Develop Bugs

USB cable problems?

Hi folks,
i purchased a new usb cable today. its retractable, called 'Sync "N" Charge'. it is essentially the same connections as the stock usb connection cable.
the problem is when i try to connect my (Imate Jam) to my PC(winXPpro) it either freezes my pc, or puts up this msg.
USB device not recognised, one of the usb devices has malfunctioned, click here(opens up systems properties).
It does charge the Jam. well atleast the orange charge indicator lights up(i havent checked for actual charge).
The device drivers for my Jam are fine seeing as it still works when i connect with my original cable.
my original cable works fine, even if i switch straight back to it after trying to connect with the new cable.
I think the cable may be wired incorrectly eg postive and neg prolly fine but the data pins are screwie some how, sound like a reasonable guess?
Is there something else that im not thinking of/dont know about that could be causing the problem?.
bleh just typed all that and answered my own question. the data pins in the new plug are a little bit shorter than the power plug. I use a silicone case on my Jam which stops the plug from pushing in all the way by like 0.25mm. took off the case and bingo problem fixed.
I hate when that happens.
Ok well i might as well say that its a nifty little piece of hardware now that i got it working.
Which leads me another question, the reason i got this new cable was to be able to leave it in my bag and pull it out when i wanted to use my Jam like a 1gb usb card(1gb sd card). the times when i wanted to do this would be at university.
is there a way to make a pc recognise the jam like a usb drive instead of a pocketpc upon connection? i wont beable to install activesync on university pc's.
Thanks
Speedn

[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!

[Q] Is the HTC USB cable special or something?

Since I do not have the original one for this phone I tried my Nexus 7's USB cable and its rather loose, I don't think I can flash a ROM with it due to the chance that it comes off during flash(which it does from slight movement when connected as MTP; its not coming off per se, but it does get disconnected).
But why does it? MicroUSB should be identical, or is the DHD USB port broken?

All microUSb cable are the same.
You can try to clean usb port.
You can find plenty help page on internet with: how to clean microUSB.
It doesn't matter for witch phone. All are the same.

What is broken and can it be fixed at home?

Hi all!
My computers USB port was broken and it let all the electric through (don't know how to write these thing in english)
I connect my phone to the USB and don't know that.. then my phone only charge through computers usb and pc doesn't even try to recognize it.
Then i connected my microsd cardreader to same usb and i heard "puff" and smelld burning electric.
Phone does not smell like burned or anything. Working just fine.. it only doesn't work with data transfer.
So.. is it possible to fix by myself? like changing the usb dock https://ae01.alicdn.com/kf/HTB1xvUoMVXXXXaoaXXXq6xXFXXXf/5PCS-For-Xiaomi-Mi-Max-Hexa-Core-6-44-Smartphone-USB-Charging-Port-Dock-Connector-Transfer.jpg
Or is my phone bricked forever and i cant use it through usb cable?
i hope that you all understand my problem, it's hard to write these thing different language

Anyone?

Replacing the usb dock piece will probably fix your problem and isnt very hard to replace and isnt very expensive from aliexpress. I cant post links but if you go to youtube and search "mi max disassembly" it will show you how to take apart the phone and get to the piece. i have taken myn apart before and it isnt very hard at all. Hope this helps

Sorry, it's not clear to me. Is there a problem with the USB port on your phone? Or only a problem with the USB port on your computer?
You may want to try a different USB cable. Sometimes the microUSB adapters can get worn out.

Problem is on the phone. Phone only charge from usb. Settings are ok.
Same usb port broke my Canon also. It has warranty and its fixed now. It was same way broken than my phone.
Computers usb is fixed now.

Computer can't see phone at all (no driver issue)

My phone isn't detected by my Winodws computers at all.
If I plug it into one of the USB ports directly, the phone starts charging, but that's it.
This is obviously not a driver issue as there's no unknown devices in Windows.
I tried different USB cables, USB-C and MicroUSB-to-USB-C adapters to no effect. Also tried this on two computers to no effect.
There's nothing in the phone's USB-C port (dust, dirt etc) and it's usually covered by the magnetic tip of my Volta charging cable (that's one of those "MagSafe-like" cables where the actual plug breaks off from the cable if you pull it)
If I connect the phone to a USB hub, the hub's ports usually light up when a device is connected. The phone does not trigger the port LED to light up.
Same behavior in System, Recovery and Download mode -> Computer doesn't even notice there's a new device, but device is charging (so apparently it notices there's something connected, just no data transfer)
Is my phone broken? Maybe a hardware problem with the USB-C port? Any advice on how to narrow down my problem?
Thanks in advance for any help or ideas you might have.

I had the same problem today but, in my case, it was the cable's connector.
Since you have multiple cables, it's unlikely they are the issue but it would be proof if you were able to check them with a different device. Also, ensure they aren't charge-only cables (I have a few of those; they lack data pins so devices don't slow-charge when they could rapid-charge instead).
You checked in download mode, so that eliminates configuration issues with Android.
That's all I got; it does appear to be the phone's connector or the USB interface.
A hail Mary would be to stick a 2PS6IMG.zip onto an SD card and RUU it in case firmware is the problem.

I'm pretty sure my cables could be used for data transfer as well. I'll try to find a colleague with USB c phone to try that as well. (family has all iPhones and most of my regular meet friends have phones from the stone age)
The firmware thing could be hard to do. Apparently you can't modify the Cid from within the phone anymore (setprop ro.cid doesn't do anything like it did on old HTC phones, despite having S-OFFed the phone) and T-MOB101 (T-mobile - the German parent of all those other clones) firmware is a rare sight.