yashsingh1/xdaforums huggingface dataset:
[Nexus 7 General] b00mb00mchuck:
I almost agree with that de-tuned FCC mumbo jumbo

But I kinda did the same thing... But added an SMA connector and have hooked it up to huge 19dBi panel antennas and pulled WiFi signals from over a mile away....even posted a thread about it here.... And it works beautiful... With all sorts of antennas...

I agree that his method of adding unshielded lengths of wire isn't the "best" way to go about your business but with the broken pin he had in there he did the best he new how and made it work
[Nexus 7 General] bigbop:
Yes, you used shielded coax and assumed the impedance of the external antenna is matched. Big difference with what thecatsmeow did.
[Nexus 7 General] theecatsmeow:
I understand the reasoning with the unshielded wire picking up interference and also the timing being off. Your are right, one should just bend the pins to get better contact with the pads on the back of the casing. That's actually what I set out to do. Even though technically my WiFi is now miscalibrated, the fact is that it is a drastic improvement over what it was. I am just trying to show people what I did to fix my problem. I will edit your information into my post and recommend that people try to bend the tabs if at all possible. However, being that my nexus 7 is 1 week old and I haven't even dropped it I am probably not alone with a having a broken tab.
[Nexus 7 General] dottat:
See for me I stopped reading the op when he stated the signal went from -30-40 to -60-70. That statement shows a loss in rf signal.

If you had -30-40 to begin with you wouldn't have any WiFi problems.

Not a good idea to do this mod. Just the soldering and dissimilar metals alone make for impedance mismatches.
[Nexus 7 General] theecatsmeow:
I have that listed the wrong way. I had -60-70 but now I have -30-40. No one said you had to do this mod. But for some like me who have a broken connector this could be helpful. The impedance of air is a lot more than the impedance of lead and copper.
[Nexus 7 General] dottat:
An antenna is a closed loop. Impedance matters !

You would be better off finding the exact part needed for repair.
[Nexus 7 General] swisstourist:
And where you can find these parts?Mr smart pant!
[Nexus 7 General] davidoff59:
Seeing as its so new, what stopped you returning it for a repair under warranty
[Nexus 7 General] nhutquang972012:
I has broke 1 of 2 golden tabs, but i still keep it. How can i reconnect this tab to the Nexus 7? Using glue? Is it a good idea? My wifi is very bad now...
[Nexus 7 General] BrianDigital:
I wonder if the people having issues with wifi, might be due to having to many neighbors broadcasting on the same frequency and many on the same channel.

I recently bought a new wifi router just for this reason (shame the n7 doesn't have duel band, but my n4 does)

This has solved my issue completely, except for YouTube but I am suspecting g that might be out of my hands.

Anyone looking around for a new router I got this one from newwegg

Never heard of the brand but it's been great

http://www.newegg.com/Product/Product.aspx?Item=N82E16833315100
[Nexus 7 General] bftb0:
Possibly - but it's way off-topic for this thread. The OP (and others) did repairs of broken devices where the external antenna was effectively disconnected. Nobody should regard the methods of this thread to be a way of *improving* their signal strength unless they are sure they have a broken device (or are planning on modding their device to add an external directional antenna)

For reference purposes, my (correctly functioning) N7 WiFi + WiFi router exhibit the following line-of-sight signal strength (observed using farproc's "WiFi Analyzer" app on the N7) :

-22 dBm @ 10ft

-33 dBm @ 20ft

The above values are the best-case that I observed; at the same locations I can observe up to 10 dBm attenuation simply due to orientation changes of the tablet. (That is expected as neither the router nor the tablet have isotropic antenna gain patterns - both amplitude and polarization)

The point of this is that even if interference is present, it won't effect the observed signal strength - and nobody should be using the hardware mods in this thread unless their signal strength is terrible - even when very close to the router.

The points made by bigbop earlier in the thread are well worth reading. The mod proposed by the OP should only be used in dire circumstances.
[Nexus 7 General] bftb0:
Yes... "glue" which is made from 100% solder.

