yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] norcal61:
I recently broke the screen on my 8 GB nexus 7 and replaced it with a new 16 GB model from staples. I unlocked, rooted and rom'd the device out of the box. The first day I had the tablet it made a couple of weird notification sounds and asked me if I wanted to open with either my gmail or my note app. When I choose my note app this is what it read.

bugreport-2013-04-27-02-23-00.txt

nakasi-user 4.2.2 JDQ39 573038 release-keys

(Sent from BugMailer

I also now have a folder on my SD called bug reports with a long copy inside of what looks like gobeldy gook to me. I'll attach a screen shot. On top it reads NvAvpOpen: error opening nvavp device(permission denied) It says this twice. I never had this problem on my old tablet. After this happened twice within about an hour apart I booted into TWRP and fixed permissions. That was day before yesterday. I thought the problem was fixed because all day yesterday and today it hadn't happened. Up until about 10 minutes ago it happened again. I'm not noticing any performance issues. Just getting these random bug reports. I'm running orca stable ROM and the latest Franco kernel. Has anyone else had this problem?

Sent from my Nexus 7 using Xparent Green Tapatalk 2
[Nexus 7 Q&A, Help & Troubleshooting] GedBlake:
BugMailer... that's a new one on me.... but I found this, if it's any use...

http://xdaforums.com/showthread.php?t=1405639

Rgrds,

Ged.
[Nexus 7 Q&A, Help & Troubleshooting] najaboy:
You're accidentally pressing the hardware buttons and generating bug reports. Just go to /system/bin and delete bugmailer.sh.
[Nexus 7 Q&A, Help & Troubleshooting] norcal61:
Wow, thanks for directing me to that thread. All that is happening is that when the volume up and volume down button are pressed together at the same time it generates a bug report for personal reference. Lol. The first two times it happened I had the tablet in my pocket so that explains that. And the third time I was moving the cursor with the volume button and must have accidentally hit both at the same time. The only thing I don't get is why is this happening so often on this tablet and never happened once in the 8 mos that I had my old tablet? Must either be that the volume buttons are more sensitive on this unit or that the feature wasn't present on my original 8 GB model.
[Nexus 7 Q&A, Help & Troubleshooting] GedBlake:
Yep. I can confirm the existence of such a file... on my Nexus 7... and very illuminating it is to! Worth a read.

http://dl.dropboxusercontent.com/u/37483979/bugmailer.sh.txt

Rgrds,

Ged.
[AT&T Samsung Galaxy S 4 General] Bjray:
I'm modding the S4 to work with the Palm touchstone wireless charging dock and found out that even without modding the phone the touchstone has pretty strong magnets that hold the phone all by itself. When I get some copper tape I'll finish the mod and show my results.

If you have the touchstone you can use it as a magnetic dock like I am currently. It's pretty cool, also it holds the phone pretty strongly, In fact I can use the phone while it's on the dock. Even when charging (usb cable connected) it still holds the phone nicely...
[AT&T Samsung Galaxy S 4 General] jaltman:
I'd like to see your mods to the coil. I was playing with a spare coil and trying to figure out how to position near the bottom and make the electrical connections.

Thanks.
[AT&T Samsung Galaxy S 4 General] morbidz:
<<-----runs to amazon and orders the touchstone :)
[AT&T Samsung Galaxy S 4 General] hamzer11:
Do all the Palm touchstones use qi technology or is that what you're modding. I have already ordered the module from wiqiqi for the S 4 for $25 bucks but didn't like the big flat plate they sold. This would be a great alternative for work.
[AT&T Samsung Galaxy S 4 General] jaltman:
No, the palm is not QI. You will not be able to mix and match coils and chargers.. The Palm coil and Touchstone only with work together.
[AT&T Samsung Galaxy S 4 General] didi111181:
i´ve done it last year with the S3 and Note 2. Now i did it with the S4 and it works like a charm :)

Here are my Pictures.
[AT&T Samsung Galaxy S 4 General] dannclose:
great work! Which of the terminals is positive and negative, and also, which ports do you connect
[AT&T Samsung Galaxy S 4 General] didi111181:
i used .the left connector´s. It was more luck that it works because i don´t know why there are on the right side another connectors .

I couldn´t say which one is the positive and which is nagative because i didn´t test it. I´ve connect it like on my pictures and it work´s.

