A handheld electronic apparatus including a casing, a cover, a motherboard, an in-cell touch display module, a light guide member, and a touch module is provided. The cover covers a casing opening, and constitutes an accommodation space with the casing. The cover has a first area and a second area having a light transmissive icon. The motherboard is electrically connected with the in-cell touch display module and the touch module. The in-cell touch display module has a display area disposed beneath the first area. The light guide member is disposed within the accommodation space, and capable of guiding a light generated from a light emitting element to the light transmissive icon. The light guide member has a sheet-shaped portion disposed beneath the second area by corresponding to the light transmissive icon. The touch module is disposed within the accommodation space and beneath the second area.