Related
So I noticed the wireless QI receivers have started becoming literally paper thin lately.
And with this girls teardown, https://www.youtube.com/watch?v=dweww9_RF2E#t=224
I think it looks like you could remove the thin plastic over the battery, and fit a QI receiver there.
Thoughts?
Shadowdancer123 said:
So I noticed the wireless QI receivers have started becoming literally paper thin lately.
And with this girls teardown, https://www.youtube.com/watch?v=dweww9_RF2E#t=224
I think it looks like you could remove the thin plastic over the battery, and fit a QI receiver there.
Thoughts?
Click to expand...
Click to collapse
we wouldn't be able to remove that plastic piece because it hold the battery, but it is stil possible. i already did recon on some places to solder in a wireless charger.
Legacystar said:
we wouldn't be able to remove that plastic piece because it hold the battery, but it is stil possible. i already did recon on some places to solder in a wireless charger.
Click to expand...
Click to collapse
Curious, but I'm looking at the flat cable that just lies there, under the M-logo. It doesn't appear to have any PCB at the end?
I wonder if they were thinking about adding a QI coil there, but decided it was too expensive?
Shadowdancer123 said:
Curious, but I'm looking at the flat cable that just lies there, under the M-logo. It doesn't appear to have any PCB at the end?
I wonder if they were thinking about adding a QI coil there, but decided it was too expensive?
Click to expand...
Click to collapse
That's my theory since the nexus 6 has wireless and they are the same chassis essentially . or it was for a fingerprint scanner they abandoned. Once we see a nexus 6 teardown we will have a better idea if we can do it.
Legacystar said:
Once we see a nexus 6 teardown we will have a better idea if we can do it.
Click to expand...
Click to collapse
Been waiting for that...
Shadowdancer123 said:
Curious, but I'm looking at the flat cable that just lies there, under the M-logo. It doesn't appear to have any PCB at the end?
I wonder if they were thinking about adding a QI coil there, but decided it was too expensive?
Click to expand...
Click to collapse
Could have sworn I read somewhere that between they cable and a teardown of the software showing code for a fingerprint scanner, the original idea was to have the scanner. I could be wrong though.
gotzaDroid said:
Could have sworn I read somewhere that between they cable and a teardown of the software showing code for a fingerprint scanner, the original idea was to have the scanner. I could be wrong though.
Click to expand...
Click to collapse
Let's hope you're wrong then.
It would be really cool to have wireless charging, shame so few manufacturers add this.
The amount of stuff needed to make the coils on the receiving end is pretty limited, I could absolutely accept buying the transmitter separately, (like the turbo charger is now)
But I suspect the patent royalties are expensive, patents sure don't benefit users..
Wireless charging
Anyone able to confirm if this is possible after the nexus 6 tearnever down?
bleys121 said:
Anyone able to confirm if this is possible after the nexus 6 tearnever down?
Click to expand...
Click to collapse
Looks like the nexus 6 has a different config then the moto x so as far as a plug and play solution, no. I have located 2 contact locations where we could solder in a qi coil. I'm just trying to work up the courage to try it lol
Here is a related question: without modding the phone itself on the 2013 and 2014 model I cant get one of the QI receivers to work. This is the one for sale on eBay / amazon / newegg with a micro usb end to plug into the micro usb port. It literally works with every other micro usb device i own including a Samsung bluetooth headset, several phones and some other stuff i cant think of at the moment... On the moto x 2013 and 14 I literally see no charge and see it actively loose charge over time with this device plugged in.
It may be tricky with the moto x. There are some negative and some positive reviews here for example: http://www.amazon.com/gp/aw/cr/B00MN3RR7Q/s=sd/ref=mw_dp_cr
There are also some reviews saying they needed to restart the device once while on the charger: http://www.amazon.com/gp/aw/review/B00H7FJX7M/R2YPDLOU1BD4QE/ref=mw_dp_cr?cursor=2&sort=rd
You can find more of those comments on the internet. Could you try that, and if it works clarify if you need to restart it every time you want to charge or every time you connect something else?
Here is another link for the original moto x: http://www.reddit.com/r/MotoX/comments/2gskxw/original_moto_x_wireless_charging_mod_qi/
Edit: you may need a screen lock, e.g. the pattern lock.
http://forum.xda-developers.com/showthread.php?t=2596469
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)
Click to expand...
