Silicon Image, the company behind leading HD connectivity standards such as HDMI®, MHL®, and WirelessHD®, invites you to enter the Dual Screen App Challenge. The goal of this contest is to showcase Silicon Image technologies by creating awesome Android games and apps that take advantage of the dual screen capabilities that were introduced in Android 4.2 Jellybean. In addition, we want developers to create games and apps that showcase additional advanced features of MHL and/or WirelessHD, such as:

  • Transmitting video up to 4K Ultra HD resolution with no lag
  • Supporting up to 8 channels of surround sound
  • Providing power to charge the smartphone (for MHL apps)

Submissions will be Android apps that simultaneously show one thing on the phone screen, and something else on the connected external display, such as an HDTV.

You can enter as many apps as you’d like, as long as each one fits into one of the following three categories:

  • Games (Any game genre)
  • Productivity (Office style apps, such as word processing, spreadsheets, and presentations)
  • Entertainment /Other (Everything else)

What to build

Some examples might be a dungeon game that shows the main game on the HDTV, and the character inventory or maps on the phone; a presentation app that shows the slides on the HDTV, and the speaker notes and timer on the phone; or a Karaoke app that would show the song lyrics on the HDTV, and the playlist of singers and songs on the small screen. Check out our App Examples page for some visual idea jumpstarters.

Check out the Resources tab for a couple of sources of developer documentation to learn how best to implement dual screen, as well as links to MHL adapters and wireless game controllers for development and testing.

Hackathon Sponsors


$80,000 in prizes

Best in Show

Each category will have a winner who will receive $20,000. In addition, those three will be ranked, and the top score across the three category winners will receive an additional $25,000 for a total of $45,000!

Runner Up

Each category will have a winner who will receive $20,000. In addition, those three will be ranked, and the second score across the three category winners will receive an additional $10,000 for a total of $30,000!

Popular Choice (5)

The 5 submissions with the most public votes will each receive $1,000!

Devpost Achievements

Submitting to this hackathon could earn you:


This challenge is open only to (1) individuals and companies who are legal residents of the fifty (50) United States and the District of Columbia, Canada (excluding Quebec), United Kingdom, Germany, India, Finland, Sweden, Japan, China, Russia, Italy, Spain, Ireland, and the Netherlands; (2) at least eighteen (18) years old or the age of majority in the participant’s jurisdiction of residence at time of entry, whichever is greater (for individuals and team entrants); (3) have internet access at the time of entry; and (4) have a valid YouTube, Vimeo, or Youku account.  


  • First and foremost, your game or app must run in a dual screen mode, where the phone screen shows one thing and the connected external display shows something different, yet connected. 
  • Your game or app must be publicly available, such as on the Google Play Store. 
  • Even though Android 4.2 Jellybean runs on both phones and tablets, we’re looking for games and apps that specifically target phones, even if they also run on tablets. 
  • The content displayed on the HDTV must be in landscape orientation, the native orientation of HDTVs and monitors. The content on the phone can be in either orientation.
  • In addition to your app, you’ll need to create and post a short video showing how your app works. This video will be used not only for the judges to get a feel for your game or app, but also for the public voting, so make it a good one!
  • Don't forget to tweet about the contest! Use the hashtag #mobile2screen 

How to enter

It's simple! Just click on the Register for This Challenge button on the right and fill out the required fields. Make sure that your app or game makes full use of Dual Screen (again, check out the Resources tab for details), that it's available on a commercial app store such as Google Play, and that you've created a short video showing and describing your game or app.


Michael Bergen

Michael Bergen
Sr. Business Development Manager, Silicon Image, Inc.

Magnus Ekenheim

Magnus Ekenheim
Director Developer Technical Services, Sony Mobile

Mark Murphy

Mark Murphy
Owner, CommonsWare

Mike Schwartz

Mike Schwartz
Membership Manager, Application Developers Alliance

Neil Trevett

Neil Trevett
Vice President Mobile Ecosystem, Nvidia

Kristan "Krispy" Uccello

Kristan "Krispy" Uccello
Developer Advocate, Google

Mike Yuen

Mike Yuen
Senior Director, Snapdragon Gaming, Qualcomm

Judging Criteria

  • Best use and display of different content and information on dual separate screens
    Does making the app dual screen significantly improve the user experience? Does the app make the best use of both the big screen and the small one?
  • Best use of Silicon Image technologies and features
    Apps should make use of the sub-frame latency performance inherent in Silicon Image technologies such as MHL and WiHD. Apps or games that use the 8-channel surround sound and charging capabilities of MHL are encouraged.
  • Innovation & Creativity
    Is this a new and incredible way to use dual screens on Android? Does the app creatively use external accessories (e.g. Bluetooth keyboard/mouse, dock, game controller, etc.) for an enhanced user experience?
  • Public Vote
    Which apps get the most votes?

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