Develop Bugs

Epic 4g Touch inductive charging

Well ... I was scared at first to turn it on but all went well, so I figured I would share.
If you do this yourself you have to be very carefull, the components are a lot more cramped than most.
http://www.facebook.com/media/set/?set=a.10100580041214718.2699333.16714515&type=1&l=2682abf95f
Also a good view if you want to see internals ... not sure if this has been posted yet but I am too lazy to look =0)
I used the palm touchstone and the cover for a palm pre.
Edit :: Pictures were too large, I just linked to a public album, enjoy

Very sweet. I love these kinds of mods.

Very nice. Seems pretty straight forward. I've been wanting to do that for a while but I like my BB warranty...

ManiacMagic said:
Well ... I was scared at first to turn it on but all went well, so I figured I would share.
If you do this yourself you have to be very carefull, the components are a lot more cramped than most.
http://www.facebook.com/media/set/?set=a.10100580041214718.2699333.16714515&type=1&l=2682abf95f
Also a good view if you want to see internals ... not sure if this has been posted yet but I am too lazy to look =0)
I used the palm touchstone and the cover for a palm pre.
Edit :: Pictures were too large, I just linked to a public album, enjoy
Click to expand...
Click to collapse
That is crazy! I ordered the palm pre inductive charging on amazon for $10 dollars 2 days ago, to do the exact same thing.

Good luck! The glass is a bit touch to separate from the outside ... easiest way was to find a place at the glass edge to slip your nail into and patiently work your way around pulling and pushing ... and then make sure you have a nice sharp tip for your soldering iron because it is a VERY tight squeeze ... not just the pins but on the other side of the pin there is also an IC that is close.
It works great ... my only sad thing was that you have to use an AC plug with the touchstone it wont work via USB ... im curious if it would work with those charging mats though. You also should use the 30 gauge wire because it is even tight with that! Let me know if you need anything

What about using flat wiring? It seems like a better idea and it might fit better on that compartment. Of course, there is the issue with cost but it would look nicer.
EDIT: It might be a bad idea if it requires soldering since the cable itself could be destroyed by the heat when soldered to the terminal. From what I see most flat wiring is used in a connector rather than soldered directly to the board.

dont see why not, this was a quick trip to radio shack type of thing =0P
The touchstone wont work off of my laptop USB ... you have to use the ac adapter, but it works perfect in my truck hooked up to my zune FM modulator's usb port ... I'm growing more and more fond of it ... its nice to pick upt he phone for a call and not have to deal with wires ... also the charging stone set in my center console props up the phone very nice for viewing incoming call information or whatever you are using.
The only downfall for me is that when searching about the touch stone it doesn't appear to work with the mA output of a regular USB port ... but it isnt too big of a deal as it is on my desk.

Awesome man, I was thinking about doing this as well. Those pics should save me a bit of time searching for pin outs
Sent from my SPH-D710 using XDA App

Not sure that I'll try this but very cool. Thanks for the pics! Glad people out there are still trying new things.

I have a power matt for my Evo 4g. I used it for about a week then put itnon a shelf to collect dust. It charged my at such a slow rate that it took nearly 6hours for a full charge. With a regular cord it only took 2 hours.. I wonder if they reason power matt didnt make one for this phone is because they charge phones so slowly? I see it as a "cute" thing for a phone but not that functional or worth the $ it costs. HOWEVER! if it charged at the same rate uo 800mAh or so like a wal charger it would be pretty cool. This mod does look bad ass! Do you guys know what the charge rate is? Sweet mod amd keep up the good work guys!
Sent From My Epic Touch 3g

ManiacMagic said:
dont see why not, this was a quick trip to radio shack type of thihttp://media.xda-developers.com/images/editor/menupop.gifng =0P
The touchstone wont work off of my laptop USB ... you have to use the ac adapter, but it works perfect in my truck hooked up to my zune FM modulator's usb port ... I'm growing more and more fond of it ... its nice to pick upt he phone for a call and not have to deal with wires ... also the charging stone set in my center console props up the phone very nice for viewing incoming call information or whatever you are using.
The only downfall for me is that when searching about the touch stone it doesn't appear to work with the mA output of a regular USB port ... but it isnt too big of a deal as it is on my desk.
Click to expand...
Click to collapse
I had a Pre and several touchstones before I had this phone. The touchstone definitely needs 1000 mA (1A) of current to work. USB ports on your computer, and also most chargers, will only output 500 mA. Gotta have that solid juice, mon.

zx3junglist said:
I had a Pre and several touchstones before I had this phone. The touchstone definitely needs 1000 mA (1A) of current to work. USB ports on your computer, and also most chargers, will only output 500 mA. Gotta have that solid juice, mon.
Click to expand...
Click to collapse
What about combining two USB ports? I have seen some mini USB adapters that carry 2 USB connectors precisely for this reason.

