Oh yes, you can!
We have fully supported platform for Android (e.g. Samsung, HTC, OnePlus, Huawei, LG, Nexus, Motorola) and iOS (iPhone, iPad) for both smart phones and tablets. Recording your answers with a mobile device doesn't require an app, you can record your answers directly on the interview page.
Some mobile devices support adding your videos to the interview after recording from the device's gallery.
More information on how to prepare for a video interview can be found via this link; Tips and guidelines.