Robuta

https://www.verizon.com/support/knowledge-base-231003/
Here's how to factory / hard reset your DuraXV Extreme if the screen freezes or call, app, audio or sync issues occur and the device won't start up.
kyocera duraxv extremefactorydataresetpowered
https://www.verizon.com/support/knowledge-base-231037/
When turned on, Wi-Fi Calling may improve indoor call quality for your DuraXV Extreme.
kyocera duraxv extremewi fiturncallingverizon
https://www.verizon.com/support/knowledge-base-303405/
Here's how to change the way your DuraXV Extreme+ answers calls.
kyocera duraxv extremeansweroptionsverizon
https://www.verizon.com/support/knowledge-base-303402/
Here's how to adjust the backlight of the keypad / display on your DuraXV Extreme+.
kyocera duraxv extremeadjustbacklightverizon