[Q] What is that connector at the back of the device? - Galaxy S II Q&A, Help & Troubleshooting

I noticed a weird connector at the back of the device, I dont have a way to picture it at the moment but I found it on the internet.
Its under the cover in the red circle I draw,
Do any of you know what its good for?

eranyanay said:
I noticed a weird connector at the back of the device, I dont have a way to picture it at the moment but I found it on the internet.
Its under the cover in the red circle I draw,
Do any of you know what its good for?
Click to expand...
Click to collapse
I think it is for attaching a stylus.You just loop the thread through it and close the cover.

It's meant for a wristband. You can buy the accessory, loop it through that hole, and then close the back cover (so it never falls off).

Are you sure about it...?
I think you're wrong,
the wristband/small things you put on your phone like small dolls is the yellow square
this one is something different.

It its a connector for an external gsm antenna. However be warned, do not plug any thing in to it as others have reported this will disable the internal antenna and you will not get a signal afterwards without a visit to a service centre or some soldering.
http://forum.xda-developers.com/showthread.php?t=1273292&highlight=antenna
Sent from my GT-I9100 using Tapatalk

I've seen that type of connector on other phone's in the past. I always thought it was for an external antenna. I'm not sure though.
Edit: mrm1 just beat me to it ^^^

That was my first impression, after seeing a similar connection for the wifi antenna in laptop's hardware..
Thanks, and of course, Im not planning to connect anything to it anyway

Related

TG01 external wifi antennae is possible!!!!

