09-05-2014 09:16 AM
72 123
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  1. teoami's Avatar
    I will be pre-ordering my black Lumia 1520 tomorrow from the ATT store (trading in old phone to get a discount). Since ATT decided they wanted to try and force PMA onto their customers, I will be making my own Qi charging case for it.

    I want the official Nokia flip cover, but I don't think they will be making a charge cover version of it. I noticed that the 925 shares the same 3 pin connector as the 1520. So I will essentially be taking the charging coil sticker out of a 925 case and attaching it to my flip cover to work with the 1520.

    I figured this gives me the best of both worlds, Qi charging and having a valid warranty through ATT.

    Anyone else considering this?

    FYI, I'm using this video as reference for taking the charging cover apart:
    xandros9 and peacock93 like this.
    11-14-2013 10:37 AM
  2. JPDVM2014's Avatar
    Good luck. I'm sure if it works, there will be interest in it. Make sure you document it so others can reproduce it when you are done.
    11-14-2013 11:03 AM
  3. superlawyer15's Avatar
    I'd be interested in enabling Qi in someway or another

    those charging pillows look sweet
    Buy Nokia Wireless Charging Pillow by Fatboy - Microsoft Store
    11-14-2013 11:11 AM
  4. michail71's Avatar
    I wonder if the "sticker" would be available as a standalone?
    11-14-2013 02:04 PM
  5. peacock93's Avatar
    I wonder if the "sticker" would be available as a standalone?
    I've looked but haven't found anything that I think would work better than the video that the OP linked.
    11-14-2013 04:11 PM
  6. superlawyer15's Avatar
    Does the 1520 back cover even come off like that?
    11-14-2013 04:26 PM
  7. SoloXCRacer's Avatar
    Interesting idea! Do let us know if it works out. :)
    11-14-2013 04:39 PM
  8. peacock93's Avatar
    Does the 1520 back cover even come off like that?
    It will be different but it will come off. Probably more like the 920. At least that's my guess.
    11-14-2013 05:29 PM
  9. kimck99's Avatar
    There is a video on YouTube that shows how to disassemble the 1520
    11-14-2013 05:51 PM
  10. ChillyBruh's Avatar
    Looks like it should be pretty easy once you get the back off.
    11-14-2013 08:17 PM
  11. michail71's Avatar
    Wow, that is a big battery. Looks like a hard drive.
    giantenemybird and xandros9 like this.
    11-15-2013 10:57 AM
  12. michail71's Avatar
    I've looked but haven't found anything that I think would work better than the video that the OP linked.
    So it may be possible to open the case and add in the induction sticker/layer?

    There is probably some sort of Chinese supplier out there for the part. Hopefully, someone will buy in bulk and resell.
    eutonl likes this.
    11-15-2013 11:01 AM
  13. teoami's Avatar
    To answer some questions:
    I have looked for a supplier for just the charging coil used in the 925 cases, none have surfaced. Maybe if someone was to pose as a manufacturer that wants to make cases and asks Nokia nicely where to find the coils?

    Also, i'm sure that it would be very simple to add the coil inside the 1520 itself, but I dont want to void my warranty so i am going to add it to the nifty Nokia flip case.

    I will definitely document the process and post it back here for everyone to see once I get it accomplished.
    eutonl likes this.
    11-15-2013 11:35 AM
  14. cubanaso's Avatar
    I purchased a galaxy note 3 charging coil from eBay that has the three contacts and I will be trying to see if it works. For $8 its worth the experiment



    Sent from my RM-846_apac_hong_kong_220 using Tapatalk
    lucas.scott likes this.
    11-15-2013 12:03 PM
  15. cubanaso's Avatar
    Double post
    Last edited by cubanaso; 11-15-2013 at 05:32 PM.
    11-15-2013 12:03 PM
  16. teoami's Avatar
    I purchased a galaxy note 3 charging coil from eBay that has the three contacts and I will be trying to see if it works. For $8 its worth the experiment
    Hope that it doesn't have a different pin-out for the connectors and mess up the phone.