Mr. ManiacMagic, you sir get the big balls award for the week.
Nice work!

fenixjn said:
What about combining two USB ports? I have seen some mini USB adapters that carry 2 USB connectors precisely for this reason.
Click to expand...
Click to collapse
ill have to try that out if i ever see one.

rick1908 said:
Mr. ManiacMagic, you sir get the big balls award for the week.
Nice work!
Click to expand...
Click to collapse
lol thanks, thats only cause it worked though ... if i would have broke my phone then id just be a failure!

could we use the battery terms to soldier too ?

jdogg10791 said:
could we use the battery terms to soldier too ?
Click to expand...
Click to collapse
I wouldnt think so. The input to where I soldered to is the same thing as plugging in a USB cable, I think it goes through some conversions b4 making its way all the way to the bat terminal. I guess you would have to check the voltages and current with a multimeter, but I would think they are different. If you can I wasted a lot of time lol.

this actually has me curious i might try it on an old battery/phone ... bc if you can then you would just be able to modify your battery pretty much.

jdogg10791 said:
could we use the battery terms to soldier too ?
Click to expand...
Click to collapse
I don't think this is a good idea since the battery would be charging all the time (no charging limitation/temperature monitoring) and it could lead to overheating the battery/killing it/exploding.

Let us know what u find be I buy the kit
Sent from my SPH-D710 using XDA App

Wireless charging mod.

I cannot wait for the official galaxy S3 wireless charging kit to come out.
I got inspired by the Galaxy mod that was done by using parts from a Palm Touchstone cover.
ww.qianqin.de/2011/09/28/high-waf-inductive-charging-mod/
I am pretty sure, that I don't need to do an intrusive operation as the one in the link - I believe that Samsung made pins ready for it under the cover.
Does anyone know what the two 'pins' that are exposed to the left of the battery are for?
Thanks!

There are countless threads regarding the "pins", wireless charging kits, and that mod.

I have a touchstone. And a back, and would like to see if anyone has applied this to the S3 and made it work
Sent from my GT-I9300 using xda premium

I have a feeling the wireless charging module will interact somehow with the two pins next to the battery. I was planning on attempting this mod using these pins but without a multimeter i am unable to tell whether these pins can be used and which way round to wire them up. If anyone can assist i would be grateful.

BungeBash said:
There are countless threads regarding the "pins", wireless charging kits, and that mod.
Click to expand...
Click to collapse
Yes. Countless threads about the mod for the Galaxy S, but I haven't been able to find anything about pins on the Galaxy SIII.
- Maybe I'm just bad at searching, believe me I have tried!

I also would love to know if and how someone gets their sgs3 working with the palm touchstone! Hope it is not too difficult!

pcyyijb said:
I have a feeling the wireless charging module will interact somehow with the two pins next to the battery. I was planning on attempting this mod using these pins but without a multimeter i am unable to tell whether these pins can be used and which way round to wire them up. If anyone can assist i would be grateful.
Click to expand...
Click to collapse
I have finally managed to find a page that claimt that the two pins next to the battery indeed are for wireless charging.
ww.trustedreviews.com/samsung-galaxy-s3_Mobile-Phone_review
Only problem is, I don't know Trusted Reviews - so I don't know how 'Trusted' they are?
All I need now is to find out which pin is 0V and which is +5V. (I'm pretty sure that the current is the same as the Palm cover provides.

Every accessories are always made for on pin, hdmi,wireless kit etc. Always Samsung market tactics.
I wish you'll do it.

