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[Q] 5V USB charger controlling my WP7. Is this normal?

I just received my stash of charging gear for my Optimus 7 today, bought from DX. Having read everywhere that USB chargers are 5V +/- 10%, and seeing that the original LG charger outputs 4.8V, I thought my purchase was ok and that this charger would work.
Turns out it doesn't. When I connect the phone to the charger via USB, I lose control of the touchscreen and the system gains a mind of its own. I literally just hold my phone in my hand and stare while it randomly enters hubs and either opens an email message or dials someone. The physical buttons still respond correctly, and it's not until I disconnect the charger from the wall socket or the phone from the USB cable that I can regain control of the phone. My guess is it's a hardware fault and not software.
Granted this unofficial charger cost me around $1, but I got some similar 5V car chargers to go with it, and I've never had problems with other USB chargers.
Unofficial charger specs:
Input: 100-240V 0.15A (0.15A) 50-60hz
Output: 5V 1A
Does someone else have this issue? Is the Optimus 7 an uncommon device for requiring 4.8V input instead of 5V?

Your problem is NOT the charger, as that has nothing to do with the functions of the phone.
Your problem is that your LG Optimus 7 E900 is a DEMO unit, with a DEMO ROM. And until you flash a stock ROM onto your phone, you will experience the demo played out while connected to a power source.

You sure? Because I tried it with the 5V 1A car adapters and no problem, and the original 4.8V 1A charger gives me no problems either.
How do I check my ROM version? Firmware is 1.0.7.10, OS is 7.0.7008.0 after the February update.

Can you get us video on this?

Please excuse the ****ty video quality

That is most fascinating. I recommend you stop using that charger on your phone
So, obviously, you do NOT have the demo ROM as I suspected initially.
Since you say it works with another 5V 1A charger, then I think this specific charger may be sending unexpected, random data signals down the USB cable, resulting in the unresponsive and bizarre behaviour. Since the original charger works well, and charges pretty fast, just stick with that for now.
At least you got the update, here in Canada, we are still waiting for our first update.
And your English is so good, and without any accents...Are you sure you aren't from our here (North America)?

This is true magic Really I have no eplanation on this problem. It is only 0,2V

Yeah, and there I was thinking that the whole point of USB charging is that it's universal and totally compatible, no matter what adapter you buy and what cable you use, provided it connects well.
It seems this is not the case, and I'm weary of trying another third party USB charger, as I still cannot tell if this phenomenon is unique to the Optimus 7 or not. Sadly, the only other MicroUSB phones I have lying around don't actually support charging via this port, just data transfer.

i also admit that im "dazzled" by ur -smart-phone...
probably that adapter is"magical" somehow... did u try it on another phone??
+i also use different chargers but never had any abnormalities so far..
Though i use the original chargers that came with my blackberry 9700 and htc-desire, and just checked the blackberry output is 5v!! i cant read the htc...
So, probably that adapter of yours is a "mutant from another place"...
confirm, htc is also 5v...
ps2- i'm also on 7008, and havent got any issues with charging on both 7004 and 7008

The problem is in the charger, it's too chinese . I had this issue with other touchscreen phones, like SE X8, X10... Just change the charger, obviously it has some hum/noise...

lol...
too chinese? lol

im having the same issue when i use the lg power adapter.. it doesnt always happen but when it happen the touch screen just when berserk.
i always thought that it happens on all units. uh oh

To be honest, I thought you were crazy till I bought a Chinese adapter as well. Don't know the voltage, but I'll check it tomorrow. I think it might have to do with the way the unit is shielded, or not. The only time I wiggs out is when I leave it on the desk, but as soon as I pick it up and pull it a few inches away form the desk or any other object it works fine. But as soon as I put it back down, the screen does the same thing.
I have a usb plug that I plug into the computer that didn't do that at the same desk, I'm going to bring in my other charger and see if it rule out the outlet / interference or just the cheap a$$ adapter....
The only part that worries me, and the only reason I might stop using it, is it takes a bit from the time I unplug it to the time the phone realizes it's unplugged and the charging icon stops. Which doesn't happen with any other charger.

