The mandible is a U-shaped bone. It is the only mobile bone of the facial skeleton, and, since it houses the lower teeth, its motion is essential for mastication. It is formed by intramembranous ossification. The mandible is composed of 2 hemimandibles joined at the midline by a vertical symphysis.
1 For example, AT&T charges $23 for a home residential line that includes a few additional basic features such as caller ID, call waiting and voicemail. 2  Home phone service plans that include local and long-distance calling cost $30-$45 per month.
First, the unlimited plans will cost households $10 to $100 more a month than the company's Mobile Share Plans, which are still available. This depends on how much sharable data you consume. Also, AT&T will charge a $25 activation fee for the unlimited plan for new and existing customers.