I´ve used the left connector´s because they are the same then on S3 and Note 2. I think the right connector´s are for NFC because the original Samsung Cover is "extreme" fat ;)

With my solution there is a little camber in the Battery Case and nothing else. That means that you can use any nice thin Protection Cover for the S4 and it charges through the Cover.
[AT&T Samsung Galaxy S 4 General] sixpoint1:
That looks really nice.
[AT&T Samsung Galaxy S 4 General] lambstone:
Did you do any soldering?
[AT&T Samsung Galaxy S 4 General] -beluga-:
Very cool. How effective is charging with this? How long does it take? Thanks.
[AT&T Samsung Galaxy S 4 General] -beluga-:
Sorry to PING again but it's been over a week...

Could one of you guys who did this DIY hack please just tell the rest of us the polarity of the contacts?

Really appreciated! Thanks!
[AT&T Samsung Galaxy S 4 General] dmaul9:
The left one is positive and the one closest to the camera lens is negative.
[AT&T Samsung Galaxy S 4 General] -beluga-:
And... it works! Thanks a lot! :)
[AT&T Samsung Galaxy S 4 General] dmaul9:
No problem!!!
[AT&T Samsung Galaxy S 4 General] livewire195:
I'm just getting into the boards, and was wondering how you determined that.

I bought a volt meter, and just looking for some tips! Thanks!
[AT&T Samsung Galaxy S 4 General] dmaul9:
I just went and looked at several post. I did not use a volt meter
[AT&T Samsung Galaxy S 4 General] murrowxda:
I did the same thing... Just waiting for my qi receiver to be shipped so I can use it with my Nexus 4 wireless charger
[AT&T Samsung Galaxy S 4 General] williamturton:
Woah! This is awesome. Be sure to post a guide when you are done ^.^

Thanks.
[AT&T Samsung Galaxy S 4 General] wgdains:
Hmmm.. This is interesting. Definitely something here.. If you posted a guide, that would be much appreciated (;
[AT&T Samsung Galaxy S 4 General] okrk:
I am curious did you get the charging coil from the Pixi back cover for the s4?

Also how do the charging and magnets work with a case on the S4?

Thanks
[AT&T Samsung Galaxy S 4 General] polish_pat:
there are already made kits for the S4 that you can buy in ebay for under 10$. I wanted to get it but someone hinted you needed a modded back door, is it true it can you just use the stock one?
[AT&T Samsung Galaxy S 4 General] Thatoneguy.:
I did this mod to my girls s4 using a ready to go insert from eBay, and the coil from a Palm on mine, with rare earth magnets on both to improve the grip on the touchstone. Both work perfect with wireless charging, for cases she's using a bumper and I'm using an s view case, I haven't been able to get a solid connection using any case yet, tried ballistic, speck, and otterbox, even putting the coil inside the case with copper tape going behind the back to the terminals. It'll start to charge in most cases, but the thickness of the cases causes it to constantly disconnect/reconnect.

I hope this helps anyone else using this mod!
[AT&T Samsung Galaxy S 4 General] -beluga-:
Please post a link as the cheapest I see are 30 bucks.
[AT&T Samsung Galaxy S 4 General] -beluga-:
Update:

Looks like NFC ain't working for me with the coil installed. I cut the wires short and don't have space to play with it right now but if I find the time I'll see if it can be moved or the overall size reduced so it doesn't interfere.

Those looking for a guide - besides what was kindly posted on page 1 of this thread (...) the mod is identical to what is well documented all over the web for the Galaxy S3 except for the location of the phone connectors, as discussed in this current thread.

I did a G+ post once I had it working that includes a pic and shows how simple it is (I don't want to duplicate posts all over and don't think this link violates XDA terms but if it does, someone please give me a heads up and I'll remove it):

https://plus.google.com/u/1/106537493365741223530/posts/YbnuWiue1dL
[AT&T Samsung Galaxy S 4 General] Nick James:
What about this guy-

http://www.ebay.com/itm/New-Samsung...t=LH_DefaultDomain_0&var=&hash=item4d0cc848e0

Is this something that would work even through an OtterBox case?
[AT&T Samsung Galaxy S 4 General] Thatoneguy.:
Probably not, I tried a similar insert and couldn't get it to work
[AT&T Samsung Galaxy S 4 General] -beluga-:
Alright, I fiddled some more and got NFC to work - there is an updated pic on G+ https://plus.google.com/u/1/106537493365741223530/posts/YbnuWiue1dL

Essentially the coil needs to be pushed as far upwards as possible since the NFC element seems to be on the bottom of the battery.

The caveat is it now doesn't stick nicely to the Touchstone charger but is easier to slide off. Oh well...