I had this problem too.. until I realized it affected my other touch screen devices too (Galaxy S, Galaxy Tab)... Turns out the 5V charger was the problem. Replaced it with a 5V charger of Philips/Belkin/Samsung/LG and all worked..
The unbranded 5V chargers don't work well with capacitive screens as they seem to be letting off some extra current.

Usb c Charging Port loose

I am using the cable provided and an Anker cable. When I put the cable In the phone it stays just fine but defiantly wiggles from side to side. I am worried it will damage stuff inside. Anyone else have this issue.

photodude56 said:
I am using the cable provided and an Anker cable. When I put the cable In the phone it stays just fine but defiantly wiggles from side to side. I am worried it will damage stuff inside. Anyone else have this issue.
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Click to collapse
it's normal, I can confirm because I have usb-c ports on pc and they are same as on phone - wiggly. as long as you cant pull it out with no effort it's ok.

trasheris said:
it's normal, I can confirm because I have usb-c ports on pc and they are same as on phone - wiggly. as long as you cant pull it out with no effort it's ok.
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I was concerned when i was charging the phone and the cable came out at a small angle and not straight out?

photodude56 said:
I was concerned when i was charging the phone and the cable came out at a small angle and not straight out?
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Click to collapse
how small? it moves ~1mm total in both directions. it looks almost straight, I think. if you can move it more then it might not be normal.

I posted about this a few weeks back with this problem. The type c port on the phone is loose but if you can move it left and right and don't feel comfortable I would exchange it. I had this problem and had to exchange mine, Also note not all USB type c cables are the same. Cheap manufacturers will not adhere to the groveless type c male design ( like the weird zig zag on the older USB cables) that will damage the port.
However,The Anker cable you have is probably the Anker power line USB type c to 3.0 and from experience it's a decent cable but no quick charge 3.0 due to the cable adhering to official type c specs which do not allow it to pump so much amps to the phone.
Hope this helps sorry if my grammar is horrible it's like 5 am

Yeah, I have the same thing. I just think ZTE left the port "loose". It fits way tighter on my oneplus 3..

Axon 7 usb type c charging
Hi, I 've bought a new Axon 7 (128gb 4gd Rom or A2017 model). When I shut the phone down and insert usb type c in the port(in one fell swoop and in one push)it starts charging and it shows a battery shape that above it is written "quick charging" in chinese language, but again when the phone is shut down and this time first I insert half of the usb type c in the phone's port and wait until the phone vibrates then I push the other half of the usb type c in the port and this time it also shows a battery shape but above it is not written quick charging in chinese language and also it is actually not charging at all and is stuck at a certain battery percent. I just wanna know if your Axon 7 is and acts the same as mine so please try it and tell me?(I think this issue is because of usb type c cables and nothing is wrong with the phone cause I've seen Lg g5 acts the same when I tried it)

Please Help me - my cube-i7-book wont charge (Wall charger & Usb-c charger )

Hey guys
First, I hope I'm asking at the right forum. I searched at xda and it seems to be closest that fits. If there is a need to transfer it to different forum please do or let me know there to.
Than, I have a big problem and I do hope you can help me with- my Cube-i7-Book don't charge not by the Wall charger nor by the Usb-c charger.
I read a lot about the coube-I7-book and just before they started talking about the new one I bought it (+original keyboard). It arrived and I start using it about 3 moons ago.
1. Last moons I bought a Aukey fast USB desk charger (charge other devises ) and try to charge my cube-I7-book with the USB-c cable I got with my LG smartphone. It looks like the charger is connected but it doesn't charge (I try again and again).
2. Last night my cube-I7-book buttery was very low. I connected it to the wall charger as I always do and went to sleep. In the morning I took a look at the cubeI7-book. I was surprise to see it was still charging. I let it to continue charging. At the evening I checked again. It got 61% and stop charging. I re connect it to the charger and to a different wall socket - there was no reaction. I restart the cubeI7 book -nothing.
3. Could the problem is in the wall charger? If so what different charger l have to look for in order to check?
4. If it's not the charger, what can it be and what can I do to make it work? It is a new device and I really want it to work.
5. What about the USB-c charging? Why isn't it working? Can I do something about it?
Thank you for your help,

Did you manage to fix your problem. I have the same issue. Did you try to use a macbook usb-c charger, instead of a phone usb-c charger?

