Mobile cellular telephone with a display that is controlled partly by an incline sensor

A mobile cellular telephone comprising:

• a processor configured to control the operation of the mobile cellular telephone and a display of the mobile cellular telephone;
• and
• an incline sensor configured to detect inclination of the mobile telephone in a first plane, wherein the mobile cellular telephone has an inclinometer mode, in which the processor is configured to receive an indication of the detected incline in the first plane from the incline sensor and control the display to display, to a user of the mobile telephone, a bar and an item, at a position within the bar, dependent upon the received indication, wherein the position of the item within the bar provides an indication to the user of the incline of the mobile cellular telephone in the first plane, and wherein the processor is configured to position the item at a central location within the bar when the inclination of the mobile cellular telephone in the first plane is substantially zero, and wherein the display has a first area and the bar has a second area, the second area being smaller than the first area, and wherein the mobile cellular telephone is configured to be useable as a practical tool.