You can talk on the phone as long as you want with a girl .Many times people talk for hours on the phone.
I imagine about close half or over.
Like none. Most teenagers text.
3, 4, 5, 6, 1, 2, 9, 10
If you spend many hours on the phone at a help desk, use a headset instead of a regular phone
5 6 4 8 3 2 1 10
8-9 hours
About 7 to 8 hours.
At least 8 hours of sleep.
25
1 hour
12 hours would be good.