ok i may have this completely wrong as i have not tested it yet but i noticed on the back of my tg01 i had 2 round black stickers, one top left, one middle left.
After peeling this stickers off i have 2 little ports which look remarkably like the ports used on internal wifi chips (laptops, nintendo ds) which the areial plugs into for the wifi signal
We can now enhance the tg01's wifi reception with a little careful wire placement
i hope his helps someone with the wifi reception & maybe better battery life as its not having to try so hard for a signal
comments?
Are you sure one of those are not for a external GSM antenna? Like for using in a car
no, i did think this but they are to small. only 2-3mm across. i know what im talking about when it comes to hardware, they are definitely wifi ant. ports.
http://images.google.co.uk/imgres?i...internal+wifi+connector&um=1&hl=en&tbs=isch:1
this site has loads of pics and prices for the relevant hardware
its called an ipx connector, the pigtails they sell can be used to act as the antennae.
i think this could be a good thing
that connector u linked in is a standard connector used with laptop wifi card , they have a little pin in the middle , the connector on the tg01 has no pin in the middle , the ring around it is the shading
kk here is what i know so far.....
most (if not all) builtin wifi chips have an antenae port out, i know this through research with the nintendo ds, and internal laptop chip on various laptops ranging from toshiba to sony.
they commonly have two of the ipx ports for the loop with the wifi flylead.
it may be possible qualcomm have used a proprietary ipx adapter for extra sales through the hardware of there chipset or toshiba have gotten the grubby little hands on it and done it that way
we need people who want to run an experiment on this and find out if they are what i think they are or if im completely wrong
volunteers????
i happen to have a connector ur looking for , but , it doesnt have a pin in the middle and its 90' angled so it wont fit unless i get the back cover off ... with that said , i dont have a 3angled srewdriver thats needed
... ill make some pics later
could it be possible the snapdragon chipset has done away with the pin for a design point? they may be purely there as a dud bit of hardware as qualcomm have directly etched the wifi ant onto pcb and not allowing the flylead?
or...
they may be semi usable with the core (the bit with the pin) etched onto the pcb and the earth allowed to be enhanced by just using the outer rim of these ipx ports?
or...
im totally wrong and as well as the usb host function you could attach a couple of jump leads to the beast via these ports and jump start that big ol v8 what keeps stalling?
Perhaps they could be test points, do you think you can show us a photograph?
i will upload pics tomorrow, they wont be great quality as i have to use my wifes blackberry for em and it dont take great up close pics.
test points are a possibility, tbh it did cross my mind but usually there just dotson the pcb, not ports, but it is a more advanced piece of hardware.
just out of interest but if you were to hook it up with the ports via usb, there would be a chance you could damage it because of the power usb ports output. if it turns out to be wifi then your gonna blow the chip or worse.
but if you want to try it then by all means psot results
hope this help
http://img688.imageshack.us/img688/5106/p1210021g.jpg
nice one!
looks like it connects two aerials for better wifi/radio
compare the connector with this
i558.photobucket.com/albums/ss28/linyedongwyl/Intel-5300-half.jpg
thats the connector for the ipx that has been linked earlier , this is a little different , it would be nice to see what the connectors look like on the tg's wires?
alrite , lets compare this baby to the xperia x1
www.phonewreck.com/wiki/images/b/b2/Xperia_x1_pcb_1.jpg
u can clearly see it also has two unused connectors of the same kind wich appear to be unused /but on tg the two upper ones were connected on the pcb!!!/
as for the interconnection of unknown function on the backplate they used the battery cover to pass it thru(the cover's back is unpainted on thoose specific points to give conduction) if it were to just hold the cover in place the would of left the paint on
see the four pins on the phone around the battery
www.ubergizmo.com/photos/2009/3/xperia-x1-battery.jpg
so i was right, we can get better wifi signal with these ports.
and then
better signal + less energy needed = better battery life
and the SE using the conductor pins for the back cover they have used that on the old w series of phones to. no real idea of what it does though
thanks to those who uploaded pics, helped out a lot with explaining what they are and the circuit detail.
so who' gonna be the first to install this on there phone and so testing for battery life and signal improvement?
Did you get anywhere with this? Very interested!
This sort of thing would surely work:
http://www.ebay.co.uk/itm/800-900-1...099221?pt=PDA_Accessories&hash=item4ced70add5
IPX antenna.
Alternatively.. what would almost 100% work is a replacement antenna cable for the tg01
Although I could be wrong... if you look at this review of the LG P990 (Optimus 2X) you will notice the two different types of connector: http://www.anandtech.com/show/4144/...gra-2-review-the-first-dual-core-smartphone/9
External aerial points for testing the phones at the factory? Can they be used/abused to get an external or bigger aerial setup? What connector is that without the pin????????
Update.. is it an MMCX connector ? (or even MMCX-KC). I am tempted to buy one from ebay (although my TG01 is bricked LMAO, at least I'd know if it fit!) Pretty certain now it's an MMCX connector. Now trouble is... you can get that connector for GSM and GPS... so what are the connectors for I wonder.
For example.. I have terrible reception in the office so having a bigger external aerial on the phone may help, but I'd be interested in a better GPS cable as well Let's have some fun!
EDIT: OR.. I just had a look at my Moto V3i external connection and that is almost identical to the connectors on the TG01.. and it looks like you can get an aerial/antenna kit for the v3/v3i Might give it ago but it's pricey at about £20 :-(
LMAO @ this link: http://www.ehow.com/how_7580234_increase-reception-v3i.html Fancy testing a paperclip guys?
Well... I just ordered a 3G/UMTS antenna from china (so will be a while) with a MMCX connector. I will let you guys know if it fits AND works
Another edit LOL: I also just ordered another external antenna. This time for the V3i RAZR, as it looks like it has the same connector type as the TG01, so will give that a go. Only cost £8.05 for the adaptor and the antenna, so not 'too' bad for something that should fit.

[Q] [q] tf101 hardware mods inside dock pictures!!!!!

