Develop Bugs

[Q] USB Charger

Hi,
I've used a USB charger on all my phones for a few years now. Just plug phone in on my desk and no worries. However my new Defy doesn't seem to take a charge from the USB on my network device (it's not a full PC). However my HTC HD2 could get a charge from it so:
1. Is the Defy more power hungry that it won't charge from an ND (I assume NDs put out less power over USB than a PC)
2. Does it just not show on the battery on the Defy that it's charging?
3. Have I missed something simple? I've gone into USB connection and selected charge only. I can't install drivers on the ND though, could that be it? The ND hasn't said it's found new hardware either though.
Thanks in advance for advice

motorola has a notorious reputation on this, they require a usb driver to be installed for charging some of their phones...
i think there's some strange combinations at work about this but, just use a standalone charger and it should solve the problem.

Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out

Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.

martint235 said:
Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out
Click to expand...
Click to collapse
Would you consider hacking a usb cable to make a charging lead? A standard usb lead plugged into a PC will try to enumerate with the PC before it starts to draw power from the PC. However if you hacked a usb cable and shorted the DM and DP lines on the phone side, the phone 'should' detect the cable as a mains charger rather than a PC, thus enabling charge without any drivers on the PC. It would be something like the attachment...

Thanks for all the replies. Although my USB cable wasn't cheap and was capable of charging an HD2 which must be more power hungry than a Defy, it turns out the Defy is really fussy. It's charging fine through the Motorola USB lead on my network device.

My USB loading experience
Hi,
just to share my exp:
- loading with most USB loaders: fine
- My Car loaders and my multi power adaptor with usb can load everything but the defy
- on Computer no problem (some say you will have better battery performance when loading on non Computer: I can´t see a difference)
- cable doesn´t change anything

technome said:
Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.
Click to expand...
Click to collapse
I've bought a couple of USB cables from ebay. My Defy seems to connect and disconnect when using them, like it has a loose connection. If I use the Motorola one, of course it's fine!

can't connect to usb

i can't connect my sgs2 to USB storage. when i plug in the usb cable to my computer and phone it will charge but nothing else happen. i had stock rom before but are currently using jug 4.0. i thought it was the rom so i downgraded to 3.69. still the same problem. i mean i can do anything with the phone just can't let my computer detect the phone. i tried to reinstall the driver, nothing works. please help!

Is your cable a samsung branded one? I had that same problem but with stock rom. I used an LG branded cable and the phone would connect to the computer and charge, but would not go into USB mode.

yeah, i am using the one that came with the phone, i guess i will try to use a different one. it was working fine before, don't know why it just stopped!

This has happened a few time for me. Sometimes the phone has only needed a reboot, the wire definitely plays a big role... I bought some cheap cables that didn't work at all... some of the older roms wouldn't show USB connected unless drivers were installed (kies). An issue I've more recently unveiled is after using an MHL adapter sometimes the USB will connect for 30-60 seconds before unmounting storage again. Hope that helps
My SGSII HercuDom needs more w00t. It always needs more w00t!

I had the same problem on a stock phone (purchased in late Oct from T-Mobile store in Arizona). I would connect it to the computer and it would charge but would not recognize the USB function (for data transfer or modem use).
Took it back to T-Mobile and they overnighted me a new one for no charge. New one works fine.
papayaforever said:
i can't connect my sgs2 to USB storage. when i plug in the usb cable to my computer and phone it will charge but nothing else happen. i had stock rom before but are currently using jug 4.0. i thought it was the rom so i downgraded to 3.69. still the same problem. i mean i can do anything with the phone just can't let my computer detect the phone. i tried to reinstall the driver, nothing works. please help!
Click to expand...
Click to collapse

Same thing happen to me 2 weeks before. Send back to Samsung in Plano TX and was told it had corrosion in usb port. Them asswipe told me its would not be fix duo to water damage. Dont know how water/moisture got in the port but thats there explanation. All it does is charge from pc, tried using 3 different cables 3 different pc and same thing. Some say a tooth brush might help but tried it and still same.

read this http://forum.xda-developers.com/showthread.php?t=1427301

Cant charge or connect to USB
Hello, i just bought a samsung sgh i777 and when i try to connect it to charge it, wheter is on the wall or computer, a battery starts to flash, if i disconnect it, the phone starts as if you are turning it on. So far i've tried: Change the battery, change the charger several times, put factory settings and still the same problem, can anyone help me?
Thanks,
FS

