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..
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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.
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tft said:
no there is no difference, just different wireless frequency.
here is a quote of mine in another thread:
and
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Will PMA survive with the help of Galaxy S6?
feihu989 said:
Will PMA survive with the help of Galaxy S6?
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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.
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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?
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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.
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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.
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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...
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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).
Related
Being the DIY kind of guy, I'm wondering if anyone tried to disassemble the Touchstone charger and post a schematic so that anyone with some electronics skills can make their own, in whatever shape or colour they desire.
Just wondering.
Ifixit has a pre touchstone tear down. They are similar, maybe you can request that site complete one on the TouchPad version.
I just looked mine over, there are no exposed screws. Any screws must be under the rubber foot, or the back may snap off. I'm not risking breaking mine. But, for $40 you could find out yourself
Sent from my Galaxy S II (i777)
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
teddyspaghetti said:
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
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Not sure about the truth of that, because I think it has something to do with the actual cycles. I'm not 100% sure so if I'm wrong someone correct me.
The OP was referring to the wireless induction charging in the Touchstone, not just a generic USB charger.
As to the whole more amps = lower health battery debate, I won't touch that. I've seen "proof" both ways. What I know is the OEM charger is 5.3v at 2 amps. I am going to trust HP that is the proper specs. Plus, any "smart" device doesn't pull more amperage than it needs, so its software controlled.
Sent from my Galaxy S II (i777)
Indeed, I am not talking about the wired charger, I am talking about the wireless Touchstone charger.
50 USD wouldn't be a problem for a Touchstone. However HP hasn't brought Touchpad's or accessories in Romania and offer no support for them, and I don't want to wait for 2 weeks for delivery.
And I also am the DIY kind of guy, and in the near future I'll be designing and building a custom desk which I would like to include a nice built-in stand for the Touchpad.
teddyspaghetti said:
All you need is a USB source with an output of 5.3V and 2A. But on that note, doesn't the higher level of amps charging the TP batteries more quickly kill the overall battery life of the batteries?
I use other brands of usb chargers unless i'm in a hurry, because the TP official charger will get it all juiced up in no time. Lower amperage, slower charging, longer overall battery life (i presume.)
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Click to collapse
Any old 5.3v/2A source will not give 2A to the TP. The device relies on switch signaling on the data lines which aknowledges that it is connected to the correct (ie HP barrel) charger and this allows the full charge rate to be applied.
In all other cases the charger only gives a low level trickle charge with the resulting longer charge times.
LiPo batteries and their charging profiles are very efficient and are perfectly capable of handling higher charging currents without detriment.
If they become very drained these higher currents are required to start the charge cycle whereas lower power chargers would not.
This thread is not about charge current or cycles, not sure why you haven't gotten a real answer yet, so I decided to register to give you one.
Even if you had the schematics and a source for the components, winding the coil for the inductive charging would be your biggest issue. At best it probably wouldn't be efficient enough to be worth it and it would likely take a long time to charge if it did at all. All the parts and work it would take for a kind of crappy result wouldn't be as good as just spending the $50 or whatever.
That's the negative side though, so don't get me wrong. If I could I'd totally be building one myself as well. I wish more people were into DIY stuff like this. I also really like the idea of building it into a desk and you may be able to do that with an official Touchstone charger.
FjarrKontroll said:
This thread is not about charge current or cycles, not sure why you haven't gotten a real answer yet, so I decided to register to give you one.
Even if you had the schematics and a source for the components, winding the coil for the inductive charging would be your biggest issue. At best it probably wouldn't be efficient enough to be worth it and it would likely take a long time to charge if it did at all. All the parts and work it would take for a kind of crappy result wouldn't be as good as just spending the $50 or whatever.
That's the negative side though, so don't get me wrong. If I could I'd totally be building one myself as well. I wish more people were into DIY stuff like this. I also really like the idea of building it into a desk and you may be able to do that with an official Touchstone charger.
