Cell phones
I think you are mistaken, a chemist (that is a chemists shop or pharmacy) will use its landlines (telephone) during the day to speak to customers.
All of them
Full
You will never see a full moon during daytime. This is because the full moon is directly opposite the sun in the sky, making it visible only at night when the sun has set.
Any time during the night. Never during the daytime.
full moon
You will never see a new moon during daytime sunrise or sunset. During the new moon phase, the moon is positioned between the Earth and the Sun, making it nearly invisible from our perspective. Consequently, it does not reflect sunlight and is not visible in the sky during those times.
Well I know you can't see the stars, with the naked eye at least.
You will never see a new moon during the daytime after sunrise and before sunset. This is because the new moon is positioned between the Earth and the Sun, making it nearly invisible from our perspective on Earth. As a result, it is only visible at night when it is in the opposite part of the sky from the Sun.
No. Everywhere on the globe will experience night time (or day time) at least once during the year.
The dark circle (new moon)
The Full Moon is opposite the Sun in the sky and therefore it rises as the Sun sets and sets as the Sun rises. (Actually, near the Earth's poles in summer, you can see the Full Moon during daylight.) You can never see the New Moon either because it is in line with the Sun and hidden by glare. (You can see the New Moon in the daytime, but only when there is a solar eclipse.)