Thread for hardware mods
POSTING INTERNAL tf101 pictures
like 3g dongle ? internal sd cards? ssd?
removing the battery for 2 HDD 500go?
finding sd cards hubs? usb to sata cables?
? there is a place in the tablet for a 3g dongle?
there are 2 screws under the upper rubbers and the dock open easy
there is a lot of spaces avaible
My MIFI might actually fit in there, all I would need to do is supply it power somehow.
I'm no hardware engineer though, but if thats possible it would save you from the driver issues with a 3g dongle.
I wonder if it would be possible to check which pins from the adapter connect to USB - so we can make DIY USB adapter for those without a dock.
hmm adding an hdd would be very interesting, sata won't be very hard, powersupply will be.
Sent from my O2x with CM7
This is what I was looking for, looking to do some mods to the dock.
Thanks Markolino72.
Internally mount and wire a 32gb memory stick to the USB port so you get a 32gb hard drive added whenever you dock It might even have enough room for a portable USB hub so you don't lose use of the external usb port?
does anybody think it will be easy to make a DIY dock fix for those with battery draining issues like me?
It seems like it would be relatively easy - just make a switch to either connect or disconnect the cords coming from the docking point.
Or even better, maybe if you put the correct microcontroller in there you can have it switch the pins to floating, if it senses that there is no tablet connected (not sure about the details though)...
ydnality said:
does anybody think it will be easy to make a DIY dock fix for those with battery draining issues like me?
It seems like it would be relatively easy - just make a switch to either connect or disconnect the cords coming from the docking point.
Or even better, maybe if you put the correct microcontroller in there you can have it switch the pins to floating, if it senses that there is no tablet connected (not sure about the details though)...
Click to expand...
Click to collapse
Have you seen the post in the General forum (2nd page now I think)? Posted by Asus_USA themselves, if you prove the 6 steps that your dock has the issue you can get a new one! I really do hope that I can get mine exchanged, waiting on a reply from my local service center..
Regards.
In regards to the hardware mods, that really looks amazing. Would love to put in my mifi there as well, attach it via USB to charge = your own 3g model Maybe a little modding you could get the mifi to power on only when the dock is connected (remove the battery of the mifi?) so that when it powers on it'll power on the mifi as well. Only a few thoughts.
Maybe a little modding you could get the mifi to power on only when the dock is connected (remove the battery of the mifi?) so that when it powers on it'll power on the mifi as well.
Click to expand...
Click to collapse
it's a good thought but the mifi I have (novatel 2200) wont work without the battery, for some reason if the battery is bad or removed you cannot run usb, it must be the way they have the power run through the battery or charging. Not sure if all are like this or not.
andrewklau said:
Have you seen the post in the General forum (2nd page now I think)? Posted by Asus_USA themselves, if you prove the 6 steps that your dock has the issue you can get a new one! I really do hope that I can get mine exchanged, waiting on a reply from my local service center..
Click to expand...
Click to collapse
I talked to the Asus service rep about it. They currently won't give you a new one since they have a hardware upgrade to fix it. If you wanted a new one you needed to do before they solved the problem. I'm waiting on the upgrade part to be delivered for for mine. Should in a few days.
A switch should theoretically work. The guy at the service center said the replace something that goes into the hinge of the dock. Looking at the teardown pics, you can see a wire goes into each side of the hinge, so I think they replace the wires and maybe make a new connection somewhere on the dock.
Surprising how much wasted space there seems to be in the dock -- it's nowhere near as tightly packaged as the tablet itself. Looks like Asus can optimize the size or fit some more features in future versions, if they want...