Click to expand...
Click to collapse
While the OP was not about charge current or cycles I do sincerely hope that you understand the value of correcting misinformation and wrong assertions about any aspect that may raise it's related head in these threads.
To jump into a thread and the forum with such a comment is perhaps an indication of the levels of accepable politeness at large in the world today.
But I for one don't take too kindly to it.
But then us 'older' members may be a little too sensitive.
Any impropriety and the mods will deal with it!
*WARNING*
DO NOT SUBMERGE YOUR SAMSUNG GALAXY S5 WITH THIS WIRELESS RECEIVER PAD INSTALLED. I HAVE TESTED IT AND IT DOES LEAK.
IF YOU DO, YOU'VE BEEN WARNED ABOUT THE POSSIBLE OUTCOME
Water death thread --> http://forum.xda-developers.com/showthread.php?t=2741481
-----------------------
For the Note 3, I purchased about 3 different receiver pads over the course of it's life. Every pad pretty much had it's own set of pros and cons. For the S5, this is the product I started with. If I purchase any other ones, I'll add to this.
Cost: Around $7-$8 shipped
Link: http://goo.gl/JcDc6t (generic search results... if you want the one in this video, just match it up with the pictures... auctions start and end frequently)
Kind of hard these days to film with my daughter around, but it's better than going to work and coming home and hiding in the basement. I do apologize about that.
Overall assessment for you guys is that it does an okay job with charging. Exactly what you'd expect with wireless charging if you're familiar with it. NFC gets a one out of four stars though. Don't expect to enjoy using NFC while using it. If you do get it to work, it's because you really fiddled around a lot with it.
Finally a review, thanks. 1A charging is more than decent i'd say. my old HTC wall adapter chargers are 1A anyway.
Obviously everyone should assume water resistance is void with 3rd party qi receivers. I personally don't use NFC for any reason so there is no downside for me. but yea, i think that's about it, i just wanted to see it actually working and i appreciate it. very straight fwd. cheers. :good:
chillsen said:
Finally a review, thanks. 1A charging is more than decent i'd say. my old HTC wall adapter chargers are 1A anyway.
Obviously everyone should assume water resistance is void with 3rd party qi receivers. I personally don't use NFC for any reason so there is no downside for me. but yea, i think that's about it, i just wanted to see it actually working and i appreciate it. very straight fwd. cheers. :good:
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Click to collapse
Welcome.... I agree. I should add a blurb about the IP67 cert and the effects of the QI receiver. :good:
I treat my phone normally, haven't had a phone with ip certification until this S5, and never had a phone that went swimming from my very first phone, so I don't care about the ip67.
What would happen if you had the phone plugged in charging and you set it on the wireless charger?
Zombie apocalypse
Sent from my SM-G900T using Tapatalk
---------- Post added at 03:49 AM ---------- Previous post was at 03:48 AM ----------
Seriously I don't know, just talking ****.
Sent from my SM-G900T using Tapatalk
mikeeey said:
What would happen if you had the phone plugged in charging and you set it on the wireless charger?
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Click to collapse
That's a good question actually because if you have the phone hooked up to do data transfer and placed it on the wireless base then you would have the same scenario. There must be some intelligence in the phone to either cope with a charge from two locations or to disable one if two are present.
Thomasba said:
That's a good question actually because if you have the phone hooked up to do data transfer and placed it on the wireless base then you would have the same scenario. There must be some intelligence in the phone to either cope with a charge from two locations or to disable one if two are present.
Click to expand...
Click to collapse
I'll try this sometime this weekend.
chillsen said:
Finally a review, thanks. 1A charging is more than decent i'd say. my old HTC wall adapter chargers are 1A anyway.
