Mobile Device Having An Interior Multiband Antenna And a Partially Metal Back

A device comprising:

• a back side comprising:
• a conducting central portion;
• a first non-conducting portion comprising a first width from first end edge of the back cover to the conducting central portion;
• and a second non-conducting portion opposite the first non-conducting portion, comprising a second width from a second end edge of the back cover to the conducting central portion, the conducting central portion separating the first non-conducting portion and the second non-conducting portion;
• an interior chassis covered by the back side;
• a first antenna located on the interior chassis behind the first non-conducting portion;
• a second antenna located on the interior chassis behind the second non-conducting portion, each of the first antenna and the second antenna comprising at least two respective radiating arms configured to resonate in at least three frequency ranges;
• one or more antenna feeds connected to each of the first antenna and the second antenna;
• and,
• a switch configured to select one or more of the first antenna and the second antenna for operation.