Click to collapse
Legacystar said:
Looks like the nexus 6 has a different config then the moto x so as far as a plug and play solution, no. I have located 2 contact locations where we could solder in a qi coil. I'm just trying to work up the courage to try it lol
Click to expand...
Click to collapse
Go for it lol! Take some nice pics if you do. You'd be my hero.
Sent from my Nexus 5 using Tapatalk
Well chaps, bad news. I don't think this is going to be possible. I spent 6 hours today trying various solder points. Couldn't get any of them to actually charge the battery. Seems to be some sort of system configuration thats interfering with how its detecting .
Legacystar said:
Well chaps, bad news. I don't think this is going to be possible. I spent 6 hours today trying various solder points. Couldn't get any of them to actually charge the battery. Seems to be some sort of system configuration thats interfering with how its detecting .
Click to expand...
Click to collapse
Did you look at /sys/module/msm_otg/parameters/floated_charger_enable? It might not be enabled. Here's a similar thread for the Moto G:
http://forum.xda-developers.com/showthread.php?t=2688276 (see the update at the top)
http://forum.xda-developers.com/showthread.php?t=2601628 (thread for the app, not sure it works on X2 but you can check manually through ADB for the above /sys path).
As far as I know, wireless charging won't work without a pattern lock or having that option set. My Moto X won't be here until next week so I can't do any testing until then.
romracer said:
Did you look at /sys/module/msm_otg/parameters/floated_charger_enable? It might not be enabled. Here's a similar thread for the Moto G:
http://forum.xda-developers.com/showthread.php?t=2688276 (see the update at the top)
http://forum.xda-developers.com/showthread.php?t=2601628 (thread for the app, not sure it works on X2 but you can check manually through ADB for the above /sys path).
As far as I know, wireless charging won't work without a pattern lock or having that option set. My Moto X won't be here until next week so I can't do any testing until then.
Click to expand...
Click to collapse
I tried pattern lock, didn't help. Wireless charging does not require a lock, my girlfriend has a droid maxx and wireless works without it.
As far as the module check, I don't have root on Verizon so I wouldn't be able to test it.
Legacystar said:
I tried pattern lock, didn't help. Wireless charging does not require a lock, my girlfriend has a droid maxx and wireless works without it.
As far as the module check, I don't have root on Verizon so I wouldn't be able to test it.
Click to expand...
Click to collapse
You are correct about wireless charging in general. I think the reason the pattern lock is suggested is because the wireless mod (even without internally mounting it) only provides 2 wires on the USB connector. Something about only having 2 wires, and not the data pins, is why the locking is suggested.
No worries on the module, just something I had seen while investigating. I don't know if the Maxx supported wireless charging out of the box, but it may have the flag enabled by default (that flag seems common among many Moto devices).
I'm coming from a Nexus 5 and I'll really miss wireless charging, hence my questions to you
romracer said:
You are correct about wireless charging in general. I think the reason the pattern lock is suggested is because the wireless mod (even without internally mounting it) only provides 2 wires on the USB connector. Something about only having 2 wires, and not the data pins, is why the locking is suggested.
No worries on the module, just something I had seen while investigating. I don't know if the Maxx supported wireless charging out of the box, but it may have the flag enabled by default (that flag seems common among many Moto devices).
I'm coming from a Nexus 5 and I'll really miss wireless charging, hence my questions to you
Click to expand...
Click to collapse
The Maxx has it built in from moto, same internals as the moto x essentially. If we get root I could look at the module thing. I was lucky that I had access to a spare moto x main board so I didn't have to solder on mine. That won't be the case in the future.
I'm going to post all the points I tried so maybe someone can figure this out. I was able to get it to show charging but only right after reboot and it would stop once I took it off and replaced it. I have to emphasize it showed charging but never actually charged the battery, it would show charging in battery stats bit not in the status bar. I also use battery monitor widget to check the current and it never showed positive charge current. Once I was able to get it to details at as a USB charge, only happened once, still didn't charge though.
This all makes me think there is something screwy going on.
Legacystar said:
The Maxx has it built in from moto, same internals as the moto x essentially. If we get root I could look at the module thing. I was lucky that I had access to a spare moto x main board so I didn't have to solder on mine. That won't be the case in the future.
