Develop Bugs

3rd Party USB Sync/Charge cable problem

I purchased this cable off eBay for a spare. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300510528360
When I use this cable the charge function works fine but when I plug it into my PC Windows gives me an error loading the MTP driver and there is an <!> mark on the MTP device in device manager.
When I swap in the stock cable in the same USB port it comes right up without error.
Obviously the difference is the cable but my question is:
Is the cable DEFECTIVE or just incompatible? It is cheap enough where I'll just order another one. I read numerous times where the GTAB 7" cables should be fine ..... or was that for charging only?

[Q] USB Hosting

Hi All,
I have rooted my SGH-T989 and have flashed Zedomax's kernel to allow the USB Hosting functionality on my phone. This has worked great and I can now use a mouse and keyboard via a USB Splitter into a single OTG cable plugged into my phone.
The Setup:
Samsung Galaxy S2 SGH-T989 (Rooted)
Zedomax-T989-Kernel-v0.1.zip from
w w w .theandroidsoul.com/connect-usb-flash-drives-mouse-keyboard-etc-to-t-mobile-galaxy-s2-t-989/"
OTG cable
w w w .amazon.com/Micro-USB-Host-Cable-accommodating/dp/B005GGBYJ4
Belkin USB Hub [/URL] from
w w w .bestbuy.com/site/Belkin+-+4-Port+USB+2.0+Powered+Hub/2389094.p;jsessionid=F16C84B9FD065C59401C5EEEEA981347.bbolsp-app02-07?id=1218324435232&skuId=2389094
DLink KVM[/URL] from
w w w .officedepot.com/a/products/706845/D-Link-KVM-221-2-Port/?cm_mmc=Mercent-_-Google-_-Networking_and_Cables-_-706845-%7Bcopy:IQ_PE%7D&mr:trackingCode=480D3D1B-EC81-DE11-B7F3-0019B9C043EB&mr:referralID=NA
Normal USB mouse and keyboard
KVM Used to switch mouse and keyboard from Desktop to USB Hub for SGH-T989
The Problem:
If I use the mini to USB cable supplied with the Belkin USB Hub to the OTG cable the mouse and keyboard are recognized and usable. However, if I don't use the OTG cable it will NOT recognize the mouse and keyboard.
That is not my issue, I'm ok using the OTG cable, but it leaves me with a Female USB placeholder. Therefore, I have to connect it to the USB Hub. Obviously, the Mini to USB A cable worked for hosting, but it does not supply power to the phone even though the USB Hub is plugged in and powered.
My initial thoughts were that the USB Hub does not supply power out the side mini USB so I bought a 1.0 USB A to A , 2.0 USB A to A, 3.0 USB A to A, Gender Changer for OTG cable. and no matter what cable I plug into the front USB slots on my USB Splitter, I get NO POWER and NO HOSTING. Nothing seems to flow through to the phone other then the one Mini to USB with OTG, but leaves me powerless.
I have also bought the docking station, which I later found out that even with the OTG cable will not push the hosting through to the phone and had to return it in favor of a more generic stand to hold my phone landscape.
I am out of ideas as to what to try next to get power and hostability to my phone. Please help!
Thanks,
Sam

Odds the USB hub powered? I remember that the first OTG kernel that came out said the hub had to be powered to use a mouse or keyboard.
The hdmi cable has to be plugged to the phone charger as wellfor it to work
Sent from my SGH-T959 using xda premium

Yes it is powered, I have also tried unplugging it to remove power. However, the OTG cable will accept the KVM mouse and keyboard plugged directly into the OTG cable itself.
The one thing I'm not certain on is whether or not the mini to USB out of the side of the USB Hub is supplying power or not. However, that is the ONLY spot that is working for pushing the KVM Mouse and Keyboard through to the phone. Without just plugging KVM directly into the OTG cable.
The KVM is plugged into the USB Hub and the Mini is plugged into the side by the power and then plugged into the OTG. This setup works for hosting, but all the variations of plugging into the normal front facing USB spots of the hub have failed to do anything but bring in power. However, I have NEVER successfully brought power through the OTG cable, so I'm not even sure it can support power at this point.
Sam

the only devices that does not need additional power are USB keys / flash disk storage and the likes
everything else you need to plug it into a powered USB hub, and have the hub connect to the USB OTG cable
and you do not need any special Kernel for USB OTG to work on this phone
USB OTG works from factory stock ROM (i just tried it to verify )

