be able to contribute soon. For now Ill just stick to explaining that a root method or custom recovery/rom for a device depends greatly on the Version, region, OS and OS version and not just the model, and probably alot more. Anyway If anyone has some insight into this hardware query Id appreciate it, In the mean time I'll keep digging. Thanks every one

Related

DIY dock using three external charging contacts on bottom of N1.

I'm curious if anyone has a made their own dock that uses the three small charging contacts on the bottom of the N1 instead of using the microUSB port.
So far, I have not seen any 3rd party dock that uses those contact pads. Or maybe someone has figured out a power and/or resistor combination that touches those contact pads and tricks the phone into thinking it's in the Google dock.
Does anyone at least know which two of the three contacts is for 5V and Ground? I don't really care about the one that allows the instant BT sync with the Google dock.
Hi there, I am interested in doing myself as well. I found this on the net, please let me know how you go. I am still waiting for my phone from Google.
tedSmith123 said:
Hi there, I am interested in doing myself as well. I found this on the net, please let me know how you go. I am still waiting for my phone from Google.
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Click to collapse
It's pretty simple if this is the case. I'm a bit concerned about trying it. What's the worst that can happen? I've got a 5V source right here.
So I got out my multimeter and I can at least confirm that the ground labeled in the picture does lead to the ground for the battery. The +5V does not seem to connect though, but it may only connect while ground is connected first. I'm not an electrical engineer or anything close. I think I'll test it out this weekend. Get an old USB cable, cut the one end off, use some test lead and try it. I'll update my finding later.
I would suggest we keep watching this thread. They are already talking about similar docks.
http://forum.xda-developers.com/showthread.php?t=628094
Just tried it. The diagram above is correct. Phone responds to connection and says "Charging..."
Nice
St.Jimmy! said:
Just tried it. The diagram above is correct. Phone responds to connection and says "Charging..."
Nice
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Click to collapse
Awesome, now I'll just have to hope that someone figures how to get the phone tricked into thinking it in the Google dock so that it goes into the clock automatically. I'm hoping it'll be something simple like a resistor, cause that would be easy to wire up. If not, then I'll have to go with my idea of cannibalizing an actual Google dock to make it work.
First let me say I am not trying to be a jerk....but...what would make anyone think that a resistor would be applied to one of the pins as a "signal"? This is 2010 not 1978...signals are digital not analog. I saw 3 pins and instantly knew: power, ground, digital data.
I am only saying this all as a warning to what seems like a growing group of people with no electronics knowledge that think it is a good idea to start jamming voltages through a resistor into a fairly expensive phone...granted it shouldnt hurt anything as long as it is 5v or less...but still.
So be careful and dont break your stuff :-/
Mike
mike105105 said:
First let me say I am not trying to be a jerk
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Click to collapse
Fail, came across very jerk like to me
mike105105 said:
what would make anyone think that a resistor would be applied to one of the pins as a "signal"? This is 2010 not 1978...signals are digital not analog. I saw 3 pins and instantly knew: power, ground, digital data.
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Click to collapse
The ipod/iphone dock connector uses exactly that setup to determine what type of device it's hooked up to. I know it's a dedicated pin and used for nothing else, but that kind of setup is still used to this day. It's simple and it work (KISS=Keep it simple stupid). I'm sure it won't be that simple in the case of the N1, but I did say I hope it's something "like" a resistor, which implies something that is equally as simple.
mike105105 said:
I am only saying this all as a warning to what seems like a growing group of people with no electronics knowledge that think it is a good idea to start jamming voltages through a resistor into a fairly expensive phone...granted it shouldnt hurt anything as long as it is 5v or less...but still.
So be careful and dont break your stuff :-/
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Click to collapse