I'm going to post all the points I tried so maybe someone can figure this out. I was able to get it to show charging but only right after reboot and it would stop once I took it off and replaced it. I have to emphasize it showed charging but never actually charged the battery, it would show charging in battery stats bit not in the status bar. I also use battery monitor widget to check the current and it never showed positive charge current. Once I was able to get it to details at as a USB charge, only happened once, still didn't charge though.
This all makes me think there is something screwy going on.
Click to expand...
Click to collapse
I ordered a Pure Edition (Cyber Monday deal was a great one) so if nothing else I'll have root to poke around. Pictures of where you tried would definitely be helpful. I think I saw some from you in another thread, but all in one place would make searching easier
A 5V near the USB port would be ideal because then we'd know its likely feeding into the battery or charge circuit. 5V elsewhere on the board may not be wired to the battery. Looking at the photos in that Moto G thread may give you an idea on where to poke around with a multimeter.
The charging after a reboot, and until you picked it up, sounds like maybe you did have it at one point. That whole "until you pick it up" is another thing mentioned by many in those Moto G threads.
What wireless charging receiver did you use (not your base station)? The one I ordered says "up to 1000mAh" but I had seen some at 500 or 650. A lower output rating may not be enough to charge the battery at all. One way to test this would be a very low output wall charger (one that puts out 500mAh for example) and see if the X shows charging when connected to that.
On a related note, how hard is it to disassemble the X? Some of the teardowns look like it could be a pain.
romracer said:
I ordered a Pure Edition (Cyber Monday deal was a great one) so if nothing else I'll have root to poke around. Pictures of where you tried would definitely be helpful. I think I saw some from you in another thread, but all in one place would make searching easier
A 5V near the USB port would be ideal because then we'd know its likely feeding into the battery or charge circuit. 5V elsewhere on the board may not be wired to the battery. Looking at the photos in that Moto G thread may give you an idea on where to poke around with a multimeter.
The charging after a reboot, and until you picked it up, sounds like maybe you did have it at one point. That whole "until you pick it up" is another thing mentioned by many in those Moto G threads.
What wireless charging receiver did you use (not your base station)? The one I ordered says "up to 1000mAh" but I had seen some at 500 or 650. A lower output rating may not be enough to charge the battery at all. One way to test this would be a very low output wall charger (one that puts out 500mAh for example) and see if the X shows charging when connected to that.
On a related note, how hard is it to disassemble the X? Some of the teardowns look like it could be a pain.
Click to expand...
Click to collapse
i've attache da picture of the points i used and the results are as follows.
1. shows 5v when plugged in. when wireless coil is attached to it, will power the phone up without the battery connected (doesn't boot, just shows a battery on screen)
2. pretty much exactly the same as spot 1
3. shows 5volts but doesn't power the phone
4. shows 5v but doesn't power the phone
5. you can't see it in the picture because the rubber cover for the usb port is on but there is a diode right behind the usb port. this one is the only port i was able to get it to say usb charging ONCE. other then that, acts the same as 1 and 2.
again i have to emphasize that even though they show charging initially, they never actually charge the battery.
I'm using a galaxy s3 qi insert 700ma. i think there is a mislabeling on some qi pads saying 1000ma but not considering the 30% loss in inductive charging. even ones with 1000 on them tend to charge around 650ma. some label including the loss.
As far as teardown it's not too complicated to get the back off, lots of adhesive so be careful to not bend the back cover. i have leather so that was a particular hassle as i didn't want creases in the leather. after that there are 17 screws to remove. i've included a picture of the ones you need to remove. the ones around the silver ring on the "moto" logo don't need to be removed along with the silver screw for the buttons.
after you remove the screws and disconnect the buttons and battery from the board the back battery plate comes off in one piece. one of the particularly hard parts about testing points is you can't turn the phone on because the power button is part of the battery plate. also when you put the battery plate back on and you have wires running to contact points it won't fit because there is a speaker "box" that sections off that circuitry. i combated this by using copper tape to essentially make my own tiny custom circuit pathways leading out of that box where i then could attach wires and run them up through the hole that the battery connector goes.
THIS IS NOT FOR THE FAINT OF HEART!
i'm going to write up a tear down guide for this phone. what section do you guys think i should post it in?
Is there a speed difference on qi vs PMA?
