[MOD] T-Mobile Note 2 wireless charging mod

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vinas1

vinas1

Senior Member
Jan 29, 2011
226
69
Detroit
farfromovin said:
Please do. I might do the same thing... I have lots of touchstones and a couple Note2's that need some inductive lovin'!

Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
Here ya go! Keep in mind that this is my wireless volt mod (as in, the way I did it) and as such, any improvements are welcome! I'm very happy with the mod so far. The phone did a full charge over night with no problems. It was very nice just to pick it up off the touchstone this morning! But as usual do this at your own risk! The person doing the mod should be reasonably proficient at soldering small joints. Just be careful and this will work for you. Instructions are on the JPG! Any questions please ask! Verified working on the stock kernel and stock charger. :good:
 

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farfromovin

Senior Member
Aug 15, 2011
2,105
459
Oxnard, CA
Vinas, do you use battery monitor pro or have other software to tell you charging current? Also are you using Perseus's kernel? Should up charging rate from about 350-500 ma to 900 ma.

Sent from my SGH-T889 using Tapatalk 2
 
vinas1

vinas1

Senior Member
Jan 29, 2011
226
69
Detroit
farfromovin said:
Vinas, do you use battery monitor pro or have other software to tell you charging current? Also are you using Perseus's kernel? Should up charging rate from about 350-500 ma to 900 ma.

Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
Great point, yes I'm using Perseus's kernel with this. I was at about 40% last night and woke up this morning with 100%. I'll check out the charging current - I have a full charge now so give me like 14 hours (ha ha)! :laugh: One interesting thing to note (no pun intended) is that I was having a problem with non-oem chargers. It seems like the charger needs at least 750 milliamps of output to work - the OEM charger has 2 amps. The OEM part number is ETA-U90JWE. I have some crappy blackberry chargers that are hit or miss - my samsung 750milliamp works and so does the OEM like I stated before.
 
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farfromovin

Senior Member
Aug 15, 2011
2,105
459
Oxnard, CA
Does it start indicating charging immediately or does it take 5-10 seconds to register like my Galaxy Nexus did?

Sent from my SGH-T889 using Tapatalk 2
 
P

perryh1

Senior Member
Feb 28, 2011
134
36
kanata
vinas1 said:
Here ya go! Keep in mind that this is my wireless volt mod (as in, the way I did it) and as such, any improvements are welcome! I'm very happy with the mod so far. The phone did a full charge over night with no problems. It was very nice just to pick it up off the touchstone this morning! But as usual do this at your own risk! The person doing the mod should be reasonably proficient at soldering small joints. Just be careful and this will work for you. Instructions are on the JPG! Any questions please ask! :good:
Click to expand...
Click to collapse

what size and type of wire did you use?
thank you
 
J

jpeps3

Senior Member
Apr 5, 2011
703
67
Do y have a pic all ready connected
And chargeing
Or more pics were did y get the parts from...? Very cool mod

Sent from my SGH-T889
 
vinas1

vinas1

Senior Member
Jan 29, 2011
226
69
Detroit
perryh1 said:
what size and type of wire did you use?
thank you
Click to expand...
Click to collapse

I used the smallest wire I had which was about 26 Guage. I salvaged the wire from a micro usb cable that I was using to test this mod. Afterwards I realized I could have used copper conductive tape. If I were to redo the mod i'd probably use the copper tape instead.
At the time I was worried about shorting other components, so I opted for super thin insulated wire.




jpeps3 said:
Do y have a pic all ready connected
And chargeing
Or more pics were did y get the parts from...? Very cool mod

Sent from my SGH-T889
Click to expand...
Click to collapse
If I get a minute to tear down my phone again I will. It's been sitting apart more than together during the last day... The parts I used were salvaged from a micro usb cable for the wire, and I used a thin piece of plastic to wedge the usb compartment down. The plastic bit I used was rectangular and about as thick as a credit card.

Edit: Pics attached of the wire and plastic piece I used.

Sent from my SGH-T889 using Tapatalk 2
 

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farfromovin

Senior Member
Aug 15, 2011
2,105
459
Oxnard, CA
I'm assuming you used some N52 magnets perhaps, maybe 8 of them? Glad to hear you used 26 ga cause I got copper tape and 30 ga wire ready to go. I think I'll use the wire to avoid shorting as well.
 
vinas1

vinas1

Senior Member
Jan 29, 2011
226
69
Detroit
farfromovin said:
Vinas, do you use battery monitor pro or have other software to tell you charging current? Also are you using Perseus's kernel? Should up charging rate from about 350-500 ma to 900 ma.

Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
I just tested the stock kernel again and can confirm that the disconnect problem with weaker chargers is not present. It seems that the higher charge rate in the Perseus kernel causes the weaker micro USB chargers to disconnect. The OEM charger works just fine, but due to the higher charge rate and the palm touchstone, it seems that the lesser amperage chargers can't keep up. The symptom when this happens is: set phone on palm touchstone, USB connects and disconnects over and over again. Again, not a problem on the stock kernel.
 
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vinas1

vinas1

Senior Member
Jan 29, 2011
226
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Detroit
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jpeps3

Senior Member
Apr 5, 2011
703
67
Relly slow change
Can't you use cord it come with and open the cable use the wire

Sent from my SGH-T889
 
T

Turbo4V

Senior Member
Jun 17, 2009
156
9
Just wanted to say thanks to Vinas1 for your work on this, and for posting up the pictures! I was hoping that I wouldn't have to crack the case open, but it'll be worth it in the end!

Thanks again!
 
D

degeneration

Senior Member
Jul 16, 2010
341
35
Seattle, WA
I like what's been done in this thread, but I want to wait and see if there is something more... direct to solve our problem I guess. However I guess there's a chance that this will be the best we get. Poops.
 
F

farfromovin

Senior Member
Aug 15, 2011
2,105
459
Oxnard, CA
degeneration said:
I like what's been done in this thread, but I want to wait and see if there is something more... direct to solve our problem I guess. However I guess there's a chance that this will be the best we get. Poops.
Click to expand...
Click to collapse

I think the only other option is to swap hardware with one of the other Note2 variants that have complete wireless charging hardware.

Sent from my SGH-T889 using Tapatalk 2
 
vinas1

vinas1

Senior Member
Jan 29, 2011
226
69
Detroit
degeneration said:
I like what's been done in this thread, but I want to wait and see if there is something more... direct to solve our problem I guess. However I guess there's a chance that this will be the best we get. Poops.
Click to expand...
Click to collapse
Agreed.

At this point my contribution to this thread is the workaround I documented. After spending several hours with the circuitry of this device, I could _not_ prove that there is wireless charging hardware missing. Judging by the sprint photos, there is a chip nearby that is not present in T-Mobile's version BUT when I tested the contacts, they each had different resistances across them (directly across to each other); which my best guess, was that the connectors for the missing chip are for some kind of channels or something - not necessarily a wireless charging circuit. So I am still hopeful that software can make this work without the work around. My motivation was to use the 3 touchstone chargers I bought before testing, and now I am although it took a lot more work than the international version! ~ :laugh:
 
M

mehrabrym

New member
Nov 13, 2012
3
0
I am a newb

Hi all, I am kind of new to this kind of hardware modification to my phone, and so I was wondering if taping the wires to connect them would work just as well without soldering them?
 
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    vinas1
    vinas1
    farfromovin said:
    Please do. I might do the same thing... I have lots of touchstones and a couple Note2's that need some inductive lovin'!

    Sent from my SGH-T889 using Tapatalk 2
    Click to expand...
    Click to collapse
    Here ya go! Keep in mind that this is my wireless volt mod (as in, the way I did it) and as such, any improvements are welcome! I'm very happy with the mod so far. The phone did a full charge over night with no problems. It was very nice just to pick it up off the touchstone this morning! But as usual do this at your own risk! The person doing the mod should be reasonably proficient at soldering small joints. Just be careful and this will work for you. Instructions are on the JPG! Any questions please ask! Verified working on the stock kernel and stock charger. :good:
    View
    6
    vinas1
    vinas1
    This is a fork of the original N7100 Note 2 wireless mod thread found here:
    http://xdaforums.com/showthread.php?t=1951493

    The purpose of this thread is to determine why the wireless charging pins on the T-Mobile Galaxy Note 2 (SGH-T889) are not working after installing the MOD above.
    Please view the thread above for more details about the original MOD, and to see what you need to do first in order to continue with the work around below.

    Updated method on 8-5-2013: Thanks to SGBE

    The updated method has a better solder point. See that thread OVER HERE.


    Results:


    The Work Around: (verified working on multiple devices)
    We have a mod to make wifi charging work! Regardless if the T-Mobile GN2 is missing hardware or not, the work-around is a low cost (free?) alternative to get wifi charging working. Our work around involves soldering a small wire to a tiny point on the micro usb board. You should be able to solder a very small connection (about the size of a pen tip) before attempting this.​
    The mod/workaround below is verified working with the stock charger and stock kernel. <- Pay attention to that last bit. :cowboy:


    Workaround Known Issues:
    Some kernels have a charge rate which is set too high for the PALM PRE Touchstone to work with. Likewise, some non-oem chargers can not deliver enough amperage to continuously charge the device wirelessly through the Touchstone. Therefore, if you have any problems (disconnect/reconnect proble), be certain that you are using a stock charging rate (kernel controlled) and a stock Galaxy Note 2 Charger (2,000mA). If you are still having problems check your mod for trouble, and finally post up and maybe someone can help you.