Re: ebay - it's $35 for the back alone and complete Touchstone sets are 50 bucks. I don't think there is a point spending that amount of money on a pre-assembled Touchstone configuration but only for DIYers who get the material cheap (I paid $7.50 on ebay)

On the other hand a Qi standard compliant setup incl charger seems to run around $40 on ebay right now so I'd go with that instead...
[AT&T Samsung Galaxy S 4 General] bookmonke:
This looks like the full setup and good price and if you want buy an extra and send to me, lol.

http://www.ebay.com/itm/New-Palm-Pr...S_Cell_Phone_PDA_Chargers&hash=item3f226900aa
[AT&T Samsung Galaxy S 4 General] sinebubble:
Troubleshooting

I bought the Palm induction coil with an S4 back and a touchstone charger off eBay. Put it all together and ... nothing. It doesn't charge.

The touchstone charger didn't come any cables, but I swapped around with various USB cables and wall chargers (HTC, Samsung, etc.), but no love. Should this just work or is there a setting I need to configure?
[AT&T Samsung Galaxy S 4 General] Thatoneguy.:
Should just work. I don't have an official touchstone cable, so far every cable I have that fits in the touchstone has worked. I'm currently using a blackberry charger at work and a Motorola charger at home with a touchstone, and an nexus 7 chargerhas also worked.
[AT&T Samsung Galaxy S 4 General] -beluga-:
Yup, that's like what I got and ripped apart to extract the induction coil.
[AT&T Samsung Galaxy S 4 General] sinebubble:
Does the touchstone base vibrate or emit any sound when it's working or receiving power?

I just pulled the trigger on another charger from ebay. Hate to throw more money at this, but another charger is cheaper than the coil/cover.
[AT&T Samsung Galaxy S 4 General] -beluga-:
Nope, it doesn't indicate operation. I'd guess the custom back is more likely the source of your problems. The Palm charger is a fairly simple solid device without moving parts. Did you check the pins of the cover if they make contact with the phone connectors? If you have a volt meter just put the cover on the charger and see if something comes out. Anyway, the #1 reason for the charger not working is said to be the power adapter - and make sure it's pushed all the way into the charger. Also move the phone around as it's not charging in just any position.
[AT&T Samsung Galaxy S 4 General] livewire195:
I was able to create this with very thin wired soldered.

I'm not soldering pro, actually just learned with this mod the basics.

Photos:
[AT&T Samsung Galaxy S 4 General] -beluga-:
Is your NFC working with this setup?
[AT&T Samsung Galaxy S 4 General] livewire195:
Yes it is. No issues :)
[AT&T Samsung Galaxy S 4 General] sinebubble:
FYI my issue turned out to be a bad charger bought off ebay -- an open box (actually no box) disaster. The wireless receiver from hkrc is working fine.
[AT&T Samsung Galaxy S 4 General] socalwrx:
So does this mod work with a case on?
[AT&T Samsung Galaxy S 4 General] sinebubble:
I have the Spigen ultra fit slim case and the touchstone does not charge through it. If I recall, the magnets didn't work very well through the case to hold the phone on the touchstone. It's a thin case, but it's also very hard plastic, so that may be why it didn't work.

The receiver solution I bought works pretty well and the touchstone chargers are cheap enough that I bought several to place at home and at work. There is a bulge at the end of the Samsung logo on the case that is caused by large connectors that would be better placed in the depression next to the sd card slot. I believe some QI solutions move their chips/connectors to that space as well. If that was done and the bulge reduced, the solution would be nearly perfect. But as it is, I'm pretty happy with the everything. Again, I chose this over the QI platform due to the cheapness of the touchstone transmitters and the fact that they are angled, allowing me to see the clock in daydream mode during the evening. The expensive and flat QI chargers do not provide this.
[AT&T Samsung Galaxy S 4 General] tazania:
Hi guys. I tried to put directly on rear pins 5v (left +,right -). But I have seen that the gs4 doesn't start charging but it uses directly energy from dc supply. Are there someone can try and confirm this?. I want to know if it is a problem of my cell phone or charging by rear pins works only with a qi pulse. I m developing a solar charging system. Thanks
[AT&T Samsung Galaxy S 4 General] mk94:
i have gotten to the point where i have the coil working and attached on the back cover. i check the voltage and it reads 5.46 volts. but when i put the back on the phone which i used copper tape to make a connection to the pins, i get nothing. i cant figure out why this is happening but i am currently on cm10.1 so cud that be the issue? are the pins only supported on the stock rom?