Bump
no there is no difference, just different wireless frequency.
here is a quote of mine in another thread:
me said:
the Samsung will work with either charging technology, but Qi charging seems to be the winning "standard" for wireless charging, almost all newer phones are more likely to come with Qi compatibility rather than PMA. so while the PMA might work fine, chances are your $8.99 discontinued charger might not be compatible with your next phone. Nexus 6/5/4/7, Sony Xperia Z3, Motorola, etc All use Qi. i would much rather spend $10 more and at least i know it will work with my future phones since i upgrade almost yearly..
Click to expand...
Click to collapse
and
me said:
you won't find any wireless charger at 2A.. they're all 1A at most. i doubt we would ever even see a 2A pad as i can imagine the amount of heat it will generate..
i have this dock/pad: http://www.amazon.com/dp/B00RGIK7P/
which IMO is better than any samsung overprice pad. phone can be held in portrait, landscape or flat like a pad and has 3 coils so it doesn't matter as long as it's touching the surface. it even holds my tablet, and works with 2 of my other devices. just make sure whatever you buy it's Qi and not PMA because even though the S6 supports both, i think in the end Qi wins and becomes the wireless charging standard. most phones coming out are Qi and at least you know the pad you buy will work with future devices.
Click to expand...
Click to collapse
tft said:
no there is no difference, just different wireless frequency.
here is a quote of mine in another thread:
and
Click to expand...
Click to collapse
Will PMA survive with the help of Galaxy S6?
feihu989 said:
Will PMA survive with the help of Galaxy S6?
Click to expand...
Click to collapse
PMA will survive with the help of Starbucks.
They are in the process of merging with A4WP, who are working on Rezence, so won't be going away anytime soon. This is a magnetic resonance system which improves the range to about 5cm - WPC are working on something similar for Qi. Presumably A4WP are interested because this will allow their new standard to be be backwards compatable with existing PMA transmitters (Starbucks!), so they don't have to compete with Qi from scratch.
I would expect most phones with wireless charging to support both standards in the future. It doesn't really cost anything extra and ensures their customers can just charge anywhere.
isangelous said:
PMA will survive with the help of Starbucks.
They are in the process of merging with A4WP, who are working on Rezence, so won't be going away anytime soon. This is a magnetic resonance system which improves the range to about 5cm - WPC are working on something similar for Qi. Presumably A4WP are interested because this will allow their new standard to be be backwards compatable with existing PMA transmitters (Starbucks!), so they don't have to compete with Qi from scratch.
I would expect most phones with wireless charging to support both standards in the future. It doesn't really cost anything extra and ensures their customers can just charge anywhere.
Click to expand...
Click to collapse
Yeah that maybe true, but if no mobile phones use PMA, it will still be still be a problem, LG G3 AT&T version supports PMA before, now Galaxy S6 supports PMA, a technique couldn't be developed without the support of Samsung, Moto, HTC ...
feihu989 said:
Will PMA survive with the help of Galaxy S6?
Click to expand...
Click to collapse
it will most definitely help spike more PMA device sales, but i don't think one phone will help it long term.
it's only fading slightly slower because of Starbucks as someone else mentioned, and the fact that they are part of the PMA Alliance/Board (including ATT) which might be why they would probably fight tooth and nail continue pushing PMA on mobile devices.
Do you guys actually find wireless chargers useful? I never used one before, but I keep looking for reasons. The cons outweigh the pros by too much at this time for me.
asdfvtn said:
Do you guys actually find wireless chargers useful? I never used one before, but I keep looking for reasons. The cons outweigh the pros by too much at this time for me.
Click to expand...
Click to collapse
For me, it's all about the convenience.
I'm never in a situation where I need to charge my phone right now. I typically charge overnight and it gets me through the whole day. If I use it more than usual on a given day, I just plug it in for a bit before I head out if I'm worried it won't make it to bed time.
Having charge pads set up in my common places (nightstand, desk at work) allows me to catch some extra volts when simply putting my phone down like I normally would. Add the fact that the wireless charging then means never having to fumble with cables and plug in the phone ever again, and you get used to the convenience pretty quickly. Plugging in a phone starts feeling like an outdated concept, like something that belongs on a smartphone of yesteryear.
asdfvtn said:
Do you guys actually find wireless chargers useful? I never used one before, but I keep looking for reasons. The cons outweigh the pros by too much at this time for me.
Click to expand...
Click to collapse
Honestly, it's the cool factor - for us tech geeks at least. Is it useful? Probably just as much as your cable charger in my opinion - less so with the introduction of fast charging...
---------- Post added at 08:29 PM ---------- Previous post was at 08:23 PM ----------
isangelous said:
PMA will survive with the help of Starbucks.