Upper pin is plus, lower minus - and it has also be done!
http://www.android-hilfe.de/zubehoe...-samsung-galaxy-s3-ohne-kabel-aufladen-6.html
I'm also trying to do that, hopefully it works

N23 said:
Upper pin is plus, lower minus - and it has also be done!
http://www.android-hilfe.de/zubehoe...-samsung-galaxy-s3-ohne-kabel-aufladen-6.html
I'm also trying to do that, hopefully it works
Click to expand...
Click to collapse
Yes it works, it will be a little slower, im only seeing 450mah going in as opposed to about 1000mah
But that doesnt matter in the slightest as i mostly charge overnight

that is great news! That does not look too difficult and it looks as NFC is not touched. Just the translation is difficult and not knowing what samsung wireless charging is about.
I also wonder how snug the fit is after adding the magnets from the touchstone back cover?

I will post details soon when i am back home
Sent from my GT-I9300 using xda premium

I'm still waiting for my touchstone and palm battery cover to arrive...

I found this! He looks like he did a great job. I am just curious if he had to solder anything to the phone?
http://www.youtube.com/watch?v=uAqP3T_Mbzg

yes he did, i'm gonna try it with just tape - his solder blobs seems to be huge and because of the the cover makes this bulge... maybe then it will fit perfectly
the samsung wireless charger looks nice but i like the idea with the magnets of the touchstone!

please post pictures and a possible video. This is so interesting!

i'll do as soon i get the touchstone kit and have some spare time to do this (hopefully on sunday...)

what happens when you place an induction charging compatible device on an induction cooking range? Will it charge the battery, or will it overload the circuitry and destroy the phone\battery?

I wonder what happens when you plug in the phone with usb while it's inductively charging.

Zabalba said:
I wonder what happens when you plug in the phone with usb while it's inductively charging.
Click to expand...
Click to collapse
I would think they would work together or one would be disabled by the other. Don't think they would allow both if it could cause damage.
Sent from my SPH-D710 using Tapatalk 2

Sprint's backplate covers the inductive charging leads - Successful Mod!

Which is one feature i really would have liked.. but popping the back open, I see the two leads for NFC, but the two leads near the right side of the battery for inductive charging on the international version is not on the Sprint version.. sad panda face
-- UPDATE -- Successful mod
I had to order a Sprint specific backplate from ebay
So I got the Nexus Wireless Qi Charging Orb.. and I drilled two small holes in the spare Sprint backplate I had.. I then proceeded to use some copper foil, folded it up a few times, and placed them in the hole with the sticky part on the housing. I then made sure the bottom of the folded copper was down enough to make contact with the contacts on the motherboard. Closed it up and then placed the receiver in the holes with the copper foil. Placed on the Qi charger and boom.. Wireless charging..
I did it this way so I can replace the middle housing and it won't look like I modded the phone if I need to take it in for repair.. Also, I can charge it with the Seidio Surface case on.
If the pics don't show up you can go to http://imgur.com/a/CuEE5
Titanium Housing - http://www.ebay.com/itm/OEM-Housing...135?pt=LH_DefaultDomain_0&hash=item2327224ab7
White Housing - http://www.ebay.com/itm/OEM-Housing...686?pt=LH_DefaultDomain_0&hash=item2579c11fd6
Copper Tape I used - http://www.amazon.com/gp/product/B000UZ8SJK/ref=wms_ohs_product?ie=UTF8&psc=1

What was the inductive charging supposed to do?
Sent from my SPH-L900 using xda premium

mrush said:
What was the inductive charging supposed to do?
Sent from my SPH-L900 using xda premium
Click to expand...
Click to collapse
similar to wireless charging, but you lay the phone on a Charing Mat, and without the cords, the phone starts to charge .
Though OP, you're saying that it can't be easily fixed, with a Replacement of the cover? is that it isn't literaly on the phone itself?

Kikoshi said:
similar to wireless charging, but you lay the phone on a Charing Mat, and without the cords, the phone starts to charge .
Though OP, you're saying that it can't be easily fixed, with a Replacement of the cover? is that it isn't literaly on the phone itself?
Click to expand...
Click to collapse
If I understand correctly it's on the phone itself.

