Hey, I have a fake battery bought from eBay that looks exactly like the original one but it is fake.
The problem is that it doesn't have NFC support. NFC works fine if the original battery is inside.
Since the battery just acts as NFC antenna, maybe it is possible to out something conductive to touch the correct contacts and NFC will work.
Did anyone ever try that? Does anyone know how to do that?
My Gnexi said:
Hey, I have a fake battery bought from eBay that looks exactly like the original one but it is fake.
The problem is that it doesn't have NFC support. NFC works fine if the original battery is inside.
Since the battery just acts as NFC antenna, maybe it is possible to out something conductive to touch the correct contacts and NFC will work.
Did anyone ever try that? Does anyone know how to do that?
Click to expand...
Click to collapse
I searched around, doesn't seem like nothing what you are suggesting has been done; Also, no hits on Google;
I would advise you to simply buy a NFC-capable battery. Messing with li-on batteries is not a great idea, IMO.
But that's not FUN
I'm not going to mess with the internals of the battery, just create an antenna that happens to be glued to the sticker of the antenna but could really be anywhere else.
Update: I did it!!!!!!!!!!!
Pins 1&3 are power, pins 2&4 are NFC (1 is leftmost pin)
I connected a bit of copper wire to each of the NFC pins, and connected them using coil (wrapped 4 or 5 times).
It reads NFC tags very well, the only problem now is I can't close the back cover because of the giant coil. I'll try to find a solution to that and upload pictures (or video), because as we all know "pictures or it didn't happen".
Update: The project FAILED.
I tried to connect the two NFC pins using a coil. When the coil was away from the phone, it worked very well. When the coil was on the phone, it didn't work. Since I wanted to stick it on the battery and be able to close the cover, I must say it didn't and can't work.
The fake battery is blocking NFC signal. If you put the good battery in and then put a tag -> NFC success sound.
If you put good battery in and a tag+fake battery over it -> No sound. Take the battery-> Success sound.
That concludes our experiment.
Real Samsung batteries with NFC are available on Amazon for $8.
+expensive international shipping. I'll stay with one battery that does NFC and one that doesn't, until my next phone.
I'm considering attempting to remove the antenna sticker from my old battery, stick it onto my new third-party battery, and connect the leads to it's pads. Will update if it goes well. Or if it doesn't.
---------- Post added at 12:37 PM ---------- Previous post was at 12:01 PM ----------
Welp, that didn't work.
The nfc sticker on the stock battery seems to fall apart if you try to peel it off.
Related
I have a Samsung Galaxy S3 which depends on the battery with a built in NFC antenna for NFC to work. I am currently using a 3rd party battery that doesn't have an NFC antenna. I would love if there is an option to somehow add an antenna externally, but not through the use of a microSD card if possible. Does anyone have any suggestions? Thanks!
Doubt it. NFC isn't just a matter of adding an antenna afaik.
pcorlatan said:
I have a Samsung Galaxy S3 which depends on the battery with a built in NFC antenna for NFC to work. I am currently using a 3rd party battery that doesn't have an NFC antenna. I would love if there is an option to somehow add an antenna externally, but not through the use of a microSD card if possible. Does anyone have any suggestions? Thanks!
Click to expand...
Click to collapse
It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
JunyuT. said:
Doubt it. NFC isn't just a matter of adding an antenna afaik.
Click to expand...
Click to collapse
I assumed the rest of the required hardware is built into the phone and just the antenna in the battery, but then again the antenna probably needs to receive power so I can see how that would be an issue. Thanks for your input.
TWO515TY said:
It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
Click to expand...
Click to collapse
Okay thanks, it's not too big of a deal to throw in an NFC battery when I need the functionality.
S3 need a antenna?
Sent from my GT-I9300 using xda app-developers app
tuansiro said:
S3 need a antenna?
Click to expand...
Click to collapse
Just as much as any NFC-enabled phone does... You know that the antenna is embedded in the inside of the phone, right?
Damastus said:
Just as much as any NFC-enabled phone does... You know that the antenna is embedded in the inside of the phone, right?
Click to expand...
Click to collapse
Actually on the SGS3 the NFC antenna is in the battery, not the phone.
Sent from my Transformer using Tapatalk 2
Actually I knew that since it was stated in the first post. I consider that still inside the phone.
I thought the user I answered to imagined something like this here as an nfc antenna.
While technically yes, you could make an antenna out of say aluminium foil if you could figure how to cut it so you end up with a tuned antenna, then connect it to the correct pin on the battery connector, I think any sane person would just stick an NFC battery in.
I think they put the antenna in the battery because it's up close to the back of the case. That would also keep it well away from the other antennas that I doubt would like the power pulses that NFC puts out while it's polling.
