What do mobile phones substitute when you are on the move?

Верно ли следующее утверждение:

The cell phones substitute your PC when you are on the move.

What are more and more people in developing countries using their mobile phones for?

Touch-screen interfaces on mobile phones are rare now.

More and more people in developing countries are using their mobile phones to connect to the Internet.

Верно ли следующее утверждение:

Music phones are generally more expensive than regular phones.

Верно ли следующее утверждение:

Camera phones are generally bulkier than regular phones.

Верно ли следующее утверждение:

Basic phones are priced much lower than other phones.

IP Phones do not look just like normal phones.

What do Wi-Fi phones allow you to do?

What connector do IP Phones have?