Kikoshi said:
similar to wireless charging, but you lay the phone on a Charing Mat, and without the cords, the phone starts to charge .
Though OP, you're saying that it can't be easily fixed, with a Replacement of the cover? is that it isn't literaly on the phone itself?
Click to expand...
Click to collapse
If you see in this picture http://dl.xda-developers.com/attach.../1/6/5/4/0/uploadfromtaptalk1350732279172.jpg you can see two pins on the right of the battery. Those were on the S3 for wireless charging. They are not on the Sprint Note 2

jyan_osu said:
If you see in this picture http://dl.xda-developers.com/attach.../1/6/5/4/0/uploadfromtaptalk1350732279172.jpg you can see two pins on the right of the battery. Those were on the S3 for wireless charging. They are not on the Sprint Note 2
Click to expand...
Click to collapse
Can't see the image :/, wouldn't a replacement cover, add this utility just like the NFC?

Kikoshi said:
Can't see the image :/, wouldn't a replacement cover, add this utility just like the NFC?
Click to expand...
Click to collapse
Think you need the contacts.. or maybe a third party can come up with a solution

Are you saying that only Sprint GN2 version missing it? What about other version, eg international, T-mo and etc.

I dont know about the other versions. I only have the sprint one
Sent from my SPH-L900 using Tapatalk 2

jyan_osu said:
I dont know about the other versions. I only have the sprint one
Sent from my SPH-L900 using Tapatalk 2
Click to expand...
Click to collapse
I have the T-mobile and am about to modify mine for wireless charging just like my Verizon S3 is... It has already been confirmed working so I know that the T-mobile version has the same pins as the International does (which is GREAT) but I think it may require some stronger magnets this time around. LOL

shojus said:
I have the T-mobile and am about to modify mine for wireless charging just like my Verizon S3 is... It has already been confirmed working so I know that the T-mobile version has the same pins as the International does (which is GREAT) but I think it may require some stronger magnets this time around. LOL
Click to expand...
Click to collapse
wow.. so sprint screwed us up all over again with the their own phone mods?... after my 2 years are up.. i think i might take leave.. wtf.

need pics
Kikoshi said:
wow.. so sprint screwed us up all over again with the their own phone mods?... after my 2 years are up.. i think i might take leave.. wtf.
Click to expand...
Click to collapse
I think this can still be done I have to ask some folks I think you can run a connecting line to the battery connections through using copper tape, if this is so we just need someone with electronic know how but google copper tape you will see its thin conductive tape that can lead anywhere Im wondering if this mod can be done that way..
Ps can someone take detailed pics of the back of the phone with cover off, with the battery in and out thanks Im trying to think of a solution

randy2 said:
I think this can still be done I have to ask some folks I think you can run a connecting line to the battery connections through using copper tape, if this is so we just need someone with electronic know how but google copper tape you will see its thin conductive tape that can lead anywhere Im wondering if this mod can be done that way..
Ps can someone take detailed pics of the back of the phone with cover off, with the battery in and out thanks Im trying to think of a solution
Click to expand...
Click to collapse
Here are pics

They are there they moved them up see the connection pos and neg are there just in different places top right next to speaker or is that nfc only someone let me know I don't have the device yet if so maybe you can run two leads from the battery connection pins on the phone but that's just a theory I don't know if the connection will charge your the battery once I get my phone I will attempt to mod with battery connection pin hijack to copper tape to induction coil.
Sent from my SPH-L710 using xda app-developers app

randy2 said:
They are there they moved them up see the connection pos and neg are there just in different places top right next to speaker or is that nfc only someone let me know I don't have the device yet
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
That is NFC. .. on the International and Tmobile ones, they have those and two more to the right of the battery.. if you look on the back cover inside there are two pins for the NFC that connects to the back of the phone in that location.

jyan_osu said:
That is NFC. .. on the International and Tmobile ones, they have those and two more to the right of the battery.. if you look on the back cover inside there are two pins for the NFC that connects to the back of the phone in that location.
View attachment 1432476
Click to expand...
Click to collapse
I'll try the battery connection pins hijack then but I won't be able to until best buy gets the device in so where there's a will there's a way
Sent from my SPH-L710 using xda app-developers app

so, crippled world phone, crippled charging and no SVDO. Anything else to add to the list?

dbpaddler said:
so, crippled world phone, crippled charging and no SVDO. Anything else to add to the list?
Click to expand...
Click to collapse
I dont know but sprint really *ucked this model up if they would have left it alone like tmobile we would have been fine Im looking for a solution to the wireless charging but i dont know if its going to be possible all because sprint wants to be different and difficult. Ive been with sprint for 15 years but my patience is wearing thin.
Im still going to attempt a wireless fix though

whats this need yall help
Can someone help me, I dont have the phone yet so im trying everything in theory, to get wireless charging going. so I have questions!
What is this box
Whats the box for it doesnt look like nfc or a speaker or a microphone so Im hoping its tied to some sort of wireless charging, maybe a cover with the charging pins underneath (wishful thinking)

Personally I think wireless charging is overrated. There's a cable plugged in somewhere to get the pad going. And you can't use the phone while it's charging. Well, inconveniently you can. And it charges quicker via a cable.