If there is someone willing to try something no one else has, then that's their prerogative. Sure the internet has all the info one could ever need to be able to figure out how things work with out ever having to try anything for themselves, but where is the fun in that. I for one learn better by doing than by reading. But I also know my limits. I will be the first person to admit that I don't 1/1000th of the stuff there is to know about electronics and IC's and electrical engineering, etc. I will research and research and research until my eyes can't focus and my brain can't process anymore info because I don't want to brick my nice new phone. I am however willing to try something if it seems relatively safe.
So your warnings are heeded, but please just try to show a little respect for those brave and enterprising individuals who are willing try something just to see how it works. We wouldn't even have the custom software and hardware ROM/MOD scene if it wasn't for those people.
Folx,
I dont recall where, but there is a thread out there, where some1 with a scope collected the waveforms from the 3rd pin. There appears to be some form of (simplified) digital communication that happens between the "official" dock and the N1. Not sure if it is unidirectional or what, but it is a short pulse train, at about 100 Hz or so. May be it's sole purpose it for N1 to recognize the presence of the dock and to initiate BT communication and launch the clock app. Dunno.
Well sorry if I came across like a jerk.
As far as what the ipod dock uses, that sounds backwards just like apple. Today the way to keep it simple is digital communication not analog because all you need is one pin off of a microcontroller with minimal support circuitry.
I am all for people trying to figure things out, I was just trying to point out the danger of doing things without having a more advanced electronics knowledge, I dont think anyone wants to damage a $540 phone and just thought to warn you.
garfnodie said:
Fail, came across very jerk like to me
The ipod/iphone dock connector uses exactly that setup to determine what type of device it's hooked up to. I know it's a dedicated pin and used for nothing else, but that kind of setup is still used to this day. It's simple and it work (KISS=Keep it simple stupid). I'm sure it won't be that simple in the case of the N1, but I did say I hope it's something "like" a resistor, which implies something that is equally as simple.
If there is someone willing to try something no one else has, then that's their prerogative. Sure the internet has all the info one could ever need to be able to figure out how things work with out ever having to try anything for themselves, but where is the fun in that. I for one learn better by doing than by reading. But I also know my limits. I will be the first person to admit that I don't 1/1000th of the stuff there is to know about electronics and IC's and electrical engineering, etc. I will research and research and research until my eyes can't focus and my brain can't process anymore info because I don't want to brick my nice new phone. I am however willing to try something if it seems relatively safe.
So your warnings are heeded, but please just try to show a little respect for those brave and enterprising individuals who are willing try something just to see how it works. We wouldn't even have the custom software and hardware ROM/MOD scene if it wasn't for those people.
Click to expand...
Click to collapse
rashid11 said:
Folx,
I dont recall where, but there is a thread out there, where some1 with a scope collected the waveforms from the 3rd pin. There appears to be some form of (simplified) digital communication that happens between the "official" dock and the N1. Not sure if it is unidirectional or what, but it is a short pulse train, at about 100 Hz or so. May be it's sole purpose it for N1 to recognize the presence of the dock and to initiate BT communication and launch the clock app. Dunno.
Click to expand...
Click to collapse
I just searched for 5 minutes and couldn't find it. Could you please try to remember where you saw it? Or any keyword that might pop up?
Dock+Signal did the trick
http://forum.xda-developers.com/showthread.php?t=631508
mike105105 said:
Well sorry if I came across like a jerk.
As far as what the ipod dock uses, that sounds backwards just like apple. Today the way to keep it simple is digital communication not analog because all you need is one pin off of a microcontroller with minimal support circuitry.
I am all for people trying to figure things out, I was just trying to point out the danger of doing things without having a more advanced electronics knowledge, I dont think anyone wants to damage a $540 phone and just thought to warn you.
Click to expand...
Click to collapse
I would also like to point out that the 5th wire in mini and micro usb cables can be used with a resistor to indicated device presence.
http://pinouts.ru/Devices/mini-USB_pinout.shtml
I will agree though that apple likes to do things backwards. They have a habit of bucking the trends, or making new ones, and even changing old ones to suit their needs.
What about current? What should the current on the +5V input be? Can someone with an original dock measure it?
5v .5a for a slow charge, 5v 1a for a normal charge
(think ebay charger vs htc charger)