Let me see if I am thinking correctly...Your saying using something like mifi installed via USB wires (will it be always on?) then connect via WiFi on your transformer? So basically your putting the mifi in a case that can never be opened without a screwdriver? I guess one would always have access for your other devices as well as long as the TF is in the vicinity.
P.S. I think I think this is a good idea, not decided though. I like to think of it in a real world application.
there is another post with a guy putting in an SSD, but it bulges at the keyboard. A 32g SD card would be nice.
Sent from my Transformer TF101 using XDA Premium App
typci said:
I talked to the Asus service rep about it. They currently won't give you a new one since they have a hardware upgrade to fix it. If you wanted a new one you needed to do before they solved the problem. I'm waiting on the upgrade part to be delivered for for mine. Should in a few days.
A switch should theoretically work. The guy at the service center said the replace something that goes into the hinge of the dock. Looking at the teardown pics, you can see a wire goes into each side of the hinge, so I think they replace the wires and maybe make a new connection somewhere on the dock.
Click to expand...
Click to collapse
You are getting the replacement part? bought mine on the US, but live in chile... would really like to somehow get the part that needs to be replaced and do it myself
tanguita said:
You are getting the replacement part? bought mine on the US, but live in chile... would really like to somehow get the part that needs to be replaced and do it myself
Click to expand...
Click to collapse
There's very little chance they'll give anybody the part, and nothing in the previous person's post suggested they're doing so for him.
Talk to Asus Chile and get it serviced by them:
http://www.asuschile.cl/
http://latin.asus.com/Static_WebPage/Service_center_chile/
knoxploration said:
There's very little chance they'll give anybody the part, and nothing in the previous person's post suggested they're doing so for him.
Talk to Asus Chile and get it serviced by them:
http://www.asuschile.cl/
http://latin.asus.com/Static_WebPage/Service_center_chile/
Click to expand...
Click to collapse
Well I ended up calling them. I would have to ship the dock to "someone" in the US, have them ship it to the repair center, fix it, ship it back and then ask that "someone" to ship it back to me... sooo, I'm basically screwed... I ended up with a nice 150US paperweight (not even considering the horrible light bleed on the transformer).
tanguita said:
Well I ended up calling them. I would have to ship the dock to "someone" in the US, have them ship it to the repair center, fix it, ship it back and then ask that "someone" to ship it back to me... sooo, I'm basically screwed... I ended up with a nice 150US paperweight (not even considering the horrible light bleed on the transformer).
Click to expand...
Click to collapse
Yeah, actually, I hadn't realized that but it does say it clearly on the product warranty page:
"Brazil and South American countries don’t support global service"
http://support.asus.com/warranty.aspx?SLanguage=en&p=20&s=16&m=Eee Pad Transformer TF101
took mine apart also and there is quite a bit of room.
i plan on putting a 128gb usb flash drive inside the dock and soldering onto the usb connections once i get all the bits in.
Any bigger pictures? Are the screws under the rubber feet?
just two screws under the rubber feet near the hinge then it just pulls apart from the top
had to take mine apart as the spring/clip mechanism for the sd card wouldnt lock the card in.
now the card is stuck in with no nails haha a simple fix.
This is good news. I hacked a Crystal HD decoder card (pcie), USB wifi dongle, a logitech nano receiver, and a 4 port micro usb hub (from a touch screen setup) into a Dell mini 9 and there was absolutely no room compared to this.
They even have covers for the USB ports, so if you remove a header and solder wires up you just have to hot glue / epoxy that cover from the back and you are money. Looks clean and stock.
I have an old 64 GB thumbdrive that might find a new home. Maybe a 1.8" usb HDD would fit in there with the battery, without the battery who knows.

