Develop Bugs

[How-To] Moto G wireless charging (Universal Qi Receiver)

I've received my universal Qi wireless receiver today. The receiver is smaller than I had thought and fits perfectly into the Moto G. Since our phone lacks internal preparation for Qi (like it can be found on the Samsung Note 2), the connection is made via a micro USB plug. The backdoor can still be clipped on without being disturbed by the Qi receiver pad or its flat band cable. Charging time should be about the about the same as charging the phone from a PC USB port that doesn't output more than 500mA.
This solution is obviously for those who don't need the phones usb port on a daily basis.
The adapter on the left picture (and in the video) is from ebay and is the one that arrived here first. I’ve changed the cable routing to remove the ugly bulge that was visible on my first picture. This adapter outputs a maximum of 500mA and can be purchased from ebay.
Make sure to purchase the "interface layout A, narrow interface up” variant.
http://www.ebay.com/itm/261348107126
17.Jan.2014 - The picture on the right shows an adapter purchased from DealExtreme, that arrived here yesterday. This adapter delivers up to 650mA and the flat band cable comes out of the lower side instead out of the backside which removes the need to bent over the cable.
http://dx.com/p/zy-408-wireless-charging-receiver-for-mobile-phone-micro-usb-black-259151
Both adapters work well, so don't worry if you've already bought the one I've first reviewed. (I have both version in use on different phones)
Here is a small video that shows me placing the receiver inside the Moto G:
http://www.youtube.com/watch?v=U2WPjw-WaCI
Update 13.02.2014
From my testing I can tell the following:
1. An unrooted Moto G needs to be screen locked (I use the pattern lock type) or it will refuse to charge due to the missing pins. You can unlock the screen while it is charging as long as you don't lift it from the qi charger. (tested on 4.3 and 4.4.2, DE and FR firmware)
2. Root in combination with dubidu's tool makes it more straightforward but is not required.

Shadow_2k said:
I've received my universal Qi wireless receiver today. The receiver is smaller than I had thought and fits perfectly into the Moto G. Since our phone doesn't support Qi in any way, the connection is made via a micro USB plug. The backdoor can still be clipped on without being disturbed by the Qi receiver pad or its flat band cable.
This solution is obviously for those who don't need the phones usb port on a daily basis.
Should you wish to buy an adapter for your Moto G, make sure to get the "narrow-interface up" variant
I've also made a short video:
Click to expand...
Click to collapse
Nice. Can you tell us where you got it from -- is it just one manufacturer making these?
Cheers.

I just bought it off amazon (hooray rewards card, it was free).
http://www.amazon.com/Universal-Wir...micro-USB/dp/B00H7FJX7M/ref=pd_rhf_gw_p_tnr_1
Theres a few on ebay if you just look up "Universal QI Wireless Charging Receiver film"

JCBomb said:
I just bought it off amazon (hooray rewards card, it was free).
Theres a few on ebay if you just look up "Universal QI Wireless Charging Receiver film"
Click to expand...
Click to collapse
Thanks. I had looked on fleaBay and it looks like they all have the same packaging. I imagine any qi wireless charger thingy should work. In theory.

anyone know if this would work through an otterbox case? or I guess if this would even work with one due to the fact the part that plugs in sticks out a little bit...

I've bought it here:
http://www.ebay.com/itm/261348107126
The auction uses the same pictures as used in the amazon offer posted by JCBomb, might even be the same seller.

This is cool! I just hope there's like another way we can integrate that wireless charger.

Just saw your post at android.hilfe and started looking for some charger, it's indeed a neat solution.
Universal QI Wireless Charging Receiver film for micro-USB of All Android Mobile (7,99 USD):
http://cgi.ebay.fr/ws/eBayISAPI.dll...eName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
QI Wireless Charger Transmitter Charging Pad for Nokia Lumia 920 HTC 8X Nexus 4 (15,39 USD):
http://cgi.ebay.fr/ws/eBayISAPI.dll...eName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Are u guys using this wireless QI receiver? I'm going to buy one next month, D: . Just for curiosity, how much time do u guys spend to get a full charge with the QI

Guys i found this one at dx.com
http://dx.com/pt/p/micro-usb-qi-wireless-charging-back-clip-black-253066

Those kind of product are not so great are chaging, basically it's almost the same power that if you charge through uSB = 500mA.
What you need to check is the charging value, sometime it's :
- 400mA or less (avoid it, will take ages to charge),
- 500mA (just like your regular USB charger),
- 1000mA (great ones, will charge just like a wall charger, twice as fast as the previous model).
So the one at DX is great, but they're cheaper on ebay, plus you can choose between Black or White - http://cgi.ebay.fr/ws/eBayISAPI.dll...eName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

This one was the cheapest (around £15) I could find and works fine.
http://forum.xda-developers.com/showthread.php?t=2601628

impressive
wow, so cool :good:

Am I the only one thinking about finding the plug they use with all the pins intact and integrating a micro sd card into it for OTG storage? Wireless charging and storage, all in one, and fitting under a case.