Obviously everyone should assume water resistance is void with 3rd party qi receivers. I personally don't use NFC for any reason so there is no downside for me. but yea, i think that's about it, i just wanted to see it actually working and i appreciate it. very straight fwd. cheers. :good:
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Click to collapse
I would use NFC if more people took ISIS payments. Most of the time they don't. If they have an NFC compatible POS it's either shut off or not allowed.
I think it has to average out to 640mA. From what I've read the kernel doesn't allow for higher current. Then again according to this app it was charging about 1% a minute which was the same as the charger...
chrisngrod said:
Welcome.... I agree. I should add a blurb about the IP67 cert and the effects of the QI receiver. :good:
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Click to collapse
How is water resistance comprimised with the Qi receiver? Does the receiver stay inside the sealing of existing cover?
yoonus said:
How is water resistance comprimised with the Qi receiver? Does the receiver stay inside the sealing of existing cover?
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Click to collapse
Well I think in my blurb I noted that it is not recommended to submerge the phone afterwards. I would imagine that officially any company that says it doesn't effect it would have to get the whole system re certified.
It is within the boundaries of the seal. Who's going to be brave enough to submerge for 5 minutes and see if any water seeps in? Don't volunteer me please. I might do a 2 second plunge and keep on going from there... 5 seconds, 10 seconds, 60 seconds and 2 min.
Does wireless charging coil affects wireless resistance?
SandeepEmekar said:
Does wireless charging coil affects wireless resistance?
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Click to collapse
The answer is very likely yes If you are not using a official Samsung accessory.
Alright. I did a test run with the QI receiver pad in. My wife was not happy about this at all. She hasn't even tested the phone without the pad in.
My video will consist of a dunk test, 1 min, 2 min, and 5 min submerging. In addition to that the wireless battery pack will be submerged in a zip lock bag. If all goes well the phone should be able to charge while underwater. That should be the ultimate A OKAY right?
WARNING
DO NOT SUBMERGE YOUR PHONE WITH THIS INSTALLED
I wanted to get this notice out before any of the video detailing what exactly happened. Just in case it can save someone. Details will follow shortly.
Video is below:
Starts at 1:16. You can hear the audio get worse.
Details:
http://forum.xda-developers.com/showthread.php?p=52421677
I wanted to separate out the details before someone kills their daily phone and is left with nothing or has to pay a huge deductible.
I like this charger
cos it claims to charge just like the wire
has anyone tried it ?
http://www.youtube.com/watch?v=IFhhPQxnLuc
or are there any others that claim Fast Charging ?
Thanks
Fast charging related to Charging efficiency. I find this one claimed as >73%. The price is also good, only $6.49 http://bit.ly/1pm8TCs
Maybe I'm expecting too much, but the way I understand Qi wireless charging is you should be able to use any combination of transmitter/receiver you wish and it should just work.
Well, as I'm sure some of you are aware, that does not appear to be the case with the Note 4. I have tried two 3rd party receivers with different bases and have been unable to achieve any sort of consistency.
http://www.amazon.com/gp/product/B00PUA06TA/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
http://www.amazon.com/gp/product/B00OFKS66G/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
Above are the 3rd party receivers I've tried. You either have to off center the receiver with the base, or find a sweet spot that makes it look like if you so much as sneeze the wrong way the phone will fall off. NOT ideal. Most 3rd party receivers I have looked at employ a similar design.
Or you have a situation like mine where a base just won't work due to alignment issues. This is the case with the iOttie Easy Flex Wireless Car Charging Mount. The coil in the receiver sits too far to the left (screen facing you), and there's no way to align with the coil on the iOttie properly.
Here's the funny part. I have ZERO issues with the OEM Charging Cover. This thing where Qi is supposed to be universal may be true, but there are strings attached. Until there are no strings, I can't see how phone manufacturers can take it seriously...
I hope that the upcoming Galaxy S6 handles this better than that. It looks promising. It wouldn't be the sole reason I switch to it, but I can do a slightly smaller screen, don't necessarily need the pen, but they are nice. I just wish wireless charging was handled better....