Wireless charging confirmed working on our T-mobile S4

Hey guys, don't know if people have done this already, but I just got a T-mobile S4 for testing this weekend and I wanted to find out if the wireless charging port was enabled since I've done the touchstone wireless charging mod on my S3 and note 2.
It was especially a PIA on the note 2 since T-mobile, in all of its corporate and engineering wisdom, decided to disable the feature for the Note 2, even though it was enabled for the S3. So for those of you who don't like to dissemble your new phone and solder on a tiny PCB, you'll be happy to know that I confirmed that wireless charging ports on the S4 is indeed enabled.
I took a pack of 4x AAA battery assembly, which provides ~4.7v of DC power, and connected to the charging port in the back. The small pair on the left is the charging port, the pair on the right is supposedly NFC, even though the NFC antenna is located on the battery for S4.
As you can see from the pics, the "the phone is now charging wirelessly" notification pops up when the circuit is live, which is pretty annoying IMO and can't be disabled (that's why we have custom roms right?)
I haven't gotten a chance to install the actual touchstone wireless charging receivers on the back yet, as this is a test unit that I have to return, but I don't imagine this to be too different than on the S3. There will be a slight bulge, but it'll be worth it.

How do I put this mod in use
Sent from my SGH-M919 using xda app-developers app

Tried it with my Qi charger from Energizer and it's doing absolutely nothing.

RonDigital828 said:
How do I put this mod in use
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Just follow the instructions from this thread (it's for an S3). The design for S3 is pretty similar, so it should work. Remember the positive pin is on the left, negative (ground) is on the right.
Also note that the touchstone mechanism is not Qi compatible, so it wont work with the newer charging mats for Nokia or HTC.
And always remember to perform these mods at your own risk.

mattlgroff said:
Tried it with my Qi charger from Energizer and it's doing absolutely nothing.
Click to expand...
Click to collapse
Did you install any receiver on the S4?
I didn't mean to confuse anyone, I only confirmed that it is POSSIBLE to perform the mod. I used a 4.7v DC power supply to test if the wireless charging pins on the back are live, which wasn't the case for T-mobile note 2 so I had to check to make sure.
If you already have a Qi charger, you can get one of these receivers and connect it to your phone, then you'll be able to charger with your mat
http://www.ebay.com/itm/qi-Wireless...l_Phone_PDA_Chargers&var=&hash=item51abef6de9
But I would argue that the touchstone method is superior to qi if you plan on using it in a car, as the magnets keep the phone in place is it's really convenient to connect/disconnect when you're driving.

ncc1701k said:
Did you install any receiver on the S4?
I didn't mean to confuse anyone, I only confirmed that it is POSSIBLE to perform the mod. I used a 4.7v DC power supply to test if the wireless charging pins on the back are live, which wasn't the case for T-mobile note 2 so I had to check to make sure.
If you already have a Qi charger, you can get one of these receivers and connect it to your phone, then you'll be able to charger with your mat
http://www.ebay.com/itm/qi-Wireless...l_Phone_PDA_Chargers&var=&hash=item51abef6de9
But I would argue that the touchstone method is superior to qi if you plan on using it in a car, as the magnets keep the phone in place is it's really convenient to connect/disconnect when you're driving.
Click to expand...
Click to collapse
I was under the impression the S4 had wireless charging built in, whoops.

