A possible way to fix touch screen issue - Nexus 7 (2013) General

Before the post, I'd like to know if the wireless charger works in power off mode?
If yes, then possibility unlike to solve in below way.
As suffering, when touch screen unresponsive (while the wireless charger light will blink), previously way is to cycle reboot and keep the pad vertical. In most of cases it will work.
And my idea is to turn off the wireless charging function from kernel.
Nexus 7 2013 uses TI BQ51051B as the wireless charger and it controlled by PM8921 chip.
So possible to disable wireless charger config in flo? But I saw no CONFIG_WIRELESS_CHARGER in flo setting, why?
I don't have a wireless adapter to test, anyone available to recompile the kernel to try to disable it?

CONFIG_BATTERY_ASUS_BQ27541=y
this is the acture config to disable for the wireless charger

You can just remove back cover
As i remember from other phone, all the Qi charger things just connected to micro-usb port.

Related

[Q] VS980 Wireless Charging Stopped Working

I've been using wireless charging at home and work for over a month and love it. But it stopped working a few days ago, and the device no longer detected when placed on a wireless charger. Then it worked sporadically for a day, and now it's dead again. Any suggestions or diagnostics I can run to figure out if it is a hardware or software issue? TIA
Sorry to ask ... but it could be the charger itself ?
I have a cheapo charger and it can act up sometimes. Luckily, it has a LED ... if the light stays on after I remove the phone then I
will need to reset the charger (or it won't charge the phone next time).
I don't think it is the chargers, since the phone started failing on both at the same time and the Nexus 7 still charges fine on the one I have at home. I wonder if there is a software setting to turn wireless charging on/off or something?
I think that the problem may have been static for some reason. I have found that rubbing the back of the phone with a cloth (my shirt) before putting it on the wireless charger gets it to work. This holds true with or without bumper case on the phone, and works for my home and office chargers. Strange.

[Q] daydream with wireless charging

I have the wireless charging back and when I place the phone on the charging unit a popup comes on saying that it is within proximity of wireless charging, the phone starts charging.
Now to my issue, daydream does not automatically come on.
Ideas ?
PolarBearMI said:
I have the wireless charging back and when I place the phone on the charging unit a popup comes on saying that it is within proximity of wireless charging, the phone starts charging.
Now to my issue, daydream does not automatically come on.
Ideas ?
Click to expand...
Click to collapse
Hey PolarBearMI, I believe the daydream feature is disabled on wireless charging, here's why: you get 2A on wired charging, I'm guessing that with the screen on with daydream it cuts it to 1.5A easily slowing the charging down. Now on wireless charging you have from .75 to 1A depending on your station and card setup. If the screen would be on during that it would basicly take the charging to a crawl. Just a theory. Don't think there's a solution to get it going.