[Q] Port near battery

Hey XDA,
I just got a Nexus S and when I went to put the battery in noticed what looks like an antenna port to the right of the battery, just curious if anyone knows what it's for as I didn't see anything mentioned about it in the manual (doesn't show up on their diagram of it).
I saw this the other day too, some info on the subject would be nice.
external antenna port. Lots of phones used to have them.
Sent from my Nexus S using XDA App
Thanks,
Do you know the connector port name/type is? I get 1 bar at best of coverage in my home and generally only use my phone in one spot and wouldn't mind an external antenna of some sort.
Edit:
Found the port name MMCX, now just looking for a antenna that will work.
If you see the W!,R1,,w2 holes. they are your attenas and recivers. if you poke the small hole with something you break connectivity. Which you can now get it replaced if you have insurecnce doe.... dont listen to me this is just my expeice that i had with my samsung insinct, I'm sharing education. this is fraud.
please disregard all grammatical errors its 2am and im tired but bored... this is sad.

[Q] Best 3G solutions?

Hey guys
After a notable absence of Android in my life I'm heading back over with a TF300T. Now, as you may guess from the title I want to talk about my various connection options and draw from your experiences with the device to help me make the right choice in terms of getting my new baby online outside my house.
Obviously I could have gotten a device with built in modem but nothing really turned my head in terms of price and stuff, and as I recall just buying a device that just does what you want it to do already isn't really the Android spirit; half the fun is getting there.
Anyway, this leaves me with a number of imperfect options for data connections:
My phone will happily tether up to the tablet and because my network are cool dudes I can do that for free. Problem is that doing so means I can't make/recieve calls and texts while I'm tethered up and since I want mobile data love when I'm out of the house working that would seem to not be a great idea.
Secondly I could jump in with a mobile wifi thing, but I'm really not keen to get a another contract to make that happen and the amounts of data I'm likely to use (literally just web browsing for now and forever) are somewhat low and somewhat infrequent, making this seem to be a pretty bad useage of money. Also with devices offering 'Up to 5 hours of battery life'; well lets just that's not going to last me long enough to be useful.
Finally, I can grab a 3G USB stick and duck tape it to the device. It's the right stuff for my requirements, but it seems kinda non-trivial to hook up a USB device to the undocked tablet and certainly it seems totally unrealistic to wander around holding the tablet with usb adapter, then modem dongle sticking six inches out of the bottom. At worst it'll fall out, at best I'll break it. In the dock this looks great, assuming it'll work in the standard USB port, but outside it just seems silly.
My hope really was that I'd be able to find a cable that'd go from the propitiatory connector (Bad Asus!) to female usb so I could potentially stick the dongle flat against the back of the tablet without noticeably increasing it's footprint, but that seems unlikely. I've seen a guy on youtube who can make such a cable, but it takes soldering and that's somewhat outside my abilities.
So what kind of approach had you guys taken and what experiences have you had using this kind of ghetto-interweb solution? The key is to find the right add on that will let me still use my phone properly, that will give me long endurance but also minimal hassle... A bit of a reach really, but maybe I'm not thinking of all the options.
Apologies if anyone thinks this is in the wrong place, my XDA-fu is a little rusty but I'm pretty sure I'm in the right place. I've googled around and while I can find plenty of stuff telling me all the ways to hook the internet up, no-one seems to be answering what way I should approach making it all happen.
Best choice for me has been a mifi. Look up a Huawei 585 or 589 and plug in a sim and away you go. You can get some very cheap rolling monthly contracts these days for data only plans.
How have you found the battery life to be in practice? Can I leave the thing switched on and get some reasonable proportion of a day out of it? My hope really is that the battery estimates they give are 'x hours of actual internetting' instead of 'x hours of being switched on'. If it'll just quietly sit and stay connected for most of a day then that'll probably be fine, but if I have to finesse the thing on and off all day long just to get past lunch time that sounds pretty bad for my situation.

Just had to share this experience....