Hi Allgamer,
Thank you for your insight. However, I did try the OTG cable before getting the special kernel and it DID NOT function. Once I downloaded Kedomax's kernel I was successful. This appears to be a feature they removed from T-Mobiles version.
As for the Power issue. If you guys would be so kind as to reread my initial blog and reply before posting power things to try as I have listed that I have tried powered and unpowered and plugged directly and indirectly and through a usb hub and without, all variations and cables to plug and play have been exhausted.
I'm looking for a more advance analysis that may help provide a solution to my current problem. I'm not sure if the OTG cable can allow power to pass through to the phone or not. I have yet to see that work. I'm also thinking I cannot host without the OTG which seems as though it would leave me in an infinite loop.
Here are more along the line of questions that I'm hoping someone can provide insight to as I have no way of answering these questions myself without an extended work bench and wider test result devices.
1.
Can anyone confirm that the OTG cable can in fact provide power to the phone as well when plugged into a USB Source such as a HUB that is providing power out the USB ports to the OTG cable itself.
2.
Can anyone confirm that the OTG Cable can still support hosting capabilities if power is being sent up the cable or does this disable it in some way.
Thanks again for your responses, no disrespect intended by my redirection of the thought process here.
Sam

[Q] Help! USB port no longer connecting

I can no not charge or connect my phone to pc via the usb port. At first, the micro usb was lose and would wiggle when plugged into my phone. I have tried about five different cords, some are loose some are tight. But I can not get a charge to initiate weather its usb to pc or usb to wall outlet. Is my phones micro usb port ruined? Epic 4g on cm 10.1

dertdeezy said:
I can no not charge or connect my phone to pc via the usb port. At first, the micro usb was lose and would wiggle when plugged into my phone. I have tried about five different cords, some are loose some are tight. But I can not get a charge to initiate weather its usb to pc or usb to wall outlet. Is my phones micro usb port ruined? Epic 4g on cm 10.1
Click to expand...
Click to collapse
look inside the port, some connectors might be bent. If you can get it to connect to a computer once though, put back stock and take it to sprint, or you could always buy an extra battery and external wall charger and just switch batteries when needed

A Cable to Charge Other Phones Using My Phone?

I've seen that Huawei Ascend Mate 2 can charge other phones thorugh a compatible cable. Can I find such a cable for my Samsung smartphone?
Thanks.

CooLasFcuK said:
I've seen that Huawei Ascend Mate 2 can charge other phones thorugh a compatible cable. Can I find such a cable for my Samsung smartphone?
Thanks.
Click to expand...
Click to collapse
You should be able to use any USB cable that has micro USB tips on both ends. Look for a male-to-male micro USB cable.

Not any cable, you need to get USB OTG cable, cost a few dollars on ebay or Amazon. It has micro-usb connector on one side (which goes to your phone) and full size female usb connector on the other side to connect any device (usb stick, mouse, keyboard, ext hard drive). Just make sure your phone supports USB OTG. Typically all the latest Galaxy phones should. That cable, usb on-the-go (OTG) has two pins shorted inside and turns your phone into a host so you can connect other peripheral devices, such as the one I listed above. And while it does that, it provides 5V power through USB bus like any usb host (your laptop or PC). As a result, you can charge other phones or devices from your smartphone. Just keep in mind, it will drain your battery
This is very useful, for example, if you have Note 2 with 9600 mAh Zerolemon extended battery (in my case), and use your phone to charge other devices with extra juice

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?
Click to expand...
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.