EDIT- I got it working! turns out the copper tape inst conductive on both sides. its working great now and i can even charge through my case. i have a ZooGue and a cheap ebay tpu case. also i have an otter box commuter and when i try it, the charging is on off every second so it does detect it but just not enough.
[AT&T Samsung Galaxy S 4 General] MrKal_El:
Loving this...cant wait to try it...
[AT&T Samsung Galaxy S 4 General] starmanj:
I got my palm kit off ebay. But when I place the coil on the baseplate, voltage jumps around between .3v to 1.5v randomly. Is this a bad baseplate or coil electronics? Is there a way to reset everything?
[AT&T Samsung Galaxy S 4 General] davin1023:
Ok folks, I got one of the pre build units from ebay and a few touchstone chargers. The only problem is that with it installed and plugged in I never get the popup and never get a charge. I've verified that it is installed correctly and that the contacts are touching. Any ideas on what I am missing?
[AT&T Samsung Galaxy S 4 General] sinebubble:
Davin, my first experience with the touchstone was frustrating as well. Turns out my touchstone was defective. Luckily I had ordered a spare from another supplier, and so was able to use the second to confirm the original was bad.

I also had an issue with USB cables. Not all USB cables carry the same voltage. If you dig around this site, you might find a posting that goes into the subject deeper, but just know that some USB cables will not charge your device through the touchstone. If you have an OEM cable with your phone, try that. I ordered an iFrogz USB cable from Amazon (orange for $6.50) and that also works, although they tend to be on the shorter side.

Finally, you really have to position the phone just so for the wireless charging to kick on. Nudge the phone around a bit until you find the sweet spot. It can also find an annoying spot that will cause the "wireless charging" alert to kick on over and over again. Drives my wife nuts. Keep nudging it until you get it right.

Good luck!
[AT&T Samsung Galaxy S 4 General] sbddude:
I did this modification last night, and found the magnet placement is very important. I actually had to reposition the magnets a couple times to get it just right.

once its all positioned correctly it works pretty well, although the charging rate is much lower than with the cable. I don't mind for charging overnight or topping off at my desk at work.
[AT&T Samsung Galaxy S 4 General] davin1023:
Interestingly enough it WAS the USB cable. I just assumed since the cable charged fine regularly it would work.
[AT&T Samsung Galaxy S 4 General] sinebubble:
Glad to hear it was a simple and cheap fix!
[AT&T Samsung Galaxy S 4 General] Android300ZX:
I purchased the eBay kit and it is working great. It does seem to charge a bit slower. It could just be me though.
[AT&T Samsung Galaxy S 4 General] jhun80:
Mine keeps saying "wireless charging" ON and OFF, its like toggling, any experience on this?
[AT&T Samsung Galaxy S 4 General] sinebubble:
Yep, from what I can tell, it's just not quite on the charger perfect. I usually just pick it up and place it back on the charger, rather than nudging it around. It's frustrating and some nights are worse than others.
[AT&T Samsung Galaxy S 4 General] -beluga-:
That's where the magnets come in. If they are installed correctly it will pull the device into the correct position. More or less anyway...
[AT&T Samsung Galaxy S 4 General] sbddude:
Definitely due to alignment. i had the same issue. I removed and re-did the magnets and it is now much improved.

Make sure the magnets are the correct polarity. If they are flipped, then the magnet will stick to the wrong spot on the touchstone.
[AT&T Samsung Galaxy S 4 General] jhun80:
The four magnets around the coil? still the same thing, I already removed 4 magnets.
[AT&T Samsung Galaxy S 4 General] tzuik:
How many amps is the charger rated, I can't find any specs for that touchstone? For fast charge with USB cable you need a charger with at least 2 amps, either the original one or one with modified resistances between D+ and D- pins to tell the SGS4 it's a fast charger (2x82k). Is there a way to do that with inductive coils? I see at wurth they have coils with up to 13A induction current, but can the phone draw 1.9A?

Cheers,

Tzuik
[AT&T Samsung Galaxy S 4 General] sbddude:
Wireless charging will always be slower due to the conversion losses. The electricity is being converted into a magnetic field and back again. Even with a 2A charger.

If i need to charge fast, I plug in. For overnight charging and top-up when I'm working at my desk, it works fine.
[AT&T Samsung Galaxy S 4 General] Android300ZX:
Just an update. Still working great. I bought two TouchStone's (Office and Home) and they work great. I do plug it in directly if I need a faster charge but for regular charging (BT use, etc) it works great.
[AT&T Samsung Galaxy S 4 General] Android300ZX:
Update:

I have noticed that my phone is turning off by itself. I'm noticing this when I plug in my phone to my car charger. I will look at it and it would be off. It's not happening when on the Touch Stone. I will test a different car charger and see if it does it again. Could the back cover have something to do with why it's turning off. I'm also going to do a master reset.
[AT&T Samsung Galaxy S 4 General] quarlow:
Anyone tried this with the TouchPad version?