Only just seeing this, sounds odd. USB charging works well for me (although sometimes I need to unplug and replug the cable if charging doesn't start right away). You need to make sure that your USB c charger provides "power delivery " and in particular, I think, 12v charging, maybe 9v is also OK, but the standard 5v that some USB chargers provide is definitely not enough.
You may have a look at the forum on techtablets.com, there's a subforum for the i7 book with wire a few people active.

Fast Wireless Charging Works but regular Fast Charging does not.

Like mentioned in the title, my fast wireless charging works, and when I put my phone on the pad it tells me it is fast wireless charging. However, whenever I try to use the cable directly and not wireless charging, it becomes cable charging which is incredibly slow (8-10 hours for 50%).
I have obviously checked all the simple steps. I'm using the adaptive charger, I'm using a good cable, fast charging is turned on in settings. I even tried factory reseting my phone but still no luck.
Is it possible that my charging port is loose? And if so is there any way to fix this?
The other possibility I'm thinking of is that my Europe to America convertor might be bad (I have the international version so I have to use the plug convertor) I recently lost the one that came in the box so I had to buy a new one off amazon. Are there such good things as good and bad convertors or are they all the same. And if it is the convertor, why would the wireless charging work but the cable charging not.
EDIT: I just checked plugging in an S6 to the cable and it says fast charging. Does that mean it is definitely the port on my phone?

natantantan said:
Like mentioned in the title, my fast wireless charging works, and when I put my phone on the pad it tells me it is fast wireless charging. However, whenever I try to use the cable directly and not wireless charging, it becomes cable charging which is incredibly slow (8-10 hours for 50%).
I have obviously checked all the simple steps. I'm using the adaptive charger, I'm using a good cable, fast charging is turned on in settings. I even tried factory reseting my phone but still no luck.
Is it possible that my charging port is loose? And if so is there any way to fix this?
The other possibility I'm thinking of is that my Europe to America convertor might be bad (I have the international version so I have to use the plug convertor) I recently lost the one that came in the box so I had to buy a new one off amazon. Are there such good things as good and bad convertors or are they all the same. And if it is the convertor, why would the wireless charging work but the cable charging not.
EDIT: I just checked plugging in an S6 to the cable and it says fast charging. Does that mean it is definitely the port on my phone?
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Click to collapse
May sound odd but have you tried unplugging and replugging the charger in over and over to see if one of those times it pops up as fast charging?
i had this problem with my Note 5 (im in the UK and note 5 was not released here so i had to buy a Russian variant and they sent with 2pin to 3pin adapter)
I don't think i ever had a fix for this other than using a different fast charger without the adapter..
However like you The official note 5 charger with adapter does work to charge my s7e fine though
so our problems seem pretty similar... Maybe buy a new fast charger that doesn't require an adapter and try that?

Slow charge with original charger

Hello,
i'm new here and i'd be glad if someone can help me. So i got my phone a month ago and i noticed that while its charging (with the original charger) and while using it in the same time it almost does not charge at all, still when it's not used it does actually fast charge. As a previous samsung user, i never had this issue with samsung phones (they always fast charged even on heavy use).
That's one problem, the second one is scrolling isn't smooth. Yet my internet speed is 1GB at home although i don't see it related, overall scrolling let's say for example Facebook, snapchat, browser, it gets slow at few times and it ain't smooth like i expected it to be.
My device isn't even rooted so i haven't messed with it anyhow, running usual diagnostics and clearing apps regularly, downloaded just few social media apps so no heavy games on the phone but still i can't figure out if it's just my phone or is it the lg g6 like that.
thank you

1st i wanted to mention maybe the problem is your outlet in house but, yes G6 is charging slower when you use it on your charger.. And when it comes to fast charging to mine it tooks 1h and 40min from 0-100% bit slower than competiton models, but again fast enough.
When it comes on smoothness i am on V10T EU update and the phone has no laggs at all. It did had on past versions. But with this V10T i hadn't had any smoothness issue.. It really is great, and for playing with the phone while charging i wouldn't recommend that. It can really take effect on your battery.
Powered by LG G6

The scrolling lag sounds like there might be something making the phone work hard. Heavy usage would also make it charge more slowly than expected, because some of that power is going to operate the phone rather than into the battery. BUT I don't think it would prevent the "fast charging" text on the display.
It is remarkable how badly-behaved apps can be - I'd remove/disable your apps one at a time and see if one of them is responsible.

