1. A handheld electronic device comprising: a processor apparatus comprising a processor and a memory; an input apparatus comprising a plurality of input members and being structured to provide input to the processor apparatus, a first set of the input members each having a Roman character assigned thereto, at least some of the input members in the first set of the input members having a first non-Roman character, a second non-Roman character, and a third non-Roman character assigned thereto; an output apparatus structured to receive output signals from the processor apparatus; the memory having stored therein a number of routines which, when executed on the processor, cause the handheld electronic device to be selectively switchable between: (i) a Roman character input mode, and (ii) a non-Roman character input mode, wherein in said Roman character input mode, each said Roman character may be selected and input into said processor apparatus for display on said output apparatus in response to actuation of the input member to which it is assigned, and wherein in said non-Roman character input mode, each first non-Roman character may be selected and input into said processor apparatus for display on said output apparatus in response to a first type of actuation of the input member to which it is assigned, each second non-Roman character may be selected and input into said processor apparatus for display on said output apparatus in response to a second type of actuation of the input member to which it is assigned, and each third non-Roman character may be selected and input into said processor apparatus for display on said output apparatus in response to a third type of actuation of the input member to which it is assigned.