They are in the process of merging with A4WP, who are working on Rezence, so won't be going away anytime soon. This is a magnetic resonance system which improves the range to about 5cm - WPC are working on something similar for Qi. Presumably A4WP are interested because this will allow their new standard to be be backwards compatable with existing PMA transmitters (Starbucks!), so they don't have to compete with Qi from scratch.
I would expect most phones with wireless charging to support both standards in the future. It doesn't really cost anything extra and ensures their customers can just charge anywhere.
Click to expand...
Click to collapse
Hey I don't know for certain, but I also read somewhere that these companies are pushing PMA more because it can transmit and control other type of info, such as how long a customer has been on charge, and then send a coupon to their phone, etc. I don't know if the Qi technology supports that type of technology. You think this might also help?
I am thinking they are probably thinking from a business perspective, where they can charge people to charge their phones...
If you've ever had a micro USB port issue, then you'd appreciate the ability to wireless charge. I plugged and unplugged my S4 so much that the micro USB port stopped working properly. I ended up buying a replacement USB board on ebay. Not going to have to worry about that with the S6 since I'll primarily be using wireless charging in usual charging situations (nightstand, desk, car).
What Qi-charging options are there for the xperia Z5?
Any chance that Sony will release something similar to WCR14, or are we stuck with fitting generic receivers between the phone and a case?
As I know, z5 doesnt support wirelless charging out of the box
Proday said:
As I know, z5 doesnt support wirelless charging out of the box
Click to expand...
Click to collapse
Yeah, exactly, no support for wireless charging. However, Sony has released cases with built-in wireless charging for earlier models of the Z-line
and I was wondering if anyone knew if they are going to release a similar solution for the Z5 Compact.
At the moment it seems as though the only viable option is to install a qi-receiver bought on ebay or a similar site and pair it with a case.
Not so bad i guess, since it probably is a hell of a lot cheaper and you get to choose whichever case you want.
Awaiting my Z5C now and will update when I have installed a qi solution.
That is impossible becouse that cases before have connection over magnetic charger and z5c dont have it.
Okay, bummer..
I thought they might solve the problem of the missing magnetic port by using the micro-usb connection..
Just wanted to confirm, I purchased a Qi Wireless Receiver that connects over USB - no dice. They don't have the "teeth" that microusb ports have and due to the water proofing the port doesn't turn on.
jonshipman said:
Just wanted to confirm, I purchased a Qi Wireless Receiver that connects over USB - no dice. They don't have the "teeth" that microusb ports have and due to the water proofing the port doesn't turn on.
Click to expand...
Click to collapse
Really?
Shucks.. I just ordered one of those..
Tried various adapters and it doesn't draw enough power to charge. It just vibrates and turns the screen on but doesn't say charging.
Maybe you should try "detect the usb device" option
moazzam.munir said:
Maybe you should try "detect the usb device" option
Click to expand...
Click to collapse
This.
I will be ordering up a high amp one soon to hopefully help me get my phone through the day. I'll report in if it does or doesn't work.
I am using this one
http://www.amazon.de/Universal-Qi-Wireless-Ladegerät-Micro-USB-Android-Handy-Schnittstelle/dp/B00OH12LA0/ref=sr_1_2?s=ce-de&ie=UTF8&qid=1456411436&sr=1-2&keywords=qi+receiver+1000ma#productDetails
in combination with this case
http://www.amazon.de/gp/product/B016D8ZACK?ref_=pe_1365651_54849071
looks perfect and my phone gets from empty to 100% in about 6 hours.
Thorstenk said:
I am using this one
http://www.amazon.de/Universal-Qi-Wireless-Ladegerät-Micro-USB-Android-Handy-Schnittstelle/dp/B00OH12LA0/ref=sr_1_2?s=ce-de&ie=UTF8&qid=1456411436&sr=1-2&keywords=qi+receiver+1000ma#productDetails
in combination with this case
http://www.amazon.de/gp/product/B016D8ZACK?ref_=pe_1365651_54849071
looks perfect and my phone gets from empty to 100% in about 6 hours.
Click to expand...
Click to collapse
Looks nice! what kind of amperage are you able charge with tst receiver?
I'm going to be ordering this one:
https://www.amazon.com/gp/aw/d/B00YGV76LK/ref=ox_sc_act_image_1?ie=UTF8&psc=1&smid=A11ID9O6IRX38
Review show that it's pretty close to 1amp in most cases.
