to my knowledge to check on awake time you need to get a seperate app, i use spare parts, to check like cell standby to see your time without signal you need to just use the battery use one
One thing not included on that page (yet - I'll probably update it in a couple of seconds) is where "Time without signal" is hidden ...
Under:
- Home - Menu - Settings - About phone - Battery use
- Click on the "Cell standby" entry - if there's a "Time without signal", there will be a percentage there.