Me too!!!
That was a disappointment!!! :banghead:
DEVICES:
NEXUS 7 32GB STOCK
(NO ROOT)
T-MOBIL LG G2X (LG-P999)
STOCK (ROOTED)
Sent from my LG-P999 using xda premium

mattlgroff said:
I was under the impression the S4 had wireless charging built in, whoops.
Click to expand...
Click to collapse
Samsung will be officially supporting wireless charging for the S4 through accessories. The ad for the pad and back wireless charging cover is already listed on the promo S4 accessories page. http://www.samsung.com/global/microsite/galaxys4/
Though there seems to be no price or date yet.
Of course there will be 3rd party wireless charging solutions as well.

ive got a palm touchstone but what receiver do i need to buy to have my GS4 work with it ?
also;
can anyone confirm or deny wether or not the palm touchstone + receiver will trickle charge the GS4 after it is fully charged ? (or does it completely cease charging until the phone is physically picked up and replaced ?)

wavrunrx said:
ive got a palm touchstone but what receiver do i need to buy to have my GS4 work with it ?
also;
can anyone confirm or deny wether or not the palm touchstone + receiver will trickle charge the GS4 after it is fully charged ? (or does it completely cease charging until the phone is physically picked up and replaced ?)
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1877191
the link above is the thread with a tutorial on how to do the mod for S3, should apply to S4 as well.
I can confirm that it trickle charge S3 and Note 2 ( if I understood you correctly, it will keep the phone charged as long as it's on the touchstone base), shouldnt be any different for S4.

ncc1701k said:
http://forum.xda-developers.com/showthread.php?t=1877191
the link above is the thread with a tutorial on how to do the mod for S3, should apply to S4 as well.
I can confirm that it trickle charge S3 and Note 2 ( if I understood you correctly, it will keep the phone charged as long as it's on the touchstone base), shouldnt be any different for S4.
Click to expand...
Click to collapse
ok cool;
but.
i did the mod for the s3....... twice.
it didnt work out; so id rather just buy a pre-made module; do you know what one i can use fro the s4 ?

wavrunrx said:
ok cool;
but.
i did the mod for the s3....... twice.
it didnt work out; so id rather just buy a pre-made module; do you know what one i can use fro the s4 ?
Click to expand...
Click to collapse
I havent tried the premade modules yet, but the do look quite a bit thinner
try this
http://www.ebay.com/itm/Samsung-Gal...S_Cell_Phone_PDA_Chargers&hash=item232a7f9413
yeah it's not the easier mod to do and def took me quite a few tries too

Took the Qi wireless receiver pad from my Galaxy S3, had to slightly tear it apart to reverse the little gold inserts that create the contact points for the wireless battery charging and now have a fully functioning wireless charging Galaxy S4 !
Saved myself quite a bit of money doing that.

alexnader said:
Took the Qi wireless receiver pad from my Galaxy S3, had to slightly tear it apart to reverse the little gold inserts that create the contact points for the wireless battery charging and now have a fully functioning wireless charging Galaxy S4 !
Saved myself quite a bit of money doing that.
Click to expand...
Click to collapse
Can you post some pictures.
Thanks in advanced.
Sent from my SGH-M919 using xda app-developers app

it is not easy for nomal people to change the phone like this. if there's no official support,
most of people will not care that.
although , i like wireless charging very much

michaeljimmy said:
it is not easy for nomal people to change the phone like this. if there's no official support,
most of people will not care that.
although , i like wireless charging very much
Click to expand...
Click to collapse
It seriously only took 5~10 minutes once I'd figured out which way to put what.
I have the photos set up and just need to put notes on them explaining what I did.
Will post them when I get home tonight (12am CT)

Ummmm, from everything I read the pins you have it hooked up to are NOT the ones for inductive charging, the gold ones on the right are......
I could be mistaken however. I remember the s3 used those pins, but I've read in a couple places that the ones made specifically for inductive charging are the ones on the right above the battery.

TeknoGodz said:
Ummmm, from everything I read the pins you have it hooked up to are NOT the ones for inductive charging, the gold ones on the right are......
I could be mistaken however. I remember the s3 used those pins, but I've read in a couple places that the ones made specifically for inductive charging are the ones on the right above the battery.
Click to expand...
Click to collapse
What ARE all the other pins back there for? I figured one set (had no idea which one) was for inductive charging, but couldn't figure a reason for the others..