And using this so every time its in my pocket I'll have this in there charging it..
http://www.amazon.com/gp/aw/d/B018T...X236_SY340_FMwebp_QL65&keywords=qi+power+bank
Ampere shows 200-600 mAh (depending of the position)
Its working really good and its cheap, don't get why not all the companies install it in their phones ...
jonshipman said:
Just wanted to confirm, I purchased a Qi Wireless Receiver that connects over USB - no dice. They don't have the "teeth" that microusb ports have and due to the water proofing the port doesn't turn on.
Click to expand...
Click to collapse
Just wanted to post to say that this is wrong. What it needs to work is a connector has the data pins to be connected so that it shows that it's capable of outputting higher than 500mA. I'm using the Zoer receiver that has that and it works fine. Amperage is between 260mA to 770mA depending on the qi charger that I use.
no, not really. This qi definitely works.
nvrd said:
Really?
Shucks.. I just ordered one of those..
Click to expand...
Click to collapse
You just need one with 4 pins instead of the cheaper 2 pin ones. I have one which definitely works. Unfortunately, xdadevelopers doesn't let new users post links for some reason, so I can't help anybody with the link to the one I use. I spent a lot of time working out what to use and finally went into a 'retail store' to test the one I ordered before ordering my own z5 compact. If anybody wants the link to the ebay item, just email at [email protected]. Make sure you choose the 'A type' for the z5 compact. Works a treat. There is a lot of confusion about qi on the z5. Some people are saying that it is because of its waterproof attributes, you can't do it. Not so. This works perfectly and once on, can be used with any QI standard charging mat.
Guy, anyone tried with the quickcharge wireless pad yet? By the way, do we need to have quick charge supported receiver coils in order to use the quick charge charging pad?
qiang85 said:
Guy, anyone tried with the quickcharge wireless pad yet? By the way, do we need to have quick charge supported receiver coils in order to use the quick charge charging pad?
Click to expand...
Click to collapse
I've never seen a quick charger receiver? I gave up on this in favor of quick charging at lunch
For those that have gone down this route a couple of questions please:
1) How has the QI receiver lasted if the phone is submerged? Did it just need rinsing in clean water and drying out or was it screwed?
2) Is there a maximum thickness to the case which I should worry about?
3) What sort of time does it take to charge up?
4) If I'm playing music or video will it charge quicker than I'm draining the battery?
Thanks!
I just got this one:
ASIN=B01E15W2ZA
and it works good with my Xperiy Z5 Compact. It charges with about 600...700 mA, something les than with a normal charger, but absolutely enough for my purpose - modt of the time I just want to recharge over nitght. It goes up to 100 %.
The included power bank feature can also be used via Qi, but probably smarter it to use it with a cable to not waste Your capacity as heat.
By the way: Even NFC works through the receiver!
But still I folded the receiver cable twice to position the receiver on the lower edge of the beackside of the phone. This way I avoid the risk, that NFC sensitivity gets reduced and I can line up the phone better on the charger, because it must lay quite exact on the cross.
i have qi charger for 5c and it works. i order plate fro qi and qi charger from ebay. just this qi sticker must set under some case. another way it is possible to broke it.
ATTEMPTED HARDWARE MODDING - the title may be a bit misleading
Longtime Note series diehard fan here. I absolutely cannot live with wireless charging, that's even more important to me than removable batteries, I have had 2 phones have constant problems with wear on the USB port, and my lifestyle is already adapted around Qi charging, I have multiple wireless charging pads, and have, for the past year, never plugged in a USB cable into my Note 3 except for flashing roms and copying backups to my Thinkpad. Now, I am considering a new phone, and my options are either the LG V20, which has no wireless charging but a removable battery, or an S7 Edge with wireless charging and no removable battery.
As title says, I am interested in getting true wireless charging for the LG V20, not some crappy plug-in wireless charging adapter crap. What I'm thinking is finding some point on the motherboard, most likely on the positive and negative terminals of the charging port, and soldering wires to it, and the wires would be soldered to the exposed contact points of an old Samsung Note 3 wireless charging add-on. The same idea has been implemented in a Oneplus One successfully before. Now, obviously, if there were the wireless charging reciever, the metal back cover would be interfering with it. So instead, I will buy a cheap TPU case so that I protect the battery but allowing Qi charging to pass through. Please chime in, and let's facilitate a discussion here. Also, there have been previous threads discussing this idea, including a thread where LG customer service apparently confirmed that LG was planning a wireless charging accessory (in Jan 2017), obviously take this with a grain of salt. The general idea is that either customer service was giving us a load of crap, or LG V20 has the hard ware to do so, but LG never bothered to develop it.
