I have a Eco Sound bluetooth model :ECO-V268. How do I set it to my Verizon wireless razzle phone?

I can tell you that signal strength is not the issue here, read on.
The intelligent Eco Mode reduces power automatically when the handset is close to the base unit to allow extended talk time. Battery life when using the Talk button is about 10 - 13 hours when in Eco Mode. ... This is a feature of the phone that turns on automatically there is no procedure to disable it on the handset

you have to go to settings., and from there, profiles section to change the mode silent to general model.

TRY YOU VOLUME CONTROLL UP OR DOWN

This is a few years late but maybe will help someone else searching for the manual. See attached picture. Hopefully you can read it.

eco mode battery gone flat charge battery then try starting

The default pin is in the box of your Bluetooth device or you could go to the website and check. Try 0000 or 12345

You cannot turn off the ECO mode manually.

Intelligent ECO mode (select models)
Power consumption is automatically reduced when the handset is close to the base unit for extended talk time. Battery life on Talk is up to 13 hours when in ECO mode.
https://panasonic.ca/english/telecom/telephones/features.asp#eco

Verizon Wireless uses CDMA technology, which does not use SIM cards; account information is stored directly on the phone, and can not be changed or switched out as simply as a SIM card.

did you drop anything on it, like an egg. i did one time and it blocked the microphone of my samsung sch a850.
i had to get a new phone. if you didn't drop anything on it call verizon with another phone and say my calling isn't working. one time after my phone got reactivated and it could not send picture messages so i called verizon and they fixed it right up?

If you need to know more about the Eco Drive, look for detail tech manuals for all types here: http://www.citizenwatch.com/downloads/tech/tech.htm