    Also, it has a different layout and would put the coil in a weird place in the phone unless you do some wiring.
    11-15-2013 12:13 PM
  17. Bodrik's Avatar
    To answer some questions:
    I have looked for a supplier for just the charging coil used in the 925 cases, none have surfaced. Maybe if someone was to pose as a manufacturer that wants to make cases and asks Nokia nicely where to find the coils?

    Also, i'm sure that it would be very simple to add the coil inside the 1520 itself, but I dont want to void my warranty so i am going to add it to the nifty Nokia flip case.
    I registered just to provide fair warning, but posing as a manufacturer to another company is a variety of corporate spying. Do not do this. You can potentially get anybody that answers you without verifying who you are into disciplinary action.

    Have you looked at the QI membership list? For example Wurth and TDK are members as suppliers of wireless charging coils. And look what we have here... Digikey has TDK and Wurth wireless charging coils. The Qi specifications for receivers are a lot simpler then the transmitters, but there are additional components involved. It will be worth knowing if the additional circuitry was actually removed in whole or left alone, with just the coil portions removed.

    Good luck.
    11-15-2013 12:49 PM
  18. superlawyer15's Avatar
    I registered just to provide fair warning, but posing as a manufacturer to another company is a variety of corporate spying. Do not do this. You can potentially get anybody that answers you without verifying who you are into disciplinary action.
    This isn't true
    11-15-2013 01:01 PM
  19. Bodrik's Avatar
    This isn't true
    It may not be in law books. But certain companies do have such rules. Impersonating to gain design information is a big no-no.
    11-15-2013 01:04 PM
  20. superlawyer15's Avatar
    They aren't trying to get design information ...they are trying to source a part made by a third party
    Even so ...how would you go about proving the caller doesn't have a genuine desire to make Qi cases

    ...bottom line is this; no one is going to get in trouble for calling in and asking a question
    11-15-2013 01:17 PM
  21. Bodrik's Avatar
    They aren't trying to get design information ...they are trying to source a part made by a third party
    Even so ...how would you go about proving the caller doesn't have a genuine desire to make Qi cases

    ...bottom line is this; no one is going to get in trouble for calling in and asking a question
    In order to do that, understand that you would need to get through to a engineer in the mobile device development. You would have to impersonate a 3rd party to do so... Then they would have to divulge information on what part of the receiver circuitry is removed for AT&T's version. That is design information only meant for actual 3rd party accessory makers.

    The hope is for a tear-down of either the AT&T or International version, and/or find out what the Incipio PMA case includes, alongside an understanding of what the PMA/Qi circuitry differences are. The case should provide clues to what is not in the hardware itself.
    11-15-2013 01:28 PM
  22. penetronn's Avatar
    I'm definitely interested to see how this plays out! Particularly with the official Nokia case.
    11-19-2013 02:05 PM
  23. Daniel Ferrara's Avatar
    So, I have a question along these lines. Would it be possible, technologically, for a third party to make a Qi charging back for the 1520. Or was something changed internally in the phone that would prevent this. I don't understand the differences, technically speaking, between Qi and PMA. The back of the phone has the 3 contacts, so could any charging solution be attached to that? Or only PMA ones? Thanks!
    11-19-2013 03:26 PM
  24. teoami's Avatar
    So, I have a question along these lines. Would it be possible, technologically, for a third party to make a Qi charging back for the 1520. Or was something changed internally in the phone that would prevent this. I don't understand the differences, technically speaking, between Qi and PMA. The back of the phone has the 3 contacts, so could any charging solution be attached to that? Or only PMA ones? Thanks!
    The "tech" inside the phone is not exclusive one way or the other. They are just leads that go to the motherboard same way as the power pin on the USB plug. It just looks for the proper voltage and starts charging.
    As an example, if you look for charging coils for the Note 3, they offer both PMA and Qi options that connect to the same pins.
    11-19-2013 03:47 PM
  25. Daniel Ferrara's Avatar
    Thanks for the reply. That sounds like great news! So, am I right in thinking that there is nothing from stopping a 3rd party from releasing a Qi back for the Lumia 1520? I already have the charging pad for my 920 and it would be nice not to have to buy a new one.
    11-19-2013 06:29 PM
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