Default gmail symbian application interface have a on-screen keyboard. It is about 50 % of the phone screen. It is possible to remove the on-screen buttons. there is no limitation because the Gmail application is fully touch compatible. Go through following steps to enable full screen mode
Go to menu
Change “On-Screen Keyboard” settings to “off”
Now your gmail application will start in full screen mode.
That’s great! I was so troubled by the on-screen keyboard just now. Now it’s all gone! Thank you SO MUCH!