    The Mod / Workaround:
    (also attachment #3 on the list below)

    attachment.php






    The full work around post is on page 3    .​


    New Information:
    If you have new information on a hardware or software fix then it will be added here. Until that time, proceed with the workaround at your own risk. Once again, the work around instructional image is HERE.



    WARNING: What was claimed to be a fix in the section below did not work, and ultimately people wasted money on bogus hardware. It is here for historical reference.

    The Fix
    You may need to purchase some missing hardware.
    See page 7 for details (you need to replace the flex cable and micro-usb board): http://xdaforums.com/showpost.php?p=34380437&postcount=65 The SKU number for the board is MBRPSS964.
    (the false wifi charging image is only attached for historical reference)






    Picture legend:
    1. Sprint GN2 chip (the chip is missing on T-Mobile's version)
    2. Sprint GN2 pin pads
    3. Wifi Charging work around instructions
    4. Completed work around example.
    5. alternate view of work around charging pin
    6. alternate view of work around +5vdc source
    7. Picture of the wi-fi fix working (reported that this may be a fake!)



    Older info:
    Some steps that I've personally done:
    Completed the wireless mod above, confirmed wireless voltage reading of 5.56vdc.
    Tested continuity between USB positive, and wireless positive - no connection.
    Tested continuity from the negative wireless charging pin to the negative USB, SIM slot, various screws - they are connected.
    Jumped the positive post on the USB to the wireless charging positive pin, the phone charges but is not practical to have a wire hanging out of the USB port.

    I plan to pull apart the phone and check the paths from the positive and negative ports on the wireless pins. Attached is a picture from a SPRINT GN2 that does not have the pins, but supposedly works for charging once contact is made with the pads. I'm going to be using this to compare the circuit against my T-mobile version.
    View
    4
    vinas1
    vinas1
    As it stands now, I jumped the USB 5vdc internally with a tiny wire, over to the wireless positive pin. It's working, although it was a tough mod. But it is totally internal so I guess this will have to do for now. So I have wireless charging (kind of, it works teh same as USB) on the T-mobile Note 2 now. If anyone wants to do the same thing, post up a pic of the board by the USB plug and I'll label the connector that you can use for the 5vdc source. The reason it's a tough mod is because you have to solder a small connection to the board under the capacitive touch buttons. It took me about 4 hours to find a good power lead on the board and make it all work internally!
    View
    3
    vinas1
    vinas1
    premiatul said:
    Did anyone tried the "CircuitWriter Pen"?
    I have one and I am tempted to try it.

    Here is what I'm talking about:

    http://store.caig.com/s.nl?sc=1&category=&search=circuit
    Click to expand...
    Click to collapse
    Circuit Pens not recommended for this mod. Grounding issues and reliability issues with conductive pens. To answer your question directly, I have tested with my conductive pen and it is difficult to maintain a path for any significant distance. These pens are probably good for minor repairs though, just not this mod. The path is pretty long and even if a conductive pen could be used, the risk of shorting is pretty high. It may be possible to use conductive tape, but reliability issues are likely.

    I'd like to take this opportunity to mention that the original mod which I posted is still going strong on my phone. Cheers!
    View
    3
    aaldere1
    aaldere1
    Hey gang. Wanted to update every one of you on this thread because we were able to get it to work on the Note II on the T-mobile network with a very simple fix that required no wiring, etc. It did, however, require that you purchase a Dock Charging Board Flex cable part that fits perfectly on the bottom of the circuit board. It will cause no functional changes to your phone, either. Wireless charging works in addition to plug-in charging.

    Because I'm a new user, I can't post links to the purchase store where I bought it but you can go to the website: China Gadget Land and do a search for charging flex cable n7100 - that one result is the one you are looking for. The SKU is: MBRPSS964

    Those of you who still want a link can just PM me to find out info about it. I'm also on twitter: @aaldere1

    The main difference between the two you can see by the picture attached. The default T-Mobile flex cable has 3 pins on the upper left corner, while the purchased one has two, plus a bit of a difference in circuitry.

    We thought originally that this woudln't work but there isn't any functional difference in the phone at all with this part. Again, this is a T-Mobile Note II. Works great.

    The good news is that this flex cable can be interchanged with your default one so if something doesn't work you won't have to severely modify your phone to get it back.
    View

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