Well I have been a owner of a LG Nexus 5 for the past (almost) 2 years now, in fact I am coming to the end of my contract very soon and will be able to either goto another company or get a new phone.
Anyways, sometime ago I experienced a problem with my microphone and external speakers not working, or at at least some of the time... After a bit of research online I found out my problem was related to a connection inside the phone that connected the bottom assembly to the main board at the top of the phone. It required me to remove the back panel and a few screws to remove the plastic cover, but the poster suggested putting some tape on top of that connection to hold it down more firmly to the socket it connected too. So I did this. I put some black tap (electrical tape cut to fit.) on top and then assembled the phone again. Viola, It worked!
Well, a short time after I decided that I wanted to update my phone from stock kitkat (4.4.4). Always been curious about custom ROMs and gave Cyanogenmod a try. Not only that I got bold and tried the nightly releases of the new marshmellow update. After some time I started experiencing things not working, like the camera, and a lot of freezing, hang ups and random reboots (not so much the reboots as the constant freezing). Often I couldn't get anything on the screen or the phone to respond from a locked state and when I did, often the phone would lag so much, that doing anything would take a long time and proved to be impossible.
I started thinking it was the nightly releases as the source of my problem and just kind of shrugged it off and figured "they will eventually fix the problem". I kept this thinking for quite some time. But it occurred too me one day that something else was causing the issue I was facing for the simple fact that the lag started showing up in the recovery mode (also custom) and a lot of times would continue to show up after I rebooted my phone. Hence, would rule out any 'software' issues I was facing.
I began to think that my problem was hardware. Maybe it was just time for a new phone. But still months away from the end of my contract, this meant I would have to pay off the 'problematic' phone first before getting a new one. I really didn't like that idea. So while looking into this problem, in a last ditch effort, I opened my phone again. Dunno why but I also decided to get rid of the tap on the connection I tried to fix before... I popped off the connection there and had a look at it. It didn't seem damaged in any way nor did the socket. Strange as it was I put that connect back in the socket and put the cover plate back on making sure not to torque the screws and assembled everything back up....
Now the mic and ext speakers work just fine and the phone is working like I just opened the box and took it out for the first time. And I have not once seen any problems... I understand what's happening here... still just wanted to share that for it was definitely weird or what?
https://drive.google.com/open?id=0B0pUNVcVRCJ7MThMc0NHLUNkSEU
Sorry about the link, only way I can upload an image.
Just so there is no confusion... an image of the effected area, inside the phone. The arrow points to the connector and more importantly the area of the connector that seems damaged. If I press lightly where the arrow is pointing on this image, the assemable at the bottom (speaker/mic) will work, indicating a loose connection. Although after visual inspection, I cannot see any damage to connector or the socket. I suppose the only way to really "fix" the issue is to order a new part. As stated previously, already tried tape on the socket to help hold it down, but that seem to cause just as many issues with the phone performance. Any other suggestions?
When ordering a replacement part, you need to be careful because there was another XDA member replaced the same part with a cheap 3rd party solution and the phone would not charge until he replaced it with an oem part.
http://forum.xda-developers.com/google-nexus-5/help/to-buy-usb-charging-port-flex-cable-t3314357
Does anyone else have issues with there ext. speaker and mic not working?
An update on the phone;
back to square one. My ext speaker and mic will not work. And that socket has something to do with the LCD connection on the screen as it will black out if just the right area on the back of the phone is pressed. Only way to revive the phone is to long-press the power button for a reboot. Then will come up fine but speaker and mic still do not work.
audit13 said:
When ordering a replacement part, you need to be careful because there was another XDA member replaced the same part with a cheap 3rd party solution and the phone would not charge until he replaced it with an oem part.
http://forum.xda-developers.com/google-nexus-5/help/to-buy-usb-charging-port-flex-cable-t3314357
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Click to collapse
Wow, that sounds pretty low level tactics of LG... just shameful really, but not hard to believe these days...
Quite honestly, I am just going to replace the phone. Think I got a pretty good run out of it and think its pretty well time for an upgrade. Anyway, for the reason I got the phone, it wont matter the speaker and mic don't work. Just going to use it for development and it will be a good test device.
Oh an this post is related to this thread so I thought I would link it for it may help someone else facing similar problems....
https://forum.cyanogenmod.org/topic/125227-nightly-cm13-releases-make-my-nexus-5-very-slow/
I'm not sure that LG had anything to do with the low-quality replacement parts.
If I were you, look for a n5 with a smashed screen that is suitable for parts.
audit13 said:
I'm not sure that LG had anything to do with the low-quality replacement parts.
If I were you, look for a n5 with a smashed screen that is suitable for parts.
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Click to collapse
Good idea, except the iphone is the most popular phone around here ... find it pretty hard to find one, been looking. But thanks.
I have seen quite a few busted n5 phones in Toronto. I have managed to get working phones with a smashed screen for as little as $30 which is rare for Toronto. Average I pay is $40 to $50. For this price, I either use the phone for parts in several phones or I get third part screen from Aliexpress for around $40 CAD.
I just want to update this as well...
I am fairly certain (now thinking about causes) its not really a design flaw, but more so because I frequently sat on my phone when it was in my back pocket...
audit13 said:
When ordering a replacement part, you need to be careful because there was another XDA member replaced the same part with a cheap 3rd party solution and the phone would not charge until he replaced it with an oem part.
http://forum.xda-developers.com/google-nexus-5/help/to-buy-usb-charging-port-flex-cable-t3314357
Click to expand...
Click to collapse
It was not me but I had that same experience. Replaced with a cheap oem and it didn't charge after that.
I found out why. The charger usb socket was not connected to anything ! Unbelievable! It lacked the black plastic backing for that part of the cable to connect to.