That one should charge at 2A instead of 1A for the Pre. There are no magnets from what I understand, but it has a lip at the bottom to hold the device. There may even be two induction coils inside because you can charge it in either orientation, and it doesn't overlap where it sits.

I've had a TouchPad for two years, and have been letting the 3 and 8 years old play with it daily for a year. Ever since I got my Note II. I have been waiting for it to get a shattered screen or otherwise die. So I can take it apart and try this mod. Now I have the S4, and that damn tablet won't die. Still getting 8 hours of child abuse daily. Guess I should be happy it has held up, but darn it, I want that convenient charging on my phone.

Sent from my SAMSUNG-SGH-I337
[AT&T Samsung Galaxy S 4 General] Android300ZX:
Update:

I have confirmed that the modded back cover I purchased on eBay is causing my random reboot/shut down issues. I have been able to replicate this issue on multiple occasions.

Occasion 1:

If I use a car charger the phone will shut off by itself.

Occasion 2:

Once the phone is off I attempt to turn on the phone and it gets stuck on the white screen with the AT&T logo. It will continue to stay there even after several attempts of holding down the power button and trying to power it on again.

Fix:

If I remove the back cover (the modded back cover) and remove and insert the battery the phone will boot up completely. I can then install the back cover but throughout the day it will randomly shut off.

Anyone else having this issue?
[AT&T Samsung Galaxy S 4 General] sinebubble:
I have had hangs during reboots (every third) that require a battery pull along with random shutdowns/reboots, but I chalked that up to Cyanogen. It's not frequent enough for me to draw any connections, unfortunately.
[AT&T Samsung Galaxy S 4 General] Android300ZX:
I did a Master Reset today and will monitor it closely. It was beginning to frustrate the hell out of me. I'd be in my car wondering why X person didn't call me back and then look at my phone and it's off. I'm going to contact the eBay seller and see if they would honor sending a replacement back cover.
[AT&T Samsung Galaxy S 4 General] sbddude:
Is this a homemade cover? Sounds to me like a short somewhere.
[AT&T Samsung Galaxy S 4 General] Android300ZX:
I bought it on eBay from a reputable seller.
[AT&T Samsung Galaxy S 4 General] Epiclectic:
Adding metal disc for vertical car mount..?

Hey, I am modding a S4 for touchstone charging while mounted vertically in my car... so I need to add some metal or magnets to the battery cover so it holds the phone to the dash in the car. I have a touchstone coil card from ebay (made for the S4 charge points), so here's what I'm thinking:

1. use double side tape to attach coil card to the inside of my S4 battery cover (after confirming alignment of charge pins)

2. tape a thin metal circle (1.75" diameter , cut from an altoids can) to the coil card center, so the metal circle, coil card, and battery cover are all one flat piece.

3. Put cover on phone and phone on touchstone.

Since the touchstone has -some- grip on the S4 already, I'm hoping this extra metal will increase grip for vertical hold over speed bumbs/potholes, while not disrupting the magnetic field between the phone's coil and the touchstone's coil (since it sits between the battery and phone coil, not between the 2 coils like a metal battery cover would.)

If this mod isn't to thick , and the battery cover snaps on properly, should I be concerned about temp rise or fire risk? or would it charge slower from the metal proximity? Fishing for advice and theories, any input from modders helps.

THANKS!
[AT&T Samsung Galaxy S 4 General] -beluga-:
Mine doesn't get too hot. I'd be more concerned about it having a good enough grip to not fall off.

I think I've seen some Qi car gri/chargers someplace. Maybe have to go that route if it doesn't work out...
[AT&T Samsung Galaxy S 4 General] Epiclectic:
Yeah, I looked at Qi, but none of those have a magnetic mount, so you have to add magnets to the Qi puck AND the phone. Also, touchstone users report faster charging than Qi, and the touchstone was only $8. ;)

I will be mounting the touchstone on a proclip/panvise type mounting plate, so it will be a part of the dash. I'm more concerned about the phone holding to the touchstone and the metal mod not causing issues with charging.... anyone tried anything like this? lol
[MDA, XDA, 1010 Software Upgrading] tecumseh:
Now I use the T-M 40016rom. and I know nothing about the SD card flash xda rom.

help me!