coyttl said:
What ARE all the other pins back there for? I figured one set (had no idea which one) was for inductive charging, but couldn't figure a reason for the others..
Click to expand...
Click to collapse
the smaller set is wireless charging, the larger set is presumably for additional NFC antenna (although I measured no resistance in the circuit with my voltmeter), as the back cover seemed to have a carved out area for a NFC like the Note 2 did.
Although the S4 battery says "NFC" on it, which seems like samsung made a last minute decision to put NFC on the battery instead of the back cover... oh samsung ¯\_(ツ)_/¯

ncc1701k said:
the smaller set is wireless charging, the larger set is presumably for additional NFC antenna (although I measured no resistance in the circuit with my voltmeter), as the back cover seemed to have a carved out area for a NFC like the Note 2 did.
Although the S4 battery says "NFC" on it, which seems like samsung made a last minute decision to put NFC on the battery instead of the back cover... oh samsung ¯\_(ツ)_/¯
Click to expand...
Click to collapse
Nope, the NFC is in fact in the battery, the same way Samsung has been doing it for years now. They made no change.
Oh false information from people that don't know what they're talking about ¯\_(ツ)_/¯

Qi wireless charger

Hi,
I recently bought a qi wireless charger because my charger port of the phone broke and it's too expensive to fix.
Anyways, yesterday I left it for 2 hours the % went from 49 to 90 which I was quite happy with but I let it charge over night and it only went from 34% to 50%.
I am rooted and on AOSP.
I check the wireless current and sometimes as soon as I put it on the pad it's 1000ma but then it keeps dropping quick to 100ma. The pad as an output of 1000ma.
Csn someone tell me how to fix the slow charge. Thanks
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you're probalby not lining it up properly. that happens when you've misaligned the pad to the charger. find the sweet spot and just remember to place your phone there the same way.
if you're handy,you can probably also come up with a cradle of some sort so the phone falls right in place everytime.

mputtr said:
you're probalby not lining it up properly. that happens when you've misaligned the pad to the charger. find the sweet spot and just remember to place your phone there the same way.
if you're handy,you can probably also come up with a cradle of some sort so the phone falls right in place everytime.
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Click to collapse
I placed mini rare earth magnets under the phone's back plate, just 2 on the top area, and then 2 on the Qi wireless charger so the phone aligns perfectly with the charger, and gets the best charge it can get.. Also I opened up all my Qi Chargers and used my Dremel to remove all the extra plastic, as much as I could to remove any kind of resistance or space between the Tx Coil and the Rx Coil.. I tested the best place they could be aligned with a Multi Meter, and then added magnets.. Works like a charm.. Its a pain in the ass, but mine works out pretty well. I didn't place the magnets on the inside, I placed them on the outside of the charger.. Works well
http://www.ebay.com/itm/271329239542?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT
thats what I purchased..

uh wow... that's seriously overkill but sure.. you can do that..
although i wonder if putting magnets that strong in your phone will mess with your gps and magnetometer.
i would say a small plastic cradle or creating little edges on the transmitter so the phone just physically falls in would be an easier and safer alternative that using a dremel on your receiver.

mputtr said:
uh wow... that's seriously overkill but sure.. you can do that..
although i wonder if putting magnets that strong in your phone will mess with your gps and magnetometer.
i would say a small plastic cradle or creating little edges on the transmitter so the phone just physically falls in would be an easier and safer alternative that using a dremel on your receiver.
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Click to collapse
I would of thought the same thing, but it has given me zero problems when the magnets are set up top.. HOWEVER, when I tried to place 2 near the bottom, it caused all kinds of problems with USB charging and my phone locked up a few times... I'm glad the damage wasn't permanent.. I used my Hotglue gun to hold them into place, the magnetic field caused a short in the Gluegun and it EXPLODED in my hand.. I was lucky enough to drop it right when I heard the sizzle and BANG.. So when playing with strong magnets.. Be careful.
Edit: I also have an external case with the same type magnets, and even with the case on, it doesn't give me any issues, at least any I'm aware of.. I made a magnetic mount on my desktop pc, just for kicks.. But since the case is metal, I can't put a Qi charging coil on it.. Now that would be neat..

yeah.. that's dangerous in general. I honestly would not recommend anyone to do what you did considering you almost ended up with stuff blowing up un your hands.
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The idea behind Qi is simple: all devices with the Qi logo will work with all Qi chargers. That’s it. No need for separate chargers, no need for cables, and no need for adapters when traveling. Qi is a global standard – this means that your device can be charged wirelessly wherever you are.