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[Q] Quick Usb question

OK so here is my problem: every time I connect a USB via the micro USB port the device doesn't detect the USB. However sometimes if i am lucky I only need to twist the cable and it works shortly. Probably the cable is destroyed, anyone know if I need exactly this cable or if I could also use a normal micro USB adapter cable. Thank you.

Temporeiches said:
OK so here is my problem: every time I connect a USB via the micro USB port the device doesn't detect the USB. However sometimes if i am lucky I only need to twist the cable and it works shortly. Probably the cable is destroyed, anyone know if I need exactly this cable or if I could also use a normal micro USB adapter cable. Thank you.
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Well, I'm a bit confused, as the 70x has actually 2 cables.
1. The USB cable that connects to a PC
2. The USB dongle adapter that has a full size USB connector (female) for connecting flash sticks for example.
Regardless, as in number 1, you can't use just any micro USB cable, like the one that comes with a camera for example. You might, but then again, the data connections may be wrong. Best thing is to try. Typically I use my HTC cable. Regardless, you won't damage anything by trying.
As in number 2, well, it may be hit and miss if you get a generic one. The + and - pin layout should be the same, but the data might be different. The only way is to check.
When you twist your cable, make sure it's not actually twisting the connector (micro). This may give false readings, when in fact it could be a damaged micro USB port on the Tab. So check it good.
MD

ok thanx. found a working cable.

Help figuring out what's broken with my OnePlus One

Hello everyone,
A couple of weeks ago my USB data connection on my OnePlus One has stopped working.
This means that no connection is even detected on any computer.
This is not a driver issue as the computer doesn't even notice anything has plugged in.
I think it's not a software/ROM issue because the same applies to fastboot mode and recovery mode - no data connection, no "usb plugged in" sound on any computer, no device showing up.
It's also not a cable issue, as the same cable works on other OnePlus One's and I've tried many different known-to-be-working cables.
More facts:
1) When plugging to a computer USB port - the battery icon shows the charging (lightning) symbol for a half a second and disappears and it won't charge. The computer, of course, doesn't see a usb device plugged.
2) When connecting to an AC charger - it charges just fine.
3) I already tried replacing the dock connector and flat cable unit with a new one - did not solve the issue, which means the dock connector is fine.
Any insight on this will be greatly appreciated!
Thanks!

purpleman2k said:
Hello everyone,
A couple of weeks ago my USB data connection on my OnePlus One has stopped working.
This means that no connection is even detected on any computer.
This is not a driver issue as the computer doesn't even notice anything has plugged in.
I think it's not a software/ROM issue because the same applies to fastboot mode and recovery mode - no data connection, no "usb plugged in" sound on any computer, no device showing up.
It's also not a cable issue, as the same cable works on other OnePlus One's and I've tried many different known-to-be-working cables.
More facts:
1) When plugging to a computer USB port - the battery icon shows the charging (lightning) symbol for a half a second and disappears and it won't charge. The computer, of course, doesn't see a usb device plugged.
2) When connecting to an AC charger - it charges just fine.
3) I already tried replacing the dock connector and flat cable unit with a new one - did not solve the issue, which means the dock connector is fine.
Any insight on this will be greatly appreciated!
Thanks!
Click to expand...
Click to collapse
By dock connector, you mean the USB port? Typically, this issue arises when the pins in the USB port get damaged. I don't know how the rest works out, but if that particular section of pins have to communicate throughout the rest of the motherboard, perhaps the trail responsible for that may have somehow gotten damaged. This is a clueless theory, someone with more electrical/motherboard experience can verify this.
What I do know is that once the micro USB port has been replaced on the phone, the issue should be fixed. It happened to an S3 I still have and I got it replaced by a friend. Sadly, it happened to me at the wrong time since i had wiped the entire OS and internal storage and was relying on my USB OTG cable and a flash drive which contained a rare rom called Sonic Open Kang Project (SOKP).
DO NOTE that this has also been an issue with me on the software side of certain devices. I uave had practically every flagship device out there and have come across a point where this happens on both stock and custom roms. My Optimus G did it on custom roms, and my Nexus 7 2012 occasionally on stock. There were other devices I cannot remember but sometimes factory resets or replacing the rom helps. However, you did state that the result is still the same on fastboot/recovery, so this seems to be more on the hardware side.