What you should try to do is to create a fix that re-creates the missing "golden tab". It needs to be very conductive (that's why most glues are completely out of the question), and it should be ideally no bigger than the original. A very short piece of small wire could be used - emphasis on "short", as in mm, not cm. The further you depart from the original geometry, the worse your fix will be. (But even a bad fix will be better than what you have now - which is no antenna at all).

good luck

[Edit]

Here's an idea that might work - using a Fuzz Button. They have built-in compliancy and are manufactured in a variety of lengths and diameters. I suppose you could even solder the periphery of one to the remaining pad. No clue where to go to buy two or three or a dozen, though. Mouser Electronics maybe?
[Nexus 7 General] nhutquang972012:
I went to welding shop and everything was solved, even wifi is better than before. Thanks for your help.
[Nexus 7 General] BrianDigital:
so i should read those points even though i no plans to hot glue some wires to my tablet. it might be off-topic for this thread, but since someone might read the general "fix bad wifi" topic thought id like to give me experience

can i ask you then why do routers have different frequencies they broadcast on, since everyone can be on one and not cause an issue then

i attached a screen shot, the one at the most left is my original wifi network the one at the most right is the new one, the middle one is my next door neighbor, and it will lower in DB while mine drops spuratically. now my new router is in teh exact same spot as the the old router.

Just saying sometimes some one doesn't need to reinvent the wheel when its not going to help
[Nexus 7 General] bftb0:
I'm not sure what you mean by the first sentence, but I will agree that the thread title is quite misleading, and possibly the reason why the thread got down voted.

@OP if you are reading, consider changing the title to "Broken WiFi Antenna Contacts Fix"

But in fact devices talking to the same router do interfere! A single radio channel is a shared medium analogous to an old-fashioned coax Ethernet or Ethernet hub - a collision segment. There is only a total bandwidth available for sharing amongst all devices on the segment/channel. The only reason that two clients talking to two different APs on the same radio channel is worse than two clients talking to a single AP is that in the single AP case, the clients are better synchronized in time by virtue of sequential ACK packet pacing by the AP (in addition to other AP coordination mechanisms). That coordination does not exit between unrelated APs on the same radio channel. So that's why there are multiple frequencies: to get away from your neighboring APs!

The other thing which is quantitatively different about shared radio channels in comparison to old-fashioned collision segments (hubs/thin-net coax, etc) is that the signal amplitude range in WiFi is huge: -25 dBm to -85 dBm is a factor of one million in signal strength. So, where even a tiny overlap/collision on an old-fashioned Ethernet collision segment would be fatal (all devices are nearly the same amplitude), that's not quite as true with WiFi: if both ends of an AP<->client station see each other at 30dB higher than all other stations on the same channel, so long as the packet has already started, the nearby signals literally smash the far away signals.

I don't doubt that some WiFi routers do a better job of their antenna design / matching than others. The thing to be aware of when making measurements is that RF propagation is a squirrelly thing - it is easy to get a 10 dB change in signal strength without even altering the distance from the AP - rotate your tablet slowly though different axes with that WiFi Analyzer app running and have a look. And of course, huge variations from place to place within your residence. ( If you were seeing BIG drops with your old router - say more than 20 dBm - then either it has hardware troubles, or possibly you are seeing a measurement artifact from non-WiFi radio interference (ISM band devices such as microwave ovens, portable phones etc) )

good luck
[Galaxy S I9000 Themes and Apps] Zkaar:
Can someone make this a bootanimation please?

http://www.youtube.com/watch?v=CT8t_1JXWn8
[Galaxy S I9000 Themes and Apps] Zkaar:
I was able to do one, but either it is too slow or too fast. If I change the number of frames to something that is not 30 the bootanimation stays a black screen. Needs to be 51 frames to be perfect.

https://dl.dropbox.com/u/18184729/bootanimation.zip

EDIT

Also, it loops for 12 times and stops, I've tried setting 0 loops and it simply shows blackscreen. Any other number that is not 12 will render a black frame too.
[Galaxy S I9000 Themes and Apps] Bejda:
Yours didn't worked for me don't know why,i just redone the desc.txt with p 0 0 and rezip the boot,seems ok now ;)
[Nexus 4 General] rderoko:
From day one I had dropped calls, sometimes as many as five in the same 10 minute call ! Considering that my previous phone never dropped calls at my location, I was immediately suspicious. Did the required checks with TMO regarding towers and reception. They sent a replacement phone. Dropped calls were actually worse on the replacement phone. TMO declined any further action, suggesting I should call LG. LG stated categorically that they had no reports of any problems like what I was having.