Try a fully compliant aftermarket quick charge 3.0 charger, it should charge much faster. Unlike a QC 3.0 charger, the charger bundled with the phone does not include 12V charging mode, so it's not allowing the phone to charge as fast as the phone can handle (the phone is fully quick charge 3.0 compliant and can charge faster than the bundled charger is capable of doing).

KingFatty said:
Try a fully compliant aftermarket quick charge 3.0 charger, it should charge much faster. Unlike a QC 3.0 charger, the charger bundled with the phone does not include 12V charging mode, so it's not allowing the phone to charge as fast as the phone can handle (the phone is fully quick charge 3.0 compliant and can charge faster than the bundled charger is capable of doing).
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Yup, that's true. BUT I have s7 and g6 and both are slowly charging when I'm using them, phone would get too hot if it would fast charge while using it

I appreciate all your replies guys. Thank you.
Although i noted i dont have any heavy apps or heavy usage, the scrolling lag seems like a lag to me because i got used to faster phones before. Or maybe it is the original cable i need to change as you guys said. Anyway thanks again

I also encountered slow charging problems, but it seemed to be the cable, in some position it worked and in some it did not. I've bought an one plus dash cable for about 10 $, red one, and no problems since then. The cable is more thicker and robust, I highly recommend it.

Hi, I've got this problem: sometimes when I plug my G6 to the charger, a popup message comes out saying:
Charging slowly
Try the following if charging is slow:
- make sure to completely remove any water or debris from the USB ports.
- reconnect both ends of the cable.
- use the charger and cable that came with the phone.
Sometimes, instead, the phone starts charging normally with fast charging. If that popup comes out and I try to unplug and plug USB cable a couple of times, the phone starts charging again with fast charge.
Sometimes, when the phone is already charging with fast charge, suddenly the phone stops charging for a couple of seconds and starts again (I notice it because of the popup sound that comes if you plug the phone to USB)
I even tried to clean USB port, swapped the original USB cable with Anker cable but still using the original LG charger.
Of course there is no water in the port, otherwise a moist detector message would appear.
Has anyone experienced this problem? Can I solve buying a new charger? I'm afraid USB port might be broken

alfred888 said:
Hi, I've got this problem: sometimes when I plug my G6 to the charger, a popup message comes out saying:
Charging slowly
Try the following if charging is slow:
- make sure to completely remove any water or debris from the USB ports.
- reconnect both ends of the cable.
- use the charger and cable that came with the phone.
Sometimes, instead, the phone starts charging normally with fast charging. If that popup comes out and I try to unplug and plug USB cable a couple of times, the phone starts charging again with fast charge.
Sometimes, when the phone is already charging with fast charge, suddenly the phone stops charging for a couple of seconds and starts again (I notice it because of the popup sound that comes if you plug the phone to USB)
I even tried to clean USB port, swapped the original USB cable with Anker cable but still using the original LG charger.
Of course there is no water in the port, otherwise a moist detector message would appear.
Has anyone experienced this problem? Can I solve buying a new charger? I'm afraid USB port might be broken
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Click to collapse
When was the last time you factory reset your device

lg3FTW said:
When was the last time you factory reset your device
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Click to collapse
I did it recently after I upgraded to Oreo but this was happening even before I did reset the phone.

KingFatty said:
Try a fully compliant aftermarket quick charge 3.0 charger, it should charge much faster. Unlike a QC 3.0 charger, the charger bundled with the phone does not include 12V charging mode, so it's not allowing the phone to charge as fast as the phone can handle (the phone is fully quick charge 3.0 compliant and can charge faster than the bundled charger is capable of doing).
Click to expand...
Click to collapse
Yeah i found that funny that LG lied and tried to get by on using the chargers from the failed lg G5 shipped with the G6. They only support 2.0 charging so just use the cord and use another 3.0 block or get a portable 3.0 power pack. They are 20 bucks on amazon. Good ones too.

https://www.amazon.com/Charge-Anker...1528444548&sr=8-3&keywords=anker+powerport++1
can this be a good charger?

I bought an used G6 without charger but I have a Pixel charger model GL0102 and when I plug the phone I cant see the fast charging notification on the screen. It only say charging.