I use the OEM Wireless charging cover and a Nokia base. I have had no issues at all. I would stay away from those cheap Chinese adapter coils. They seem very easy to break, they don't fit well with the stock cover, and are more prone to errors. They only sell for a couple dollars in China so don't expect much.
suggest this https://www.amazon.com/gp/product/B00LE6X5VU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
3 coils.
vertical and horizontal fine. I do have to position it 1 cm to the right or left from center....but still really easy.
jejunum said:
suggest this https://www.amazon.com/gp/product/B00LE6X5VU/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
3 coils.
vertical and horizontal fine. I do have to position it 1 cm to the right or left from center....but still really easy.
Click to expand...
Click to collapse
I just got a Tylt Vu and have to do the same thing when using the Choetech receiver. If I put it upside down it centers perfectly LOL. Nothing of the sort with OEM. What are you using for a receiver?
craigg1 said:
I use the OEM Wireless charging cover and a Nokia base. I have had no issues at all. I would stay away from those cheap Chinese adapter coils. They seem very easy to break, they don't fit well with the stock cover, and are more prone to errors. They only sell for a couple dollars in China so don't expect much.
Click to expand...
Click to collapse
When you're talking about the coils, are you referring to the receiver or the base? OEM covers are made in Vietnam...
Never gonna be as fast as fast charge so till they really step up game it is pointless
BAD ASS NOTE 4 & GEAR S
BACARDILIMON said:
Never gonna be as fast as fast charge so till they really step up game it is pointless
BAD ASS NOTE 4 & GEAR S
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Click to collapse
I don't mind that it doesn't charge as fast. That said how can companies like Tylt claim that their chargers can charge just as fast as wired?
http://www.amazon.com/gp/product/B00DG8NUC8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
From the FAQ page on Tylt's website:
Q: How long does it take to charge my phone with the VU?
A: The VU is designed to provide as much power as your standard USB charger (1 Amp) and will charge as fast as your USB charger as long as your phone is designed to accept that much power.
http://tylt.com/faq/#vu
Granted, Quick Charge 2.0 is most likely not in there, but doesn't that only work up to 50%?
diehardbattery said:
I don't mind that it doesn't charge as fast. That said how can companies like Tylt claim that their chargers can charge just as fast as wired?
http://www.amazon.com/gp/product/B00DG8NUC8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
From the FAQ page on Tylt's website:
Q: How long does it take to charge my phone with the VU?
A: The VU is designed to provide as much power as your standard USB charger (1 Amp) and will charge as fast as your USB charger as long as your phone is designed to accept that much power.
http://tylt.com/faq/#vu
Granted, Quick Charge 2.0 is most likely not in there, but doesn't that only work up to 50%?
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Yeah most regular phones. From 6 years ago lol. It a fine print thing and people not knowing their phone.
BAD ASS NOTE 4 & GEAR S
diehardbattery said:
When you're talking about the coils, are you referring to the receiver or the base? OEM covers are made in Vietnam...
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Click to collapse
I'm referring to the receivers. My experience has been that the OEM covers are more durable than those cheap vinyl covered coils that one mounts behind the stock battery cover.
---------- Post added at 03:41 PM ---------- Previous post was at 03:32 PM ----------
BACARDILIMON said:
Never gonna be as fast as fast charge so till they really step up game it is pointless
BAD ASS NOTE 4 & GEAR S
Click to expand...
Click to collapse
Wireless charging is not as fast as wired charging but it sure is convenient. I hate having to plug and unplug the phone all day. With wireless charging I just make it a habit to always leave it on the charging pad when I can. That way my phone is always at 100% when I leave. My OEM fast charger is still in the box unused. I got a deal on the Nokia pads a year or so ago and only paid $5 a piece for them direct from AT&T. At that price it's easy to place them in multiple locations such as the living room, bedroom, office, car, etc.
craigg1 said:
I'm referring to the receivers. My experience has been that the OEM covers are more durable than those cheap vinyl covered coils that one mounts behind the stock battery cover.