I replaced the USB connector (including it's flex cable) entirely. Did not solve the issue.
What else could be wrong?

try again
purpleman2k said:
I replaced the USB connector (including it's flex cable) entirely. Did not solve the issue.
What else could be wrong?
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Click to collapse
Try another computer. See if you can get any response from adb.

pbergonzi said:
Try another computer. See if you can get any response from adb.
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I tried a lot of different computers and cables. None of them detect a USB connection.
Again, to clarify - they don't even SEE a usb device has been plugged in.

recovery?
purpleman2k said:
I tried a lot of different computers and cables. None of them detect a USB connection.
Again, to clarify - they don't even SEE a usb device has been plugged in.
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Click to collapse
You running a custom recovery? If so, see if you can toggle the mtp on/off reboot with each back to recovery. Use the tools to check the filesystem, permissions, etc.
Could pins have damaged?

Well, I did replace the USB connector with a new one, so if pins are damaged it's gotta be on the motherboard side, and I can think of no reason why that would ever happen.
As for recovery, I'm running TWRP and I'm not sure I understand what you meant I should try. Can you elaborate?
Thanks

USB Device not recognized / No fast charge

So I've had my S7 for around two months now, and all of a sudden fast charging just stopped working. Thought, oh, must be using the wrong cable (have loads of them micro USB cables floating around)
Now I'm certain I'm using the official Samsung fast charge plug and cable that came with the phone, and still no fast charge. When I try to plug into my Windows 10 Desktop or Laptop I have a message that says the device can't be recognized
Phone has already been rooted and flashed with a custom rom. Didn't think that was the issue as it wouldn't even show the mounted storage in TWRP, or identify the phone in ODIN.
Now I've flashed back to the stock rom that I made a backup of when I had the phone, and I still have the same problem!! Can't access internal / external storage using the supplied USB cable and can't fast charge.
I'm thinking the USB port on the device is just knackard.. but really, I've looked after it so well I fail to see how this could happen, unless it's a common fault.
Might just get a wireless fast charger, but do you guys have anything else I can try before giving up on the USB connectivity?
Cheers

try to connect to a different pc, if same it means your usb connector is faulty

Sounds more like the cable is bad tbh, you won't get fast charge from a PC USB port, only from the Samsung charger
But if the device isn't recognised by the PC, and won't fast charge from the charger, the common thing between them is the cable
Possible it's the phone USB port, but more likely the cable is bad
Afaik certain cables can not fast charge either, so chances are the ones you have lying around that are not the official cable can not support it
Genuine Samsung USB cable is white with the USB port symbol on both ends and the phone end has two small ridges to grip when inserting and removing it, should help identify it

Yep I'm using the official cable and fast charger
I'm trying to fast charge via the fast charger and not USB. Only trying USB to access the internal / external storage.
Tried on my desktop and laptop and both have the same issue where my old HTC m8 connects without any issue.

clownstyle said:
where my old HTC m8 connects without any issue.
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With the same cable?

*Detection* said:
With the same cable?
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To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.

clownstyle said:
To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.
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I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration

*Detection* said:
I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration
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Click to collapse
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup

clownstyle said:
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup
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Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)

*Detection* said:
Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)
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Click to collapse
Unfortunately not. Well it's been rooted and flashed so I guess not.
Ordered a wireless fast charger so hopefully that will see me through and WiFi network for file transfers.
I reckon the USB port will need replacing but I'm not really inclined to do that myself.

Just noticed you said you flashed back to stock using a backup you made
Have you tried stock using ODIN and 100% stock files, using CSC to reset?

My dad has a5 2016 with the same issue, and no warranty. I bought flex + connector , replaced it and still nothing. No fast charge ( it takes cca 4hrs to charge it fully ) and no usb connectivity. I gave up on that

@ClowsTyle
Any luck? I seen your recent post in another thread and it sounds like you tried to replace the USB but that didn't work.
I'm having the exact same issue now. Device suddenly stopped fast charging, Windows does not recognize it when plugged into PC. I ordered a new cable to double check and also tried on different computers. I also tried reinstalling drivers, but nothing has worked.

Hi my is doing the same thing no Fast charge and no pc connection, did anybody find out what happen with yours ?

You have to change power ic s535 for s7 edge.
When usb gets moisture power ic will damage.