[Q] Broken pin on USB Need Solder Location On Board

Hello , When I first Purchased my Evo 3D, I noticed that any usb cable attached to it would never fit snug it always had movement like wiggled alot. I should have exchanged it but didn;t think it would eventually lead to serious damage until now, well, somehow the first pin on the right broke off and checking online with research it apparently is the +5 of the usb. Which basically screwed me.
I don't have much of an issue with no longer having the usb data sync ability since I can just use a micro SD adapter, and I have an External Battery Charger from Radio shack which helps because I can just charge the batteries with that and insert in my evo3d But the issue I have now is I realize i rely on the 4G tethering ability which i use constantly and it has become a pain to have to run and switch over batteries so my wifi tethering can maintain my computers online.,
Anyway so noticed a few evo 4g mods online where the person would solder two wires one to the negative and other to the 5v positive where the usb is located and then shape the wires nicely and make a custom usb hole somewhere else on the phone and eventually have a usb charging ability similar to one of the attached pictures ( for evo 4g of course not for the 3d)
So anyway i would like to try something similar where i can just locate some solid solder points on the phone and wire up two 5v and ground wires and relocate a custom usb slot somewhere else on the phone, Below is also some zoom closeups of the evo 3d board so my question is any advice to where I can solder the 5v and ground to, I am clueless to where and what points i should try the underside of the usb slot is all metal so seems like not able to solder there maybe on one of the little chips or something perhaps
,, thanks for any help
in reference to the attached images:
the one with the 5v writing is for an Evo 4g Not 3d But Im putting this picture i found online just to give a similar idea of what i need to find on the 3d
the one with the wired shell mod us just Another photo online of what I want to do but once again need the solder points
the other two are the best closeup pictures I could find of the 3d which maybe someone can just point out to me the locations by looking at it, I will take clear zoomed in photos if needed when I have access to a camera at home
thanks anyone for your help!
Why don't you just take it to Sprint and have them repair it? They'll do it for free.
Not from I heard. They charge 100 to fix it. And not even sure they would give me a loaner phone in the meantime. Also , I went into RADIOSHACK and showed and.spoke to one of the reps and he.told me.I wouldhave to pay unless I had their extended warrantee.. I noticed a resistor like chip above.and in front of where the 5v pin is.I wonder if I can solder on that
Sent from hell
suddene said:
Not from I heard. They charge 100 to fix it. And not even sure they would give me a loaner phone in the meantime. Also , I went into RADIOSHACK and showed and.spoke to one of the reps and he.told me.I wouldhave to pay unless I had their extended warrantee.. I noticed a resistor like chip above.and in front of where the 5v pin is.I wonder if I can solder on that
Sent from hell
Click to expand...
Click to collapse
Call sprint and talk to a supervisor. They will send you a new phone or set up repair for free. Call and hang up twice, then call again to get sent directly to a supervisor.
Unfortunately me being a tinkerer ended up breaking off the ground pin and was not able to get serviced , even tried the supervisor and no go, I tried another radioshack and sprint store and of course they noticed it was opened so screwed me out...
anyway,, I taken some fair quality images of the board surface. maybe a +5v location can be pointed out from the images? thanks again
suddene said:
Unfortunately me being a tinkerer ended up breaking off the ground pin and was not able to get serviced , even tried the supervisor and no go, I tried another radioshack and sprint store and of course they noticed it was opened so screwed me out...
anyway,, I taken some fair quality images of the board surface. maybe a +5v location can be pointed out from the images? thanks again
Click to expand...
Click to collapse
I know this is old. But did you ever figure it out? I need a 5v+ location as well. I want to do the inductive charging mod on the 3D.
xkravenx said:
I know this is old. But did you ever figure it out? I need a 5v+ location as well. I want to do the inductive charging mod on the 3D.
Click to expand...
Click to collapse
Instead of making a new thread, I figured I would add to this... I too am trying to mod mine with inductive charging, unfortunately my hands are a little too shaky to solder to the point that I discovered to be continuous with the +5v on the usb port.
I can't really find a clear picture of the PCB anywhere otherwise I would show you, but its about a centimeter or two down from the top left when you open your phone, run your multimeter through those points and you'll find it.
I guess I came here looking for another point..
suddene said:
Unfortunately me being a tinkerer ended up breaking off the ground pin and was not able to get serviced , even tried the supervisor and no go, I tried another radioshack and sprint store and of course they noticed it was opened so screwed me out...
anyway,, I taken some fair quality images of the board surface. maybe a +5v location can be pointed out from the images? thanks again
Click to expand...
Click to collapse
xkravenx said:
I know this is old. But did you ever figure it out? I need a 5v+ location as well. I want to do the inductive charging mod on the 3D.
Click to expand...
Click to collapse
bronx623 said:
Instead of making a new thread, I figured I would add to this... I too am trying to mod mine with inductive charging, unfortunately my hands are a little too shaky to solder to the point that I discovered to be continuous with the +5v on the usb port.
I can't really find a clear picture of the PCB anywhere otherwise I would show you, but its about a centimeter or two down from the top left when you open your phone, run your multimeter through those points and you'll find it.
I guess I came here looking for another point..
Click to expand...
Click to collapse
PLEASE PM me.. those fo you with a broken port, I might have solution for you (nothing shady promise just trying to help where I can, I'll explain once I'm PM'ed). The other guy if all your trying is inductive charging sorry LOL
bronx623 said:
Instead of making a new thread, I figured I would add to this... I too am trying to mod mine with inductive charging, unfortunately my hands are a little too shaky to solder to the point that I discovered to be continuous with the +5v on the usb port.
I can't really find a clear picture of the PCB anywhere otherwise I would show you, but its about a centimeter or two down from the top left when you open your phone, run your multimeter through those points and you'll find it.
I guess I came here looking for another point..
Click to expand...
Click to collapse
Hmm thanks. I will try it when I open the phone. The soldering point should be bigger than the micro-usb pin I would hope.

