An electronic device comprising a touch screen, a plurality of first keys arranged along a periphery of the touch screen, a storage configured to stores a character array, and at least one controller configured to execute a character editing process according to an operation on the first key by allocating at least one of characters and phrases included in the character array to each of the first keys and accepting, when detecting the operation on one of the first keys, editing the at least one of the characters and the phrases allocated to the first key on which the operation is detected.