Android device suddenly not found - android

I am working at an android studio project and I always work with my own physical device SAMSUNG S7. It always worked (for a few weeks now) but today suddenly from one moment to the other my device cant be recognized by android studio anymore. I didnt change any settings! I just changed a line in the code (like a hundred times before) and after it my device is not shown in the list of devices. There is only the virtual device which is useless for me because it never displays the app correctly. Just my physical device shows the app correctly so now I need help. Otherwise I cannot continue programming.
I tried to reopen android studio and restart my phone but it didnt help.

Changing the cable plug mode (credits to Hack06)
Just swipe down the OS status bar, and tap on the device, then choose another connection mode.
Installing Samsung's development drivers
When this doesn't work, try installing the drivers provided by Samsung to improve developments. These can be found here.
USB Debugging
USB debugging may have failed. Or all of the developer settings have been reset. Try that
Reboot your phone into ODIN mode
Caution:
ODIN mode is in charge for flashing your Android phone, and if you’re not careful, you can cause permanent damage to your phone.
This solution applies only to Samsung’s devices, since they are the only devices with access to ODIN mode.
A guide how to access ODIN mode for your phone can be found here.
Install KIES software
If nothing worked till here you might want to download KIES software.
KIES software only works for Samsung’s devices.
Samsung KIES is part of Samsung Smart Switch.
Download here.
Google - Android USB Driver
My last suggestion would be to install Google's Android USB drivers. An official guide can be found here.

This may sound obvious..
but sometimes it could be a cable issue
even if it's charging it could not transfer data
try a new cable

Related

Pixel 2 XL will not connect to PC for Android Studio Debugging

I am trying to create a React-Native app and I need to connect my device to troubleshoot some issues that only occur on the physical device and not the simulator. For some reason I have never been able to connect my Pixel 2 XL to my PC. I am running Windows 10 and I have tried all of the following.
Enabling developer mode and USB Debugging on my device.
Uplugging and replugging my device 20+ times in a row.
Changing the USB port I am using.
Changing the USB connectivity settings in Developer Options > Default USB Configuration. (Options are: File Transfer, USB tethering, MIDI, PTP, No data transfer) I've tried them all.
Restarting my device while it's plugged in
Downloading the Google USB Driver (in Android Studio).
Restarting my PC when the device is plugged in.
Updating my PC, and updating my device.
Checking Device Manager and trying to update the driver. (So the device used to show up with the yellow warning triangle next to it and trying to update the driver never worked. But now, the device doesn't even show up in Device Manager anymore)
Factory Reset my phone.
Downloaded Media Feature Pack for N and KN versions of Windows 10 (Suggested by the google tech support)(I called them)
I feel like I've tried everything previously addressed in every Stack Overflow question on this issue.
Finally solved the issue. The data cable was the problem. If you have tried all the steps above, and nothing is working, buy a new cable. This one works great and seems very durable for my Pixel 2 X: https://www.amazon.com/gp/product/B01N4OKUB8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I had this issue too - my Google Pixel 2 XL is about 9 months old. Was developing an app, so using USB debugging to debug the app as I built it. One day it mysteriously stopped working, though no issues with charging. I tried everything, including using all the different USB ports on my laptop, with no luck.
I eventually gave up and started using the emulator on Android Studio, and since I didn't need data transfer for anything else, I didn't send my phone for repair or anything.
A few weeks later it just started working again, all by itself...
I don't think I did anything to fix it - the moral of the story is, if you don't need it urgently, there's a chance it might just decide to work again!

Remote Debugging Chrome on Android issue

I am have issues using the remote debugging feature of the Chrome Developers tools with my Android device (LG Nitro running Android version 4.0.4). It was working perfectly several days ago but now my device never appears on the about:inspect page.
I have followed and carefully considered these instructions including the troubleshooting tips. I have also searched for the answer to my problem but have not been able to find anything that works.
I am using Chrome version 35.0.1916.141 on my Android device and version 35.0.1916.114 on my PC (Windows 7). Neither says any updates are available.
Please note:
I have enabled debugging on my Android device and the small bug icon appears in the menu bar at the top of the screen when the USB cable is connected.
I have installed the necessary drivers for my phone on my PC.
Chrome is open on both devices
"Discover USB devices" is checked
I have tried restarting both the computer and my phone several times
The only thing I have changed on my computer since the last time it was working was to download 64-bit Java. Could this have any effect? If anyone has any input or ideas, it would be much appreciated!
Sounds like you may have gotten lucky. Next time this happens, try this:
1) Unplug your device.
2) Revoke USB debugging in the Developer Tools.
3) In the command line:
adb kill-server
adb start-server
Plug in device and accept fingerprint.
Voila, it appears in Chrome again. I went through a lot of pain with random problems with my Galaxy S5 not showing up, I was pulling my hair out for hours trying to figure it out.
Update: After launching my Android application from Eclipse on my device, it suddenly showed up on the about:inspect page. I am not sure why it was not recognizing my phone before but it seems to be working now.

