To modify the way you answer a call, follow these steps:
1) Go to the menu
2) Navigate through the menu until you find the Settings option. Press OK.
3) Select User Profiles
4) Press Options
5) Select Settings
6) Go to Response Mode
7) Choose the response mode you prefer: by opening the flip or pressing a key.
8) Press Done
9) Confirm the Save message.
Keep in mind that this setting will only apply to the selected audio profile. Modify all audio profiles if you want the phone to always behave the same way.