Links:
Similar idea successfully implemented on Oneplus One
https://forum.xda-developers.com/on...ded-internal-qi-charging-to-opo-pics-t2997326
https://imgur.com/a/63Aj7
https://imgur.com/a/jRnN4
Link to old threads discussing wireless charging, consensus is that V20 has supporting hardware but LG never bothered to enable it
https://forum.xda-developers.com/v20/help/wireless-charge-cover-lg-v20-t3597275
https://forum.xda-developers.com/v20/how-to/lg-v20-wireless-charging-support-t3486488
https://forum.xda-developers.com/v20/help/updates-wireless-charging-cover-t3531026
Note 3 wireless charging reciever:
https://www.aliexpress.com/item/QI-...-cf12-4436-acf4-0b573ca88c15&rmStoreLevelAB=0
LG V20 Case replacing the metal back cover:
https://www.aliexpress.com/item/HAT...-6de9-4b36-9897-f9b51a169e33&rmStoreLevelAB=0
Also, something else to note, would wireless charging be Qi or PMA standard? Back in the LG G3 days, the AT&T and Canadian versions (which was basically the same phone) had a PMA reciever, whereas Verizon and other variants used Qi.
RQYP said:
Also, something else to note, would wireless charging be Qi or PMA standard? Back in the LG G3 days, the AT&T and Canadian versions (which was basically the same phone) had a PMA reciever, whereas Verizon and other variants used Qi.
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Possibly varying by region, but very possibly both. While Qi seems to be ahead there are now quite a number of chips which implement both, attempting to figure out which standard the other end uses and adapting. Since consensus is only emerging slowly that looks like the way things are going to end.
emdroidle said:
Possibly varying by region, but very possibly both. While Qi seems to be ahead there are now quite a number of chips which implement both, attempting to figure out which standard the other end uses and adapting. Since consensus is only emerging slowly that looks like the way things are going to end.
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Ok, thanks for replying. So now, the question is, how to proceed? Should we try to implement the mod like the OPO I was discussing in the original post? Or should we try to find the necessary software and hardware to enable purported built-in wireless charging? I personally am in favor of trying to solder a Qi receiver onto the charging port, as my main goal is reduce plugging a cable into the USB port so much, but maybe there is a more elegant solution?
I have attached a picture below with the NFC contacts circled. Do you see any points on the motherboard which could potentially be wireless charging contact points? Or are people suggesting that those 10 random metal dots distributed around the phone, are the wireless charging contact points? Because that would just be hella weird.
Post #19 on this thread is what I'm referring to for a reference image: https://forum.xda-developers.com/v20/how-to/lg-v20-wireless-charging-support-t3486488/page2
Also, here are some pictures of charging ports for LG V20. Do you see anywhere that could potentially be used to solder wires on, to attach to a 3rd party Qi receiver? Personally, I am guessing that only the AT&T variant will be Powermat, everything else, like int'l or Verizon variants will support Qi standard. Knowing LG and their tendency to reduce a load of regional variants with random differences (like the LG G6 wireless charging/DAC/64gb storage debacle).
Another wireless charging thread. Pic on page 2. https://forum.xda-developers.com/v20/help/lg-v20-wireless-charging-t3471387/page2
Anyone else have anything to comment on? If not, I'll probably just solder wires to my charging port once my LG V20 arrives off of aliexpress (which might be a while)
I just got my v20. I'll be poking at it over the next couple of days to see what those points actually do.
deadlyquirk said:
I just got my v20. I'll be poking at it over the next couple of days to see what those points actually do.
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Hey, that's great! I have access to AutoCAD inventor, so if you can provide me with the exact dimensions I could try to make a 3D printed model of a non-metal LG V20 back cover, over Christmas break. Hopefully I will have time...
I didn't get anything obvious when I checked with the multimeter. I'm going to probably tear this down on Monday and see if I can find anything conclusive. See if the traces from those points go anywhere.
deadlyquirk said:
I didn't get anything obvious when I checked with the multimeter. I'm going to probably tear this down on Monday and see if I can find anything conclusive. See if the traces from those points go anywhere.
