Display brightness
Set a brightness level that works for you. Touch Menu 
> Settings > Display > Brightness. Make sure that Automatic brightness is unchecked so you can set your own level.
Touchscreen & keys
All these touch features are great, and sometimes it’s nice to hear or feel your touches too. Touch Menu 
>Settings > Sound:
•Touchscreen: To hear screen touches (click), select
Audible selection.
•Keys: To feel key touches (vibrate), select Haptic feedback.
•Screen lock: To hear when you lock/unlock the screen (click), select Screen lock sounds.
Messages
From a simple text message to IM, email, and more. Create, send, and receive them all, in one place.
Find it: 
> 
Messaging > Universal inbox
And to make text entry even easier, you can use features like 
> Settings
>Language & keyboard >
course if you don’t want to type at all, then use your 
on the touchscreen keypad.
Hearing aids
To help get a clear sound when using a hearing aid or cochlear implant, your phone may have been rated for use with hearing aids. If your phone’s box has “Rated for Hearing Aids” printed on it, then please read the following guidance.
Note: Ratings are not a guarantee of compatibility, see ”Hearing Aid Compatibility with Mobile Phones” in your legal and safety information. You may also want to consult your hearing health professional, who should be able to help you get the best results.
•Settings: Touch Menu 
> Settings > Call settings > HAC mode settings. Select Microphone to optimize your phone for microphone coupling, or select Telecoil to optimize your phone for telecoil coupling.
•Call volume: During a call, press the side volume keys to set a call volume that works for you.
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