Oh and Damastus, that picture it hilarious.
I've done the wireless charging mod using Palm Pixi guts. That thin coil of wire is enough to break NFC communication, depending on where it's put. NFC has a VERY short range, so I'm sure it's in the battery to put it as close to potential NFC chips you want to read, and to minimize anything else getting between the antenna & chip (like cases, batteries, etc.)
TWO515TY said:
It would be really be more feasible to just buy a different battery with NFC support. Trying to add an NFC antenna to the phone would be a lot more work than it's worth.
Click to expand...
Click to collapse
On the Nexus S, the antenna is built into the phone's backplate.
In theory, you could buy a Nexus S back, remove that antenna, and put it on the inside of your phone.
Run fine wires from the phone's NFC antenna connections to the antenna, and it might just work.
I'd expect reception to be lousy, since you'll detune the antenna by trying to connect it. This also assumes that the NFC circuitry is in the phone, and the battery has only the antenna.
sysadmn said:
On the Nexus S, the antenna is built into the phone's backplate.
In theory, you could buy a Nexus S back, remove that antenna, and put it on the inside of your phone.
Run fine wires from the phone's NFC antenna connections to the antenna, and it might just work.
I'd expect reception to be lousy, since you'll detune the antenna by trying to connect it. This also assumes that the NFC circuitry is in the phone, and the battery has only the antenna.
Click to expand...
Click to collapse
Or..buy a battery with NFC support..
Sent from my Galaxy Nexus using xda premium
I got my extended battery (4300mAh) with NFC support from a Chinese manufacturer for only $15. I know you have to be careful with those, but this one seemed legit so I took a chance and it works great - last forever - AND has NFC. Here's the one I got: http://www.aliexpress.com/item/NFC-Extended-cell-phone-battery-with-cover-for-Samsung-Galaxy-S3-I9300-4300mAh/577969392.html
just take apart an OEM battery and start playing with it. My guess is what you want to do is VERY doable.
If I recall correctly, the Verizon SGS3 inductive charging back cover has the NFC element on the cover, not the battery.
Sent from my SPH-L710 using xda premium
nerys71 said:
just take apart an OEM battery and start playing with it. My guess is what you want to do is VERY doable.
Click to expand...
Click to collapse
I thought about that but I don't want to waste a perfectly good battery just to try, although it's tempting.
Mutiny32 said:
If I recall correctly, the Verizon SGS3 inductive charging back cover has the NFC element on the cover, not the battery.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
I think you're right, however I'm pretty sure that's what the extra two pins under the battery are for. These pins are only on the Verizon version of the GS3 though, so it wouldn't work for my T-Mobile GS3. Thanks for the suggestion though.
buy a cheapy chinese battery that has NFC and "have at it"
As far as I have known, there is a type of NFC antenna available in the market that can be stuck to the back cover of your Galaxy S3. In this way, you can take full advantages of NFC functions of the Samsung mobile with an alternative mobile battery. However, it seems that most providers like Sunshine Good Electronics Company only do wholesales business on platforms like Globe Resources. You can search it on e-bay, maybe you will be surprised to find on retail seller.
On the inside of the backcover there are 2 little copper pins. Can anyone tell me what they do? Or is this just a way to detect that the back is attached or maybe NFC or wireless charging?
AFAIK, the lower two pins are for NFC.
The remaining two upper pins are for wireless charging. (need compatible back covers)
I bought Verizon G4 yesterday at Best Buy, most importantly for the camera and removable battery, but also because of wireless charging, which I've been using for about a year on my Moto G.
I had to add the coil receiver to the Moto G, and it does a very good job of keeping the phone charged. It's slow, but I work at a desk at home all day, so the phone sits on the charging puck, and speed is not an essential requirement.
I was aware before buying the LG G4 that the back had to be swapped out for a "receiver" back, but I was dismayed to learn that there doesn't seem to be such a thing available, at least here in the U.S. The only charging device available is the circle device, and that's not what I want.
When I got the phone home, I pulled the receiver out of the Moto G and slapped it into the LG G4 and tried to charge the phone. I immediately got a note saying that charging had stopped, and the add-on receiver was incompatible with LG.
So much for that idea. Anybody have any thought on anything other than the circle case??
Enzo
enzo ferraro said:
I bought Verizon G4 yesterday at Best Buy, most importantly for the camera and removable battery, but also because of wireless charging, which I've been using for about a year on my Moto G.
I had to add the coil receiver to the Moto G, and it does a very good job of keeping the phone charged. It's slow, but I work at a desk at home all day, so the phone sits on the charging puck, and speed is not an essential requirement.