MHL HDMI Adapter working on one Note 4, but not the 2nd Note 4

I have 2 Galaxy Note 4 phones. Love em. They are both running the same configuration, Android 6.0.1. I have an MHL adapter that I have used on may devices for quite a while and it works great. However, it only works on one of my Note 4 phones. I am totally baffled. I spent a couple hours reviewing the settings on both phones to see if something was different. I even upgraded it to 6.0.1/Marshmellow and when that didn't work I did a factory reset. I have read every troubleshooting guide and nothing seems to work. I guess what I am looking for is someone who understand what I should be looking for....
Clearly its not the adapter since it does work on the one Note 4.
It seems to me this is likely a hardware problem because of the fact that I did a factory reset, but honestly I can't really say. I don't think the lcd digitizer would affect it, but just in case I pulled it and installed the one from the working phone. No joy.
Anyone know if there are hardware differences between Note 4s made at different times? I don't know what else to try but if anyone has an ideas please offer it as this has me stumped.
Thank you
May be a silly question but I ask it because I see you made no mention of it but have you checked and compared the charging ports between the two and is there any missing pieces or bent port pins, debris, pocket lint or anything else that would affect the connection to the phone?
ticholas said:
May be a silly question but I ask it because I see you made no mention of it but have you checked and compared the charging ports between the two and is there any missing pieces or bent port pins, debris, pocket lint or anything else that would affect the connection to the phone?
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Click to collapse
I don't think it is a silly question at all. For me, usually the problems I have the toughest time solving are often when I am looking for the complicated solution and forget the simple one starting at me. I just assumed the USB was ok because I can charge the phone and browse files. But obviously it has to be that. Really there is not much else it could be when I break it down. Now that I test it more closely the file transfer is not the best on this phone.
I guess I needed to hear that. Yeah so it seems quite obvious now. I just replaced the lcd digitizer so I may as well go ahead and replace the charging port while I have the phone apart since I can buy one for +/- $10.
Thank you for the input. This was an easy one after all. Well...let's hope. I will post again once I receive and install the part.
cbicker said:
I don't think it is a silly question at all. For me, usually the problems I have the toughest time solving are often when I am looking for the complicated solution and forget the simple one starting at me. I just assumed the USB was ok because I can charge the phone and browse files. But obviously it has to be that. Really there is not much else it could be when I break it down. Now that I test it more closely the file transfer is not the best on this phone.
I guess I needed to hear that. Yeah so it seems quite obvious now. I just replaced the lcd digitizer so I may as well go ahead and replace the charging port while I have the phone apart since I can buy one for +/- $10.
Thank you for the input. This was an easy one after all. Well...let's hope. I will post again once I receive and install the part.
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