I had that exact thought about two hours ago. Throw NFC in their while your at it.
Sent from my XT1034 using XDA Premium 4 mobile app

I had actually started to do some verrrry preliminary research into something like it using a ribbon cable and another usb port, so you could plug the phone into a wall charger and have the usb/sd card piggybacked off the cable. Hadn't gotten very far though...job, kid, wife etc.......
Someone TAKE MY MONEY for it!! Especially since it seems we're all soon to be headed down the 'no sd card' path.

I just got a Moto G for my wife and Nokia Wireless Charging Plate DT900 is not working any ideas why ?

It's not working with one of the universal QI receivers? Have you try enabling the floating charging (see my post)

tomciopaluch357 said:
I just got a Moto G for my wife and Nokia Wireless Charging Plate DT900 is not working any ideas why ?
Click to expand...
Click to collapse
Yes, you also need receiver in your phone.

tomciopaluch357 said:
I just got a Moto G for my wife and Nokia Wireless Charging Plate DT900 is not working any ideas why ?
Click to expand...
Click to collapse
Hello.
The Moto G doesn't support Qi on its own, you'll need to rig it with an universal wireless Qi charging receiver.
You can buy them from ebay, dealextreme and some other china based stores. The first post contains a short installation video.
This one from dealextreme will work (Output up to 650mA):
http://dx.com/p/zy-408-wireless-charging-receiver-for-mobile-phone-micro-usb-black-259151
as well as this one from ebay (Output up to 500mA):
make sure to purchase "interface layout A, narrow interface up)
http://www.ebay.com/itm/261348107126

[Q] LG D858 QI Charging?

Has anyone found a QI adapter for the LG G3 D858 yet? I dont think the standard adapter for D855 is compatible with D858

Glen L said:
Has anyone found a QI adapter for the LG G3 D858 yet? I dont think the standard adapter for D855 is compatible with D858
Click to expand...
Click to collapse
I don't think it is possible for D858 to use the wireless charging. Noted that there is only two contact points, which is used for the coils of NFC. If a machine supports wireless charging, there should be another two contact point that used to connect the coils for wireless charging.
(Yes, I am having a D858 too, and found this out sadly. :crying

D858hk is no wireless charging function....

Wireless charging

Hello,
I'm trying to set my g3 up with wireless charging (too many wires around my desk!) but im having problems.
I have the quick circle case, which I thought had wireless charging built in. I then bought the following product: http://www.amazon.co.uk/gp/product/B00M9TBTDM?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s01 hoping they were compatible.
I am thinking either the quickcircle case is only compatible with the official lg wireless charger? I never actually use the quick circle case anyway, just tried it for testing purposes. Would something like this from ebay enable me to use my normal back cover, to work with the type of charger ive listed above? http://www.ebay.co.uk/itm/QI-Wirele...ories_MobilePhoneChargers&hash=item2ed969a5c9
I have the F400L Korean model.
Any advice would be much appreciated.
Thanks
Adam

Have you got the snap-on or the replacement backcover variant of QuickCircle? If former, then you can't use it for Wireless charging IIRC, if the latter, check how many pins there are on the inside of the cover, if it has only 2 of them, then it has only NFC compatibility and no wireless charging available, if it has 4 of them, try to carefully align the device so the center of the device is aligned with the logo on your charger.

Knucky said:
Have you got the snap-on or the replacement backcover variant of QuickCircle? If former, then you can't use it for Wireless charging IIRC, if the latter, check how many pins there are on the inside of the cover, if it has only 2 of them, then it has only NFC compatibility and no wireless charging available, if it has 4 of them, try to carefully align the device so the center of the device is aligned with the logo on your charger.
Click to expand...
Click to collapse
Hi, I have one that replaces the back cover, it has the 4 pins, I tried moving it over all parts of the charger, there were times when the phone would begin to charge, but this only lasted for a split second. But as I said above, im not keen on the quick circle case anyway, would much prefer to get it working with the regular back cover

will one of those stickers from ebay work to attach to my back cover? the listings suggest they dont work for my model; "QI Wireless Charging + NFC Antenna Sticker for LG G3 D855 VS985 D851 LS990"

Try swapping your USB cable and make sure your power supply is rated to put out at least 1.8 Amps.