wireless charging

hi
could anyone recommend a wireless charger suitable for yota phone 2 which can be purchased in uk
never bought one before but guessing that there must be a specific output mA/h and frequency ?? that must be compatible??..
seen lots on ebay suitable for galaxy and iphones but dont know if compatible
thanks for any help - (nothing on yota site to buy)
I've bought a Qi charger like this one:
http://www.amazon.co.uk/Wireless-Charger-Google-Samsung-BC252R/dp/B00FEAH0WW/
I use it mostly to recharge my Moto 360 smartwatch, but I've used it with the Yotaphone 2 as well, it seems to work fine.
The nice thing is that it's really compact, although it may not be what you're looking for.
I think that basically any Qi charger should work fine, I'm not aware of any frequency/voltage/output issue when using Qi chargers, although those sold online usually claim compatibility with a specific set of devices.
Nice
I can confirm that the Qi charger works well, the Yotaphone does automatically predict that the phone will be charged in a ridiculous amount of time, like 4x as fast as using a high current cable charger, but it does seem to be the fastest way of charging the device. My charger was from eBay and didn't cost a lot about GBP7.
Is there no official wireless charger?
Sent from my YD201 using Tapatalk
There's the official wireless charger sold by Yotaphone on their website, but it doubles as a portable USB/Qi battery charger, so it's definitely bulkier than most Qi chargers found on the net. It does work as expected, though...
I've been using this for some time now, but I rarely use the Qi function (I often use my phone while charging it, which requires the USB cable unless you can tap the phone's screen without moving the phone on the Qi pad, which I consider on the slippery side).
Also, the bulk/energy capacity of the official battery isn't the most impressive I've seen, wchich is to be expected since they had to fit the Qi electronics on top the battery cell under the cover.
Overall, still a useful & stylish piece of hardware, though...
I bought a Wireless Charger from Samsung and had the same problems which some of you described. The Phone started charging and then stopped with a blinking charger after 20 Seconds.
My solution was: Since this was a QI Charger with an output of 2A, i made the error of using a USB Charger with output of 1,5A. I switched the usb-charger and used one with an output of 2A and connected it to the QI Base.
And now it works. So my suggestion: Use a Charger with 2A.
My very cheap Chinese wireless charger is now working well after I gave up on it for not charging. As in other cases, the yotaphone has a mind of its own and takes a few days to change.
I bought Spigen Wireless charger from Amazon UK. Though Yotaphone detects and charges, I see the below issues
1. The charging time from ZERO to 90 takes around 3 hours. The remaining 10 percent takes ages (more than an hour)
2. When the phone is charging and if the screen turns OFF, the charging stops which makes the screen turns ON with LOCK Screen. Again the charging starts and this cycle continues. I had to use an app called Snoozy Charger which minimizes this issue (by turning the screen OFF when charging is detected)
But, one good thing I noticed with this ultra slow charging: The battery life looks much better. For example, I had a screen time of 45 minutes before the charge dropped from 90 to 87.
If somebody need original Yota mobile charger, I can order it from Yota directly.
Well, since the thread has already been necromanced:
I understand fairly little about wireless charging but am I right to assume that all wireless chargers require the phone to lie on it on its back? Or is that due to my charger being too weak or cheap or whatever? I would love to charge the phone wirelessly with the epd being visible because, after all, that side has all my notifications and the time and what have you.
i use this one from the IKEA
works great on my YotaPhone 2
http://www.ikea.com/gb/en/products/...pad-for-wireless-charging-white-art-60308308/
( also working on my Windows 10 mobile phone & samsung s7 )
micheal
megasounds said:
i use this one from the IKEA
works great on my YotaPhone 2
http://www.ikea.com/gb/en/products/...pad-for-wireless-charging-white-art-60308308/
( also working on my Windows 10 mobile phone & samsung s7 )
micheal
Click to expand...
Click to collapse
But does it work while the phone is lying on it's front screen? So that the EPD is visible while charging?
There is definately variations between chargers. A cheap ebay charger that I have does not work with some cases on my other phone with Qi charging. But a more robust three coil Nokia wireless charger works perfectly with it. Unfortunately my Nokia wireless charger does not work with YotaPhone face down... the charging light on the charger keeps blinking so it is close to charging but not enough. Some a little more powerful charger would be able to do it I think. Unless the desing of Qi only works on one side of the phone.
DeVadder said:
But does it work while the phone is lying on it's front screen? So that the EPD is visible while charging?
Click to expand...
Click to collapse
yes its working face down with my IKEA Qi charger
micheal
Not charging laying on the front on my IKEA nordmarke​ triple pad. On the back it charges fine.
knooier said:
Not charging laying on the front on my IKEA nordmarke​ triple pad. On the back it charges fine.
Click to expand...
Click to collapse
its charging while laying on the frontscreen on my IKEA SINGLE pad. I do not know for the triple one ??
Again the single pad is working great
Great it works on an single pad ! But I wanted to use it mobile..like in my car or motorcycle.
Sadly i know now it doesn't use an usb kind of charger but an 19 volt (??) adapter.
knooier said:
Great it works on an single pad ! But I wanted to use it mobile..like in my car or motorcycle.
Sadly i know now it doesn't use an usb kind of charger but an 19 volt (??) adapter.
Click to expand...
Click to collapse
The only trick is to supply min required amperage for the charger requirements. You can find exact output values on the wireless charger. General manner: input amperage must be near/high as far as the ouput amperage. My Chinese cheap wireless charger output is 5V and 1.5A. And i can use it with 5v 1.2A AC charger problem-free.
Update:
i discovered that the cable is also an issue for the reason. If you connect a normal power support only cable to the Qi charger, you will probably be faced the problem. But if you connect a Data cable, you can use your PC's usb with your Qi charger. I can use it now like the way.
How can I disable display wake-up and stay-on, if QI-charging? (Android 6)

Nexus 2012 in my car, help with OTG charging and waking up.