So I have been forced to return the phone for full credit, reversing the required two year contract and I am back on my trusty Vibrant.

Don't know what I will do now. Unbelievable. Selling phones that don't work as phones.
[Nexus 4 General] sy224048:
No problems here. Running Simple Mobile(Tmobile) in the Dallas area.
[Nexus 4 General] zevim2005:
Very happy with mine!
[Nexus 4 General] TypoCorrecto:
Good to know that T-Mobile service is good in Dallas, I'll be moving there next month. How's data coverage and speeds?
[Nexus 4 General] ehtoeh:
Believe it or not, the I9000 is a solid phone. My Bell Canada Vibrant is still kicking ass with latest 4.2.1 nightlies from the CM team. My daily driver is the Nexus 4 these days. Stock from Google, just boot loader unlocked and rooted. Too bad it didn't work out for you.
[Nexus 4 General] danguyf:
So ONLY YOU out of thousands of phones sold have the problem, and yet you accuse them of creating a phone that doesn't work? Narcissistic much?
[Nexus 4 General] mbucks911:
ive made hundreds of calls with this phone, only like 1 dropped call and i think that might have been on their end. im in a good service area but this phone seems especially good reception wise because i have made calls in spotty coverage areas and they have been great. LG wasnt lying when they said that they dont know of this issue
[Nexus 4 General] Wisefire:
I live just outside Dallas, I get good coverage, a little shoddy at times inside buildings, but never any real problems. Especially as I get closer in to the populated areas where towers seem to be more frequent/powerful.
[Nexus 4 General] rg1003:
There are many things about this phone I am not thrilled with (battery life!) but reception and call reliability is not one of them. It is far better than my previous phone on TMO and better than my work phone (Incredible 2) on Verizon.
[Nexus 4 General] wardy01:
Omg. Why with these pointless threads. I'm no developer or such. But my god.....

Its an android phone that has a lot of techno and great performance. Of course it will not be great on battery . a lot of ppl buying this phone seem to think its the ultimate phone .. Either deal with it or buy a Nokia 3310.....

And the screen scratching and breaking its not indestructable ... It'll protect to an extent .

As for the op blaming his phone out of the bucket load sold.I've not heard of 1 instance (I work in a phone shop ) ... I've had mine since day 1 along with a work colleague.

We both have no yellow tint issue.

No random cracks (that just happen) .

No speaker or mic issue.

I rooted mine straight out the box and running faux kernel and aokp ROM . battery I have just seen my best yet at 2 days and 14 hours.....

Use on WiFi all the time. Moderate net browsing. Ebay.mail. few hundred texts. 25 mins of calls.....

I can't understand why ppl post bad things that effects all new phones, but yet there's threads and threads of this and that. .... Its a phone ...

Op I know you proberly mean well but its just constant now . I use to come on here a lot to see how development and cool new things and new info are in progress. All I see now is

Threads about

This issue .that issue. Oh my screen randomly broke.battery's terrible. Screen is not gorilla glass as it has a scratch.

Any way all the best what ever phone you decide next .

Sent from a perfect n4 x
[Nexus 4 General] obsanity:
You mean you actually dialed a number? How do you do that on android? I can't remember the last time I did that.

Sent from my Nexus 4
[Nexus 4 General] lazinase:
Tmo user in San Francisco says no issue at all.
[Nexus 4 General] estallings15:
Hahaha.

Saved.
[Nexus 4 General] canuckerr:
The only problem I have on my nexus 4 in regards to calls is that sometimes the phone doesn't ring?

I'll dial someone and i'll wait the usual amount of time, but with no ring and all of a sudden a here the person say, "hello".

