USB Debugging option greyed out

Question

I have an LG-E405 phone running Android 2.3.6.

I connected my phone with a USB cable and selected the mode as Charge Only.

Now when I try to tur

Answer 1

Just ran into this issue on a current LG phone on a windows computer. Everything from developer options was enabled correctly, but wasn't able to see the device through ABD. Needed install drivers which I was able to do from the phone.

After connecting through USB and allowing the connection, I tapped the USB connection type notification and on the screen where you select the type of USB connection (MTP, PTP, etc..) I tapped the three dot icon in the top right hand corner of the screen and selected to install the PC drivers. After installing the drivers on my PC I was able to connect through ABD to debug.