First: How do I get my Nexus 7 to charge from the OTG cable? I can connect USB devices to it but connecting the power cable of the Y doesn't seem to do anything.
Second: Is it possible to wake from tapping?
Related threads:
http://forum.xda-developers.com/showthread.php?t=2776308
(references using the Nexus 2013)
All other threads I've found relating to the OTG cable charging reference Timur's ROM which is no longer available. Is there another solution?
I've got a Nexus 2012 Wifi and all the hardware (USB DAC, amp, wiring, etc) to install this in my car. My last 2 hurdles before ripping the dash apart is the charging while connected to a USB hub and how to wake the tablet up. I was afraid of leaving the screen on all the time would burn it out and drain the battery. I wanted the ability to turn the tablet on without having the keys in the ignition. I guess I could forego that requirement and just have the tablet always on and only turn on in the ACC position.
For the wake I am thinking of creating a mechanical switch that activates the button. The power button on the tablet now will be concealed by the bezel once installed in the dash. There is an app that works but it doesn't really wake from sleep but rather creates a black screen that is tappable. I really wanted the thing to go to sleep and then wake with a tap.
I also wanted the newer android version, 6 or greater. I flashed with CM 7.1 and it works great save the two issues I'm having. Even if I had access to Timur's ROM it hasn't been updated since 4.something so I would want it newer anyway.
Any ideas or suggestions?
Thanks in advance.
I installed the BeanStalk 6.19 and I am now able to OTG charge and double-tap to wake device (no extra settings as it was included with the ROM).
My problem now is it seems to only want to OTG charge when I first plug in the OTG cable to the tablet. If it's charging and I turn off the power to the OTG (like disconnect the charging cable connected to the OTG) and then plug that charging cable back in it will not charge until I reconnect the OTG cable to the tablet. I wanted to hide the cable behind the bezel of the dashboard.
I was hoping to switch the power to the USB hub that is connected to the OTG charge cable with the ACC line from the ignition. This way I wouldn't be draining the battery at all when the keys are not in the ignition. It's only 12.5 watts so I guess I could leave it on all the time. It's getting cold here this time of year so I didn't want any type of extra drain on the battery when I didn't need it.
Any suggestions?

S9+ Wireless charging problem, PLEASE HELP!

Hello,
My S9+ has a problem when using wireless charging, the phone will auto unlock.
Does anyone know the reason for this or it's just me having this issue?
:silly:
If you mean does the screen come on, then yes. However I still need to swipe to unlock.
If you mean does the screen come on, then yes. However I still need to swipe to unlock.
Chad Paul said:
Hello,
My S9+ has a problem when using wireless charging, the phone will auto unlock.
Does anyone know the reason for this or it's just me having this issue?
:silly:
Click to expand...
Click to collapse
What phone case do you use?
I not sure if your phone case has a magnet it may effect with wireless charger, because wireless charger use electromagnets power
Did you change the "Developer options" menu? There are "Stay awake" mode, and the screen will never sleep while charging.
Also, it can use "Face recognition" when you look at it
Any case that is not official and is more than like 5mm thick will affect the wireless charging abilities of the S9+.
Having root will stop the option to enable fast wireless charging appearing in the accessories section (In fact on g9650 Accessories no longer shows in settings after root is active - at least in my experience).
Paid 2500 Pesos Argentinos for my Samsung Wireless charging stand, didn't even come with a cable in the box and is Micro USB so my USB C won't run it. Very disappointed in this and the strength of the charging cable in general, but the cost and treatment of consumers in Argentina is not the greatest anyways.
Edit: I rescind my comment about the Accessories section not showing, this was my own stupidity. Also, changing the USB cable of the fast charger to a different one has solved the fast charging issue.
Still think for the amount of money that was paid for it a cable should have been included

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