Full UI Modernization for the official Hi-Internet (Horizon Telecom International) customer self-service app. The goal was to replace the dated, non-authentic visual design with a modern, clean, and intuitive interface while retaining the existing functional workflow. The new design employs streamlined card layouts, superior typography, and a modern color scheme to significantly enhance aesthetics, build brand trust, and establish the app as a reliable digital tool for instant billing, account management, and support.