[Q] Lost Signal After Screen Replacement

I've been working on this problem off and on since the summer and have read through pretty much everything I can find (some similar posts with no resolution). After about 6 months of using a Galaxy S6, I want my Xperia back.
Long story short, I replaced the screen on my Xperia Z3V a while back. I'd already paid Sony for one screen on this phone and didn't want to do it again (wish I did). After I replaced the screen, the phone worked fine except I no longer had "proper" cell/4G signal. When I say "proper," the signal randomly appears (4 bars/-87dBm) and randomly disappears (-120dBm). I can't find any pattern to this. In some places with very good signal such as the Verizon store, the phone will try to activate but will fail to make calls or receive texts after.
List of what I've tried so far:
- factory reset
- new SIM from Verizon
- new antenna cable (blue coax cable, clips into side of phone)
- new antenna
The part that really confuses me is that disconnecting the blue coax cable has no effect. I.e., if I disconnect the cable while the phone claims to have signal, nothing changes. My assumption is that signal would instantly drop.
Is there anything worth trying before writing the phone off?
Possibly related... There is a white putty along the bottom of the battery that turns into a flat white cable which runs up the length of the battery to the WiFi antenna. Can anyone tell me what this might be? I can't find pictures describing this phone anywhere.
Thanks in advance.
I have a Z3 and the blue coax cable is the one for signal, in this case it seems either it is broken or something along those lines, as I have the same problem in my z3 but I know why because I had broken the coax connector so the signal issue. Try checking the antenna at the bottom or the connector on the motherboard itself
Neelkanth said:
I have a Z3 and the blue coax cable is the one for signal, in this case it seems either it is broken or something along those lines, as I have the same problem in my z3 but I know why because I had broken the coax connector so the signal issue. Try checking the antenna at the bottom or the connector on the motherboard itself
Click to expand...
Click to collapse
That's true. You probably damaged the coax connector on either the motherboard or the loud speaker side. The proper procedure for removing the blue cable is holding down the socket with one tool and removing the cable with another. And best is to remove the speaker module without touching the cables...
Hmm... I did not realize the coax cable was quite that fragile. Lesson learned. It seems impossible to find brand new replacements for this particular phone, I wonder if Z2 or Z3 parts would fit.
The old iPhones I've successfully replaced screens on seem like toys next to the Sony...

LG G5 - where is the GSM antenna?

Hi there.
I have a G5 as my backup phone. Recently, I've replaced the fingerprint scanner (it stopped working as a button, no cleaning would help, so I've bought new part online and replaced it), and after that I have no signal (-1dbm 99asu). Not even an alarm call is possible.
From my research, the antenna module is the bottom slice of the phone, you attach the battery to (one with mic, USB-C and bottom speaker)? I have both original bottom part and a Cam+, no signal on either of them. Where else should I look for any damage, that would lead to my problem - no signal at all?
I have a similar problem. The signal is very low everywhere, I tried to clean all the contacts between the bottom part and the phone, and nothing changed.
Me too i have a problem with the signal since display change. How can i get it fix. The phone has very low signal and it has network only on 3g on LTE it hasnt any network and 2g signal doesnt have.
Изпратено от моят LG-H850 с помощта на Tapatalk
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
nah i got the same problem here after disassemble the phone. I already clean all things that contacted with the backdoor or with mainboard but the problem still there. Only got 0-1 bar of 4g even it near the tower until it change to 3g with the same condition. but the 2g signal is always full bar.
Jc_master said:
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
Click to expand...
Click to collapse
so is it located on the mainboard or part of screen? could you take some picture of it :crying:
Jc_master said:
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
Click to expand...
Click to collapse
maybe post foto where is gsm ahtenna?

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