I was aware before buying the LG G4 that the back had to be swapped out for a "receiver" back, but I was dismayed to learn that there doesn't seem to be such a thing available, at least here in the U.S. The only charging device available is the circle device, and that's not what I want.
When I got the phone home, I pulled the receiver out of the Moto G and slapped it into the LG G4 and tried to charge the phone. I immediately got a note saying that charging had stopped, and the add-on receiver was incompatible with LG.
So much for that idea. Anybody have any thought on anything other than the circle case??
Enzo
Click to expand...
Click to collapse
A few people on other xda threads are ordering some from aliexpress.com.
http://www.aliexpress.com/item/G4-W...ireless-Charger-Battery-Back/32359379615.html
or
http://www.aliexpress.com/item/Wire...E9aQ2fUoTXld0i5X8eQSvhtz-yu6&cn=9263&cv=15091
are a couple examples. I'm going to wait it out since I don't have a wireless charger anyways and see which one works the best with Verizon G4
Aliexpress has a supposedly compatible sticker that replace the NFC sticker on the battery cover
its also on Ebay
My Phone Not Shown
woozzy101 said:
A few people on other xda threads are ordering some from aliexpress.com.
http://www.aliexpress.com/item/G4-W...ireless-Charger-Battery-Back/32359379615.html
or
http://www.aliexpress.com/item/Wire...E9aQ2fUoTXld0i5X8eQSvhtz-yu6&cn=9263&cv=15091
are a couple examples. I'm going to wait it out since I don't have a wireless charger anyways and see which one works the best with Verizon G4
Click to expand...
Click to collapse
I pinged the link you gave, but it does not list my phone, which is a VS986. I'll have to be more clear on which contacts do, or do not line up with those on the phone.
Enzo
enzo ferraro said:
I pinged the link you gave, but it does not list my phone, which is a VS986. I'll have to be more clear on which contacts do, or do not line up with those on the phone.
Enzo
Click to expand...
Click to collapse
The first link says Verizon on it. while it does not specify the VS986, it looks like it might work. That seller also has a video for their QI charging chip install.
https://www.youtube.com/watch?v=NOxlzQGggXs&feature=youtu.be
Looks Good, I Found Similar On eBay
woozzy101 said:
The first link says Verizon on it. while it does not specify the VS986, it looks like it might work. That seller also has a video for their QI charging chip install.
https://www.youtube.com/watch?v=NOxlzQGggXs&feature=youtu.be
Click to expand...
Click to collapse
Thanks, Wooz, that looks like it will work on the VS986, but this outfit will not take PayPal, but requires a credit/debit card, and I didn't feel comfortable with anything other than PP, so I did not order from them.
I found a new listing on eBay, and ordered from that outfit, also of course in China.
I don't claim any expertise here, but it seems that the sticker needs to pick up the BOTTOM TWO contacts of the four shown to the right side of the battery. The one I purchased ($8.80, free shipping with PayPal) seems to do that. This outfit also claims its sticker contains a chip for NFC, which I've never used and don't feel is a major item just at the moment. However NFC might turn out to be helpful later, although I'm completely in the dark about its methodology.
The link I bought from is [email protected]
I'll add to this info after I receive the sticker and fumble it into the phone, although probably not as adroitly as the guy in the video.
Id like to implement wireless charging to my z3 but i use NFC heavily so the solution zhekazheka came up with wont work for me.
http://forum.xda-developers.com/z3-compact/accessories/hassle-diy-wireless-charging-t3300011
I've found these chips on aliexpress but i cant figure out how they would be installed. I assume you must remove the rear panel.
Would removing the rear panel destroy any waterproofing upon thorough reassembly?
http://www.ebay.com/itm/For-Sony-Xp...C-Wireless-Charging-Sticker-New-/191655739546
http://www.aliexpress.com/store/pro...Charging-Sticker-NEW/1555539_32301299244.html
http://www.aliexpress.com/item/5pcs...48&btsid=5036d756-27a8-4e73-869f-c4dc44d3e1e2
Some of these appear to connect to where the NFC antenna connects, which doesn't make sense for charging.
Here is a link to the teardown
https://www.ifixit.com/Teardown/Sony+Xperia+Z3+Compact+Teardown/35454
https://d3nevzfk7ii3be.cloudfront.net/igi/1w3UdqRLGko3Bl2H.huge
https://d3nevzfk7ii3be.cloudfront.net/igi/K2ibMbqGrXoJBlmH.medium
Any ideas?
Why not try to find a wireless charger receiver with a usb tail long enough so that it could sit below the nfc receiver? The nfc seems to activate anywhere in the top 8 cm of the back of the phone. I don't there's a wireless receiver that could completely cover that much area.