---------- Post added at 03:41 PM ---------- Previous post was at 03:32 PM ----------
Wireless charging is not as fast as wired charging but it sure is convenient. I hate having to plug and unplug the phone all day. With wireless charging I just make it a habit to always leave it on the charging pad when I can. That way my phone is always at 100% when I leave. My OEM fast charger is still in the box unused. I got a deal on the Nokia pads a year or so ago and only paid $5 a piece for them direct from AT&T. At that price it's easy to place them in multiple locations such as the living room, bedroom, office, car, etc.
Click to expand...
Click to collapse
I plug mine in over night and go all day. That slow charge is gonna have issues charging a dead battery in 5-6 hours
BAD ASS NOTE 4 & GEAR S
I have the same QI pad in ur first link. Works gr8 on mine. Now I'm using a different receiver. The first one I bought was the same slmpwrcard u got. Lots of issues with it, until it just quite. When it was kinda working, hit or miss, I measured the voltage the receiver sent to battery when connected with charger. It was low. Should be 5v, I was getting right at 4v, now it only puts out 1.7v, and won't even work. Below is the one I bought to replace. Works perfect! http://www.amazon.com/gp/product/B00P48BIFY/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
I have 7 QI chargers, and they all work well. By the way, the QI pad u linked is a 3 coil. Also it only makes sense u may have to put the phone on QI charger a lil offcenter because the coil in receiver is offcenter.....
I bought the Yoo Tech wireless receiver and LagaLake wireless charging pad. There's a slight bulge in the back of the phone and I have to put the phone on the charging pad slightly off center. In the end, it was more work than just plugging the phone in. So, I'm back to using my fast charger. I'll have to get the official Samsung wireless charging back and see if it works better.
This is huge and I am not sure if the S6 is the first to do it, however i think it's very important to know that there are two different popular wireless charging capabilities and the S6 can be charged from both. I think PMA charging is making a bigger commercial push such as wireless charging stations at Starbucks, Mcds, etc.
Can't wait to see which chargers work better consistently, Qi or PMA, looking forward to the early adopters' reviews.
anyone know what the best wireless charger available is?
haldi15 said:
anyone know what the best wireless charger available is?
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Click to collapse
"Best" is subjective, therefore the question isn't actually possible to answer correctly.
haldi15 said:
anyone know what the best wireless charger available is?
Click to expand...
Click to collapse
Poetique said:
"Best" is subjective, therefore the question isn't actually possible to answer correctly.
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Click to collapse
I agree, we will have to see which 3rd party Qi/PMA charger, if not for the Samsung OEM, will cover these (personal) expectations:
How hot will my phone heat up? Will it be too hot during charging that it will make me worry?
How fast can it charge? 1A? 2A?
How small and slim is the actual charger?
How strong will the signal be that it can charge THROUGH my phone case?
Poetique said:
"Best" is subjective, therefore the question isn't actually possible to answer correctly.
Click to expand...
Click to collapse
best as in which one will charge my phone the fastest wirelessly
haldi15 said:
best as in which one will charge my phone the fastest wirelessly
Click to expand...
Click to collapse
In that case, any ole 1A charger is more or less equivalent to any ole 1A charger.
What separates wireless chargers primarily is how much heat they generate, how well they maintain a connection, how strong that connection is, design functionality (ie, stand-style Vs. flat, magnetized Vs. unmagnetived, etc), size, whether or not they support trickle charging and have overcharge protection, notification-style (audible vs. inaudible, or use of both), NFC support, and what amount of input power they require.
Few simple things to know when charger hunting though (keep in mind this is in general and exceptions exist)...
More coils = larger "good" charging area
More coils = more heat
"Stronger" connection = more heat
Fast charging = don't use wireless at the moment
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.