Battery and Sound:
The QMobile Noir X90 houses an 1800 mAh Li-Ion battery which, given the low power requirements of its components, should suffice for a day of moderate use. Battery life varies based on usage but remains one of the phone's more limiting aspects. As for sound, the inclusion of a 3.5 mm headphone jack and loudspeaker accommodates both personal and hands-free audio experiences, aligning with the basic essentials expected by users.