So the phone is dialing, but there is do ringing? Sometimes it works, sometimes it doesn't. Weird.
[Nexus 4 General] estallings15:
Isn't that on the carrier's side?
[Nexus 4 General] Censura_Umbra:
I call bull. T-Mobile sent a replacement nexus 4???? I know they are supposed to start selling them soon. But this would mean you already bought one from T-Mobile. Then used it enough to know it sucked. Then waited for a replacement... So you bought one from T-Mobile before they announced they were selling it? Or you convinced then to give you a replacement just cause?
[Nexus 4 General] rderoko:
I bought the phone online from TMobile in early December. I immediately had dropped calls. Reported it to T mobile and they told me they were going to send a replacement, which also didn't work. I am not sure why you can't follow this simple explanation. Perhaps you should put down the drink, turn off the porn and try reading, you do know how to read don't you ?
[Nexus 4 General] rderoko:
I never said I was the only one. LG implied that I was the only one when I called them. The two phones I got just didn't work. That's all and that is a disappointment. I am glad that many of you have phones that do work. However there are quite a few that don't for various and multiple reasons. I think your hostility is inappropriate and revealing of a projection from your dark side that doesn't,t belong in this forum.
[Nexus 4 General] ChongoDroid:
This is the best phone for me, I'm in Canada ;)

Sent from my Nexus 4
[Nexus 4 General] avocco:
So because the two phones that you received didn't work, you assume the hundreds of thousands that have been sold also suffer the same problem?

You know it rained yesterday and today? I wonder if that means its going to rain every single day for the rest of my life.

Your logic is flawed son. This is XDA, If there was a widespread problem we would all know. No one keeps quite here.
[Nexus 4 General] :
I never said hundreds of thousands and I don't just read XDA. Perhaps you should broaden your reading as well. And don't ever call me son again.
[Nexus 4 General] xchasa:
A lot of people don't have a life outside of xda mate. And they're all computer engineers too. Rofl.

You're wasting your time.
[Nexus 4 General] :
My friends and I are laughing too.
[Nexus 4 General] eagleeyetom:
Somebody called me? :cowboy:

Closed.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] Krsmqn:
So you have adb installed correctly and you're able to connect to the device USB and read it in your device manager.... correct?

Check under device manager for Kindle Fire. Click and check if it says android adb interface.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
Yes I believe that the ADB drivers are installed on my system. I tried the ones from the "kindle fire abd drivers", "USB_drivers" and the SDK package when following the Amazon guide. But when I connect my kindle to the PC it Auto installs and picks a driver which I found is labeled an MTP driver. The kindle is only list as "kindle" (in lower case) under portable devices in the device manager.

I have tried to update the driver and point the device manager to look at the Kindle fire ADB drivers, USB_drivers or point it to the drivers in the SDK folders.

I have also tried uninstalling the device each time, installing each drivers and reconnecting the device (i have also just uninstalled the device, left it connected and tried to install the drivers that way but no difference) - however it still installs the MTP driver which is automattically assigned. If the devices is connected with each driver and attempting the "ADB Devices" list in CMD prompt the list of devices is empty.

I am unable to access the security options in the kindle as it is a demo unit, if you touch more nothin happenes.

SO in short yes the drivers are on my system but I am unable to force the kindle to use them. I think this is probably to do with the fact that I cant access the security menu (I think ADB is disabled).

The only thing I can think of at the moment is to get a normal Kindle Fire, connect it and install the correct drivers- Unfortunatly I do not have access to another Kindle Fire to attempt this.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
Just now The kindle fire stopped responding when booting up, with a pop up stating Demo mode has stopped responding - with options to wait or close demo mode. I choose close demo mode, but after struggling to boot it fired up in demo mode again.

Anyone know how to force a crash on a kindle fire - this may open access to the security menu.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
Hello again - Just an update in case any of this is useful

if I follow this guide http://xdaforums.com/showthread.php?t=1923010

with this page which is linked there www.jayceooi.com/2011/12/13/how-to-install-kindle-fire-adb-usb-driver/

The unit still installs as an MTP device. The best luck I have had was running the Install_drivers.bat file from the KFU utility which gives me an unsigned driver pop-up warning. when completed the system says it installes the google, INC, (winUSB)androidUSBdeviceclass (12/06/2010 4.0.0000.00000). However in device manager its still listed under portable devices as a kindle using the MTP driver. If I attempt to update and point the unit to the SDK altered files (using above guide) or the KFU drivers, it is still the same.