I tried looking for one but i couldn't find it. it would have to be pretty specific to find an extended right angle sticker with the plug in the correct orientation
I got a Qi sticker and some pucks from Amazon for my original G4, and the wireless charging worked fine. Then it bootlooped, so I got a replacement (they sent me a refurb or course) and on the new phone, wireless charging just refuses to work at all. I called back to complain about that and they sent me another refurb, and wireless charging isn't working on this one either. I haven't changed anything at all but the phone itself. They had me keep my back with the sticker still intact, and of course my same chargers. Anyone else have this issue? I guess I'll call them back again, I'm just tired of fighting with them for yet another refurb phone. The only thing I noticed is a weird clicking noise when I put the phone on the puck. I'm not sure if it did that before or not.
Are there wireless charging contacts on the phone main body? Some OEM versions don't have wireless charging.
If the contacts are there, you could try slipping some paper or electrical tape under the contact pad on the back to raise it a little bit to make better contact. If that does not work maybe the sticker needs to be repositioned to align the contacts. Look carefully at the contact pads on the back - you should be able to see where the metal phone contacts are pressing against it. Everything has to be positioned just right to get both charging and NFC to work...
MikeyTG said:
Are there wireless charging contacts on the phone main body? Some OEM versions don't have wireless charging.
If the contacts are there, you could try slipping some paper or electrical tape under the contact pad on the back to raise it a little bit to make better contact. If that does not work maybe the sticker needs to be repositioned to align the contacts. Look carefully at the contact pads on the back - you should be able to see where the metal phone contacts are pressing against it. Everything has to be positioned just right to get both charging and NFC to work...
Click to expand...
Click to collapse
Yes, they're there. They were there on the first phone and the 2 after. I've tried manipulating the Qi sticker, but the exact same sticker worked fine on the first phone, and then not at all on the next 2. I might try a new sticker, but it's just strange.
sinala said:
I got a Qi sticker and some pucks from Amazon for my original G4, and the wireless charging worked fine. Then it bootlooped, so I got a replacement (they sent me a refurb or course) and on the new phone, wireless charging just refuses to work at all. I called back to complain about that and they sent me another refurb, and wireless charging isn't working on this one either. I haven't changed anything at all but the phone itself. They had me keep my back with the sticker still intact, and of course my same chargers. Anyone else have this issue? I guess I'll call them back again, I'm just tired of fighting with them for yet another refurb phone. The only thing I noticed is a weird clicking noise when I put the phone on the puck. I'm not sure if it did that before or not.
Click to expand...
Click to collapse
I've got a similar issue, but with mine, they changed the mainboard and returned it. Is yours a 602 serial # device or are the refurb units which they sent you 5xx? If 602, I'm curious if part of the "fix" involved completely removing the wireless charging capability. I even tried peeling off the Qi sticker and carefully positioning it over the contacts, then putting the cover back on, just in case maybe it was out of alignment - crazy thought since it worked fine before the bootloop/warranty issue. But that made no difference.
sleepy_76 said:
I've got a similar issue, but with mine, they changed the mainboard and returned it. Is yours a 602 serial # device or are the refurb units which they sent you 5xx? If 602, I'm curious if part of the "fix" involved completely removing the wireless charging capability. I even tried peeling off the Qi sticker and carefully positioning it over the contacts, then putting the cover back on, just in case maybe it was out of alignment - crazy thought since it worked fine before the bootloop/warranty issue. But that made no difference.
Click to expand...
Click to collapse
Mine's a 601 serial. I contacted LG directly and they just said "Oh that device doesn't do Qi you need to get the other one" but could never answer why the other one worked fine..
Alright so last night I wake up from this dream. I've got the nexus 5x, and go to best buy. Boom, first thing I see is an nfc enabled wireless charging pad. I buy it, plug it in, my phone actually charges with it. So when I woke up, I was like, "What's stopping that from actually existing?" Nothing. The more you think about it the more it totally makes sense. Okay, so think about it. Your phone's nfc obviously is hooked up somehow in your motherboard and is connected to your battery. Usually the nfc stickers you find on places don't have power hooked up to them, so what's from stopping us on making a second nfc chip that, when it communicates with your phone, sends power instead of data? The power just goes right back into your phone's battery again, from your phone's internal nfc chip. Wireless charging on nfc only phone's. This could help people with more budget based phones to finally have wireless charging, and nfc isn't even expensive anyways. mind blown? or nahhh
Sorry to disappoint you, but it will not work! For several reason
1. NFC is circuitry in the phone is made for small currents.
2. NFC antenna resonates at a different frequency than the WiCh antenna.
3. It would mean a total redesign of the thing (if possible due to physics limitations) and will certainly not be possible to back-port to current devices!
PS: Dreams are easy; engineering is a tad bit more complex.