[Q] d852 to try and use Qi ?

So, I've got a Rogers LG G3 (d852) ... and I've bought a Qi case for it that says it's for the d850 (which the mid frame back has d850 written in various spots). The sticker's contact points line up, but when I put it on a Qi charging pad it doesn't work. Testing out the NFC and it doesn't work either.
Hopefully it's a bum case... But I also purchased a d850 back plate that has NFC and Qi receivers, so I'm hoping those will work.
Doing some research it says the d852 is PMA ... but if I replace the receiver on the back, should it not work with Qi?
Help? What are the differences between the d852 and the d850 (from what I can tell it was which bands the cell operated on and nothing about battery contact points etc...)

1baldric said:
So, I've got a Rogers LG G3 (d852) ... and I've bought a Qi case for it that says it's for the d850 (which the mid frame back has d850 written in various spots). The sticker's contact points line up, but when I put it on a Qi charging pad it doesn't work. Testing out the NFC and it doesn't work either.
Hopefully it's a bum case... But I also purchased a d850 back plate that has NFC and Qi receivers, so I'm hoping those will work.
Doing some research it says the d852 is PMA ... but if I replace the receiver on the back, should it not work with Qi?
Help? What are the differences between the d852 and the d850 (from what I can tell it was which bands the cell operated on and nothing about battery contact points etc...)
Click to expand...
Click to collapse
I don't think you can just change the charging coil to make Qi work on D852. It seems D852 is missing the Qi charging circuitry inside the phone. Your best bet is get an PMA charging sticker and put it in your back cover to enable PMA wireless charging like this:
http://www.ebay.com/itm/LG-G3-PMA-W...923?pt=LH_DefaultDomain_0&hash=item2ed9ec328b

I thought the 'receiver' that's the sticker on the case is the coil, and the leads in on the phone just provide the power.
The extra weird part is that the NFC doesn't work either.
I've ordered a Qi back plate to double check.

1baldric said:
I thought the 'receiver' that's the sticker on the case is the coil, and the leads in on the phone just provide the power.
The extra weird part is that the NFC doesn't work either.
I've ordered a Qi back plate to double check.
Click to expand...
Click to collapse
That is not true. The coil is just one part of the Qi charging system, it is not the receiver. There is a receiver IC in the phone that does two way communication with the Qi charger via the coil before any charging can happen. Think of the coil as a wifi antenna, and the receiver IC as the wifi card. Without the wifi card, it is pointless to put a wifi antenna there. Your wireless receiver IC is of PMA, and it does not work with a Qi coil.

Now it's funny because I went and called LG tech support yesterday (not saying they're the most savvy folks out there, but you never know).
According to them, the d850 and the d852 are exactly the same (some bands are different for carriers in the US), and even within the d850 line there's PMA or Qi charging backs but the internals are the same (or so they say).

Huawei G8 (GX8) charing with qi system

Hello experts!
Some weeks ago I byed a Huawei phone G8. With my old Nexus 4, there was a feature that I´m missing. Charging with Qi. At the G8 there is no provision of home because the device has a metal cover and thereby provide the factory can not.
So I tested a universal variant in which the receiver is connect about the Mico USB from the phone. The receiver has a power output of 1000mA and is It is this model: http://www.amazon.de/gp/product/B00C5X1JGE?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00
The install was easy, space between Sender and receiver less then 4mm. I have test 2 Models of charger, a Zens like this http://www.amazon.de/gp/product/B00C5X1JGE?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00
And this model:
http://www.ebay.at/itm/121797953332?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
With both models, I have the same problem. The charging of the mobile phone works so flawlessly to 95%. Above this threshold, there are only charging interruptions, sometimes stops the charge. I have use different power supply units tried with 5V 1A to 5V 2A no change, always the same problem.
Charging up to 100% is possible with the charger cable without Qi. Does anyone have experience with Qi charging in conjunction with Huawei mobile phones? Can anyone give a hint what I could do to?
I've even ordered a Qi Circuit Board with 3 coils from China. Should obviously have more output line. The model I have not yet, however, is on the way. Gladly I will tell my experience with this model.
Many thanks for your help!