Eclipse not detecting my Galaxy S3 GT-I9305 in list of devices

I know this question has been asked numerous times, but none of the threads have had an answer to solve my problem. It seems no matter what i try Eclipse just wont detect my phone, I have set it to debug mode in the settings, i've installed "Kies 3" on my laptop and it says i have the latest drivers already installed on my phone when i try to update it.
I've installed the google USB driver package from the sdk manager and have downloaded and installed the samsung driver from the samsung website. Windows recognizes the device and in the device manager under android phone it appears as "SAMSUNG android ADB Inerface".
Im running windows 7 and have even tried deleting all the mounted dive drivers from regedit as i seen suggested in another thread but still no joy! Really starting to get frustrated with this at this stage i've been trying for two days now to figure this out!
This is such a pain! I need to be able to debug on my phone too as i'm using features that the emulator can't handle (i.e. audio recording). I'm all out of ideas here so any help would really be appreciated!
Thanks
The method I followed to install my GT-I9300 drivers was this:
Download samsung drivers from this link:
http://developer.samsung.com/android/tools-sdks/Samsung-Andorid-USB-Driver-for-Windows
Then just connect your phone and make sure you have a stable Internet connection: It will download required drivers automatically.
Also, make sure you have enabled Android developer options in your phone settings. Enable USB debugging in developer options.
I usually get it to work, when I switch the USB mode in my smartphone (e.g. MTP to PTP). This way, windows starts downloading more drivers.
1) Try disconnecting device from PC, revoke USB Debug authorization from settings menu, and then re-authorize the computer you are working on once you connect it again.
2) Check to see if you see the phone in DDMS perspective (left hand side) - if so, try clicking on it and it should work.
3) try removing all drivers (Google, Samsung etc.) + scan "leftover" registery entries using a reg cleaning program. Then install ONLY Kies Light version and try again.
4) It once worked for me - try changing the USB cable (preferably, to an original one)
Let us know if something worked!
1) enable USB debugging in your phone's settings.
2) ensure that you have the proper drivers installed.
3) open adb in command prompt and run "adb connect"

Eclipse wont recognize my HTC desire

I'm trying to use my HTC Desire as a test phone for my Android application, but Eclipse just can't see it, now If i go to device manager there is a yellow !, i click uninstall, re-connect my HTC phone to the computer and it can not install the drivers, can anyone help me fix this problem? I really need to be able to use my HTC phone as a test device.
Canvas
I always had the same trouble with HTC phones and some Samsung phones as well even when using the official driver.
I found if you install PDANet http://pdanet.co/ this installs the driver for you and it always seems to work. You don't actually need the software afterwards and can be uninstalled, but it successfully installs the driver and device is detected.
Installing HTC Sync Manager on Windows 8.1 resolved my problems with HTC Desire 600.You can download it from here:
http://www.htc.com/www/support/software/htc-sync-manager.aspx
Details brought from here:
http://grindheadgames.com/htc-desire-showing-adb-devices-fix/
Important Note: I also noticed there is a checkbox in USB Settings called 'HTC Sync Manager'. You should check it to enable 'USB Debugging'. Otherwise although you have enabled usb debugging in 'application development' section, USB Debugging will not work.

can't get Lenovo a60+ to appear as an available android device in eclipse

Are there any alternative ways to get it to work?
Even the adb command of android sdk doesn't detect my phone. Then some said I need to install the phone drivers first, I thought the phone automatically does it when plugged in while usb debugging is enabled, but it appears that it doesn't.
I searched for the driver, but was unlucky, it was not included in the memstick that came with the phone. Even the lenovo website doesn't provide it.

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