I have same problem my phone charging 0-100 6hours but ı install notorious kernel and it takes 3 hours it is better than 6 hours

Same Issue
I've had the same issue for the past 3 weeks now and I've tried everything I know...
1. Tested cable and charger with another S7 and they work fine.
2. Factory Reset.
3. Changed the USB port chip.
4. Turned on "Low Battery Dump".
So far, the issue hasn't changed.

was this issue solved?
I´m having same issues whit my galaxy s7 active, I can not fast charge my phone no matter what cable I use, then noticed that evrytime I plug it to any computer it says the devicescan not be recognized, I´m about to buy a new charging port and install it, but I want to make shure this is not a software related issue.
I´ve tried several cables and several laptops/ pc´s
I´ve factory reseted my device and turned on low battery dump, wiped cache partition, and problem still there...

The charger could be faulty/damaged did you try a different charger?
---------- Post added at 06:43 PM ---------- Previous post was at 06:40 PM ----------
Dial *#08# and select the first option (mtp and another option i am on a custom rom that seems to not have the *#0808# setting

I also have the same issue with my phone the phone charges but not recognize and also tried to change settings on phone and nothing? And my other samsung phone works and nothing wrong with USB tried to install smansung drivers on PC and still same issue.
I tried a different USB and nothing works and different ports on my comp.
My ports works with my other samsung phone so not sure why not with the S7?
Is the USB faulty?

otg access to usb and charge tablet at same time

hI everyone in regard to otg using Usb and charging tablet at same time, I have a fusion5 tablet and a usb hub the kind with 3 usb hubs and a power in with a micro usb male plug. and a switch for otg or charge. Ive tried using a potentiometer to find the magic resistor value between pin 4 (the id ) and pin 5 ground of the micro plug.
(thought i had it at one point but not sure) as could play a avi file while charging) However now most of the timee either accesses the usb or charges, I can get it to do both , but stops charging after 8 seconds.
Anybody happen to know if a specific resistance value works for both charging and otg.
I have seen another schematic but havent tried it.

It doesn't sound like the micro usb otg cable to me. I built one without a resistor and mine works just fine. Have a look at your usb settings. Some devices require you select your choice: usb otg or charging.

nastiero said:
It doesn't sound like the micro usb otg cable to me. I built one without a resistor and mine works just fine. Have a look at your usb settings. Some devices require you select your choice: usb otg or charging.
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Thanks How do I look at my usb settings?. I think I may not have the proper resistor setting as will currently provide power to usb and charge at same time for a few seconds then stops charging.. I turn resistance up it will charge , turn it down and will allow access to usb.. i think have to find that magic number inbetween.

jmxda21 said:
Thanks How do I look at my usb settings?. I think I may not have the proper resistor setting as will currently provide power to usb and charge at same time for a few seconds then stops charging.. I turn resistance up it will charge , turn it down and will allow access to usb.. i think have to find that magic number inbetween.
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Click to collapse
Depending on which phone and version of Android you have, the most recent versions of Android have the USB settings under Developers Options.
The USB OTG charging works differently from phone to phone. Sometimes you must plug your charger cable and the USB device you want to connect to into the OTG cable prior to plugging the OTG cable into your phone. This way the phone detects charging and device.

nastiero said:
Depending on which phone and version of Android you have, the most recent versions of Android have the USB settings under Developers Options.
The USB OTG charging works differently from phone to phone. Sometimes you must plug your charger cable and the USB device you want to connect to into the OTG cable prior to plugging the OTG cable into your phone. This way the phone detects charging and device.
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Click to collapse
Yes that is what I have been doing . In developer options under Usb default , no charge option there, only file transfer, USB tEThering, MID, PTP ,and o data transfer
I thanks. However i believe the default USB option is charge as thats what it is when i plug in USB to a powered cable.
. As I said jt works for A short time using USB and charging at same time with resistor between 45K and 68k
then either stops charging and continues usb or keeps charging but gives usb errrors or cant access usb but continues charging.
Fusion5 tablet android 9

Update this works fine with unmodified USB hub or charge power and USB on my LG k32 phone but not on the fusion ta blet.

Problem USB e OTg

Hello, need your help. Has it ever happened to someone lack of connection through usb and otg to the laptop. I have the system updated with Android 12 (KB2003_11_c.20) I recently felt that I had to carry the cable more inside the phone. Now it seems to me that it is normal and loads normally. Is it a system problem?? Is it possible it's the cable? I ask for your help.
thanks

It's probably connector got loose or cable.