Connecting P2XL to USB-C to USB-C via motherboard

I can't figure this out... I have an ASRock Motherboard Motherboards Z370 EXTREME4 motherboard with a USB-C output on it and using Win10. I've tried using the P2XL USB-C to USB-C cord to connect my phone to the computer to transfer files. I get nothing that shows up on the phone, yet everything is updated and working on the computer.
Any ideas?
Also as a side note, I have a dozen or so regular USB-C cords. Only 1 actually works just connecting it to a USB port on the computer. Some don't recognize anything, some will recognize the phone and let me transfer files only to have it drop the connection and reconnect to the phone. The 1 cord that actually does work, works as expected. Also this same issue happened on my old PC as well. Only 1 cord works with this phone and everything is updated. I've tried other computers with same issue.
I've also noticed I can only charge my phone with a couple of 120v USB outlets. Lots of them won't charge my phone, even though the phone says it's charging.....just never gains any charge.

I have a pretty similar issue with a C to C connection using my Razer Blade. I have this happen with the OEM cable and a couple of non-OEM C to C cable. I can't remember ever having an issue with my HTC 10 using a C to C, or when I use a USB A to C cable with this phone. While I'm not entirely convinced it's not my USB C port on my laptop, more evidence points to it being my Pixel rather than the port.
It's not the biggest issue for me because it's not a constant hindrance and I can usually get any transfer to finish.

Think I've been down this road... No fix. No idea what is happening or why.

The only option I have is to use my 1 cord to transfer. I usually am transferring several gigs at a time. I never had this issue with same cords for my original pixel XL.
What gets me is I even has issues using us chargers even. They say it's charging but never gain any charge.
Kind of thinking my phone has been defective

Wiped it yesterday and tried again with the OEM USB-C to USB-C cable, no luck even recognizing the phone, even to charge. I did however use a USB-A to USB-C 3.0 cable that didn't ever work originally and it copy 15gb of music without an issue.
I'll keep testing, as well as test it on the chargers that didn't work previously. I will also contact ASRock as I believe possibly my motherboard's port for the C-to-C not to work with the phone. It's not the worst thing not being able to use it, as I'm happy I can finally transfer files at 3.0 speeds now! SO MUCH quicker copying files back onto the phone than when I pulled them off!

Is it possible to charge my Note 4 whilst also accessing USB via an OTG cable?

I have a USB OTG cable that I can use to connect USB devices like flash drives, keyboard etc. and that works fine, but for some reason my phone won't charge whilst the OTG cable is plugged in.
Am I missing some really obvious way of getting this to work? Is it software based? I'm rooted and running Lineage OS if that makes any difference. I've tried several different OTG cables, I've tried connecting to different power supplies, different USB cables, different outlets, I've tried going into developer debug settings - nothing seems to get it to charge and data at the same time.

I am also interested in the topic. Trying to run Octoprint for Android and charge at the same time. I bought an OTG Y cable and the problem is that the phone is either charging or communicating with the 3d printer. Never both at the same time. I've researched quite a bit on google and it turns out at least on some devices the required effect can be achieved but I haven't been able to find anything about huawei devices. It is most probably a software limitation.

The same problem but i have Samsung J5 2017, i have rooted device so there is option to modify system files

Gosh! Would love to get this working. Any news?

Question {SOLVED] Cannot connect ZFold 3 to PC via USB (only charges/no transfer options)

When I plug phone via USB into PC running Windows 11 the phone will only charge.I don't get any options on the phone for file transfer and the PC doesn't detect it. Any tips. It's usually pretty straightforward.

maybe a driver problem?

It came down to the cables I was using.
The Huawei cable I use for the 65W charger didn't work. The Huawei cable for the 15W Wireless Charger didn't work. Found another cable in my cupboard (don't know what or where it comes from) but it now works and I get the options for transfer on the Fold and it shows up in PC's file manager.

小林 卍 said:
maybe a driver problem?
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Click to collapse
Thanks for replying. It was a cable problem.Doesn't seem to like Huawei cables.Very strange.

So the Huawei cable ends are Purple and Orange in colour. Both cables don't work for transfer but only charge when plugging into your PC. The cable end which is White works fine.
Just in case someone else runs into this problem since the phone doesn't come with a charger and cable and you might use your Huawei cables and find you can't connect to your PC to transfer files but only charge.

That isn't new. Samsung had before issue where if you used non Samsung cable the Samsung phone will nag about port was wet, when it wasn't. But now it seems Samsung finally got rid of that limit so charging with any USB C works now. But it seems you need to use original cable for phone when it comes to transfer of files.