Device not being recognised with connecting to a computer - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

Hello,
I connect my Z3+ often to my desktop computer (Apple Mac) to sync/charge/backup. Recently I noticed that it not being recognised when I plug it in. The only way I can get it to work is to reboot the phone, whilst connected via USB. Then, after its fully booted, it works as expected.
Can anyone help? Do I need to hard reset the device?

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PC not recognizing phone

Hi guys
Got a bit of a problem. I came back from work today and connected my g1 to my pc via usb cable. I have Power Manager installed and usually i get a 'Computer Powered Profile' notification but instead i got 'A/C Powered Profile' I then tried to use the app 'Mount USB' and it keep saying 'Please connect your phone to usb first'.
Ive tried all the USB ports on my PC and i get the same message/notification. I know there's nothing wrong with the usb ports as i am able to sync my iphone without a glitch.
Thanks in advance

[Q] Defective Note?

I bought a new N7000 and everything works fine except I can't get it to connect via usb. Kies won't connect to the phone but everything else works fine with it. I can transfer via wifi with Kies.
The charger that came with it also wouldn't work, so I got my G2X usb cord and wall adapter and it charges that way, otherwise, the computer won't recognize it.
After rooting it Windows 7 finally installed the drivers for it, and the computer showed it was charging (still no usb storage though) and once I unplugged it and plugged it back in again no response.
Tried mounting usb storage through CWM and still nothing. I would think if there was something wrong with the charging port that it wouldn't work at all, but I can charge via a/c adapter. Confused.
A good test for this may be to try the Android SDK to try and get an adb connection. The reason I say this is it bypasses the samsung usb drivers and uses a generic set. If you can get an adb connection and pass a few basic commands then you'll know it's not hardware issue.
There are a few possibilities for this error...
1. MTP service is not starting correctly on the device which would suggest needing a rom reflash or factory reset. Using the Android sdk connection will help determine this
2. MTP not starting correctly at pc, suggesting driver installation/corrupt download of samsung drivers, again android sdk will help determine this
3. Usb port of pc issue. On my rig, connection usually fails off front ports, but rear ones work fine.
4. Cabling, does sound like the cable/charger that was supplied may be faulty.
5. And finally, the hardware usb on device is faulty.
How were you able to root.?
Sent from my GT-N7000 using xda premium
Once in download mode Oding would recognize the device. Other than that, the computer never will.

[Q] Trouble connecting to PC

EDIT: Solved Turns out it was the USB port not my phone. my HTC One XL had the same issue till I changed ports.
So I am trying to connect my Z3C to my PC to enable helium so I can get my backed up app data. My first problem is that my computer doesn't recognize that the device is plugged in. I don't even get the sound from a device being plugged in. The phone charges over usb but i can't access it in anyway. I downloaded sony PC companion app but still nothing. any help is greatly appreciated.
Has anyone had similar issues?

Phone won't mount/connect to pc

I made a thread on here previously about an issue I had with my phone not going past the bootscreen and finally got it resolved. The problem I'm having now though is when I plug it up to my pc with the usb cable, i don't receive a prompt on the computer for connecting the phone so i can transfer files. I've got htc sync manager installed, which I believe is supposed to install the drivers as well for the phone? I've turned on the developer options and enabled usb debugging, still with no luck. I know the cable is good because I can connect my eReader and it syncs up fine with the pc. What else could I do to get it to connect?

Phone not connecting to PC

Hi All,
As per title, my Asus ROG Phone II is not recognized by my PC when I connect it through USB.
It's not even that ADB commands aren't working or such: even just connecting "normally" (e.g. without USB debugging activated), the phone will charge but won't show up in the PC, and vice-versa it won't appear as connected to USB in the phone settings.
I've tried with two different PCs and the problem persists.
Am I missing something?
Thanks,
TG

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