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Ive had a look inside my phone and most of the pins seem to be for grounding, connected through a resistor or capacitor. I dont believe there is any pins for qi charging. Look at the pins for the nfc, they are located close to one another, the rest are spread out at almost regular intervals to provide grounds for the battery cover. Also, i dont think connecting a qi receiver to the usb is a good idea, it may confuse the port into thinking an accessory is connected, and i dont think the receiver would like getting backfed 12v when you connect the phone to a QC charger. I think Real qi charging seems unviable for the v20, Unless someone has a service manual to check the schematics.
ivoh95 said:
Ive had a look inside my phone and most of the pins seem to be for grounding, connected through a resistor or capacitor. I dont believe there is any pins for qi charging. Look at the pins for the nfc, they are located close to one another, the rest are spread out at almost regular intervals to provide grounds for the battery cover. Also, i dont think connecting a qi receiver to the usb is a good idea, it may confuse the port into thinking an accessory is connected, and i dont think the receiver would like getting backfed 12v when you connect the phone to a QC charger. I think Real qi charging seems unviable for the v20, Unless someone has a service manual to check the schematics.
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I wish I had seen this before taking my phone apart. I didn't see anything from the pins going to any of the chips on the board either. Dunno why they skipped wireless charging on the v20.
Hi,
I want to retrofit wireless charging capability with one of those thin receivers you can put between your phone and the case and then plug into the usb port. The only thing that worries me is a coil or antenna or something which is sitting on top of the battery. I can be seen in this disassembly video: https://youtu.be/kNzDbb-lJzs?t=42 This would probably be covered by the added receiver. What is this? Would covering this up be a problem?
HilmarG said:
Hi,
I want to retrofit wireless charging capability with one of those thin receivers you can put between your phone and the case and then plug into the usb port. The only thing that worries me is a coil or antenna or something which is sitting on top of the battery. I can be seen in this disassembly video: https://youtu.be/kNzDbb-lJzs?t=42 This would probably be covered by the added receiver. What is this? Would covering this up be a problem?
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NFC.
It doesn't seem like a good idea to me.
Mhm, ok. If I don't want to use NFC anyway would this be a problem? I mean, the phone should be able to handle beeing placed on a qi charging station (if someone is ignorant that it does not have this function) without induction of any harmful currents into that antenna, right? So I would just loose the NFC functionality if I shield it with the receiver patch.
HilmarG said:
Mhm, ok. If I don't want to use NFC anyway would this be a problem? I mean, the phone should be able to handle beeing placed on a qi charging station (if someone is ignorant that it does not have this function) without induction of any harmful currents into that antenna, right? So I would just loose the NFC functionality if I shield it with the receiver patch.
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My reaction was not about NFC, it is even possible that it will continue to work, maybe it will be less sensitive. I just expressed my opinion that I personally dislike your intention, because I don't think wireless charging is a killer feature for the ZF6 that we have to regret not having. Moreover, our battery size and space in which it is located and cooled, and so on is not at all adapted for continuous wireless charging and higher charging temperature.
After all, we don't charge so often with our big battery, and when you charging by cable, you charge more environmentally and faster than with the best wireless charger. That is to be remembered, and that is what I meant and what was my point.
For me NFC and big battery are killer features, but wireless charging isn't.
_jis_ said:
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For me NFC and big battery are killer features, but wireless charging isn't.
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OK, I am getting your point. I just bought this phone, and was not used to having a battery that can go two days easily. I have qi chargers scattered around everywhere (car, office, living room ...) to top up my battery whenever I lay my phone down somewhere. That is starting to seem a bit pointless. I just discovered the function to slowly (and therefore least damaging to the battery) charge and reach 100% at a specified time. Perfect for overnight charging.
Let's give it a few more days to see if I still feel the urge to retrofit wireless charging.
But from the purely technical standpoint, I had another thought. The qi charger only switches on the charging field when it detects a compatible device set down on it. So it would not do that if an untouched Zenfone 6 would be placed on the charger, and there would not be any danger of inducing currents into the NFC antenna and damaging something. Now, if I retrofit a charging pad the charger actually does produce a field when the phone is on it, thats the whole point. No idea how much current would actually be inducted in the NFC antenna, but I am very certain it is not zero. Does someone have the technical background to at least make a guess?