I'm trying to setup a LG LS665 and I can't put my internet password in or anything that requires text entry. I think i might have deleted the default lg keyboard. Anything i can do to fix it? Is it possible to install an apk from my pc without any interaction from my phone?
If you already have a Google account set up, and the device connected to the Internet, you can simply visit the Google Play Store using a browser on your PC, log in, find a keyboard app, and click the button to install it on your device (it will then be pushed).
As I somehow doubt that the requirements for that are met (or you wouldn't ask about setup), a second variant would be to download the
.apk file of a keyboard app and use e.g.
adb install to get it installed. Problem: for this you need to have usb-debugging enabled on the device. Not sure if you can achieve that.
Last resort would be to "flash" a keyboard app via a special
update.zip in recovery. But that would require a custom recovery, and the
update.zip must be created (there are posts on that here on this site as well). Some custom recoveries also offer ADB access (e.g. twrp has that built-in), so you could try the
adb install approach with them. However, I cannot tell if there is any (or which) custom recovery available for your device.
Very last resort: flash the entire firmware again – the keyboard app should be part of it.