I am ready to pull my hair out LOL. But I am still pretty sure that the problem lies with not being able to access the security menu on the kindle.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
Hey all another update with a bit of progress but I am stuck

I followed this guide - http://xdaforums.com/showthread.php?t=1830108

and managed to get the Kindle recognised as a Android device after I had installed the google USB drivers

I then updated the drivers in the same way (The only driver it would accept was the one from the Qmenu folders).

Now the device is recognised as a kindle fire - when the window is expanded it states its a Android ADB interface.

I tried the advice in this thread http://xdaforums.com/showthread.php?t=1927710 Bujt I cannot get the device to be recognised as an android ADB composit device.

(still shows as offline or does not appear under the ADB devices command, even though shown in device manager)

When updating the drivers as described in the guide, when I pick let me pick from list of device drivers I do have a "%compositADBinterface%, but no matter what I try once installed the device still reads as a kindle fire => Android ADB Interface. If I attempt the process again the "%compositADBinterface%" is still there.

Any ideas people?
[7" Kindle Fire HD Q&A, Help & Troubleshooting] Krsmqn:
I'm curious as to how you ended up with a demo version.

Open cmd... navigate to sdk\platform-tools\

type adb devices

Does it list a serial number?

Under Device Manager in windows, you should see it listed as Kindle Fire. When you expand that, it should show "Android ADB Interface"

If you see that then adb is installed. You may not be able to do anything without a factory cable. These guys on here should be able help you install a non-demo version on to your device.

Good luck!
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
Hello again - thanks for the reply.

My friend worked in one of the stores that was recently a victim of the recession. I asked him how much they were selling the ex-demo stuff, the same evening he dropped by and handed it to me - He says his manager said he could take it .

Yes in Device Manager now the device is seen as a Kindle Fire and when expanded it states its an Android ADB Interface. I am a noob but from what Ive read so far this means the driver isnt correctly installed. As it should read "android ADB composit device"

Using the ADB devices command , it is blank under the list of devices.

Not sure if this helps, but if I right click the kindle in my computer and look at the properties, I can view the serial number there.

Looking into the factory cable options now :)

Again thanks for the help
[7" Kindle Fire HD Q&A, Help & Troubleshooting] prokennexusa:
stirky,

First, let me apologize for the delay in getting to your issue, we have been working on a new package for the Kindle

which can be viewed here: http://xdaforums.com/showthread.php?t=2096888

Let us know what you think. Now to your problem. We have worked with the demo Kindles, they have security software

to eliminate program installation, even if you allow or turn on "Allow Installation of Programs". I do not understand how

someone what able to breakthrough the block since it is done at the OS Level. Maybe they hacked the Kernel? Anyways,

the task is not easy. What I would do is Fast a new system.img, boot.img and recovery.img using this software:

http://xdaforums.com/showthread.php?t=2096888

If we need to flash the Kernel I will add that functionality too. What this will do is completely remove the Demo and

control/security software and turn the demo Kindle into a regular Kindle. We can ship the required Factory USB Cable

tomorrow. Read the post and send us a PM.
[7" Kindle Fire HD Q&A, Help & Troubleshooting] :
No worries about the delay in getting back to me! I was quite proud I finanlly managed to get it recognised on my system after trail and error.

First Question - I am now assuming that anything I need to do to this unit requires a Factory Cable? Am I correct?

. Now a note - Not sure if this helps. While playing around I did notice this little quirk.

After I had edited the google USB driver as mentioned in the above post, My system first recognised the device as an Adroid ADB interface under abndroid device. While checking back though my edit I noticed that I mistyped Composite. Rectified this and then re-installed as before. Now the devices is rocognised under Andoid Device as an Android ADB Composite interface. I then proceeded to up date the drivers agains from the Qmenu Drivers Folder. This makes the system list the device as a Kindle Fire and under this is states its now just an android ADB Interface.

I then had a brainwave and made an edit of this file and inserted the same edit as the google USB driver. This all installs fine. But still only recognised as an android ADB Interface under Kindle fire.

Does is have to be recognised as a composite device? or is a Andoird ADB Interface suffcient?

I assume I need a factory cable and will get one ASAP if thats the case.