Use my connected product

• How can I know if Thermostat App is compatible with my smartphone?
• Why change password within 6 months?
• What is size a standard use of Smarther connection to the cloude for a day?
• Which functions still work without wifi connection?
• Can I use my Smarther without creating an account?
• How Smarther works in OFF mode? Is it completely powered OFF without any temperature controll?
• Can Smarther work properly when connected to wifi but without internet connection?
• Can I modify a level of backlight on Smarther display?
• Is it possible turn OFF Smarther by its local pushbuttons?
• How does "location services" works?
• How Smarther works after a commissioning phase?
• Can I use App Thermostat on tablets?