Mobile App UX & UI Design
Elisa Ulloa
TellyTV – Mobile App Design
Role: Product Designer • May 2022–May 2024
Scope: End-to-end design of Telly’s mobile app, with a focus on responsive UX, accessibility, and seamless integration with their design system.
The Challenge
Telly is a free 55” 4K HDR smart TV that includes a unique second “Smart Screen” displaying news, weather, sports scores, fitness, games, and contextual ads that fund the hardware.
The mobile app had to support this ambitious model by:
Communicating the dual-screen value.
Streamlining account creation, TV activation, and widget personalization.
Enabling smooth management of referrals and user settings.
Maintaining brand consistency and strict accessibility standards.
My Process
Research & Discovery
Conducted stakeholder interviews and user surveys to understand motivations: free hardware, smart features, privacy considerations.
Defined personas such as “tech-savvy families” and “casual streamers” to guide design priorities.
Journey Mapping
Mapped core flows: onboarding, TV activation, widget setup, referrals, and account management.
Used an impact-versus-effort matrix to prioritize essential experiences.
Wireframes & UX Validation
Created low-fidelity wireframes to clarify content hierarchy and user goals.
Developed interactive prototypes for remote testing and iteration.
UI & Design System Integration
Built WCAG-compliant components in Figma with accessible color contrast, spacing, and keyboard navigation in mind.
Documented patterns for consistency with the broader design system.
Handoff & QA
Delivered detailed specs with interaction notes and accessibility guidance.
Collaborated with developers using Jira for iterative feedback and QA.
Launch & Impact Tracking
Supported tracking of KPIs like reservations, activations, and conversions.
Helped enable the company to reach 230,000 reservations in the first week and €100 K in launch revenue.
Outcome
Delivered a polished, accessible mobile app supporting both iOS and Android launches.
Ensured consistent design system integration with the Telly brand.
Enabled a seamless activation experience that promoted strong user adoption and measurable revenue growth.
Like this project
Posted Jul 10, 2025
Designed user flows and accessible UI, delivering specs that improved onboarding, personalization, and design system consistency.
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Timeline
May 1, 2022 - May 31, 2024
Clients
Telly
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