Building for Billions

Transcript

1. Building for Billions on Android Ankur Kotwal @ankurkotwal
2. Emerging markets will be at the forefront of smartphone growth 80% of smartphone growth till 2019 Source : GSMA Intelligence
3. 2016 2018 2019 Make your app work well regardless of how people are connected 2017 2020 47% 42% 37% 33% 29% 32% 32% 33% 34% 36% 21% 26% 29% 33% 36% Source : GSMA Intelligence 3G 4G 2G Share of mobile connections worldwide 100% 80% 60% 40% 20% 0% 1 Billion users will still be on 2G in 2020 1 Billion users will still be on 2G in 2020
4. Tailor your app experience to variations in mobile speed and connection quality Source : State of the Internet Report, Q4 2015 (Akamai) 15 UK KOR JPN IND ARG 30 22.5 7.5 Mobile Connectivity 0 AUS CHN IDN ZAF EGY SAU BRA CHL 50% 100% 75% 25% 0% VNM VEN % Above 4Mbps AVG Mbps
5. Help your users manage their data cost 3% AUS UK KOR EGY NGA 6% 4.5% 1.5% Post paid data prices (% of per capita GNI) Post paid data prices (% of per capita GNI) 0% Source : Measuring the Information Society Report 2015 (ITU) 4% 8% 6% 2% 0% HK CHN TH IDN MEX VNM IND BRA NOR HK UK NGA VNM AUS IDN BRA PHL IND EGY MEX KEN
6. Building for Billions Framework
7. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
8. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
9. Optimize networking Prioritize traffic - text first De-duplicate network requests Adjust behavior by connection
10. Optimize images Serve WebP images Serve dynamic image sizes
11. Useful Offline Experience Cache Image loading library
12. Useful Offline Experience Test in airplane mode
13. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
14. Screen Sizes Test with emulator configurations Build for small & medium screens Optimize for ldpi & mdpi Test with emulator configurations
15. Efficient Memory Usage Adjust footprint by available RAM ActivityManager.isLowRamDevice() ActivityManager.getMemoryClass() Avoid long-running processes
16. Memory Usage Android Studio memory monitor 512MB RAM 1GB RAM 12.51MB 36.39MB
17. Smart Storage Use Bounded caches Cache in getCacheDir() Allow install to SD card Measure via app settings
18. Backwards Compatibility targetSdkVersion 24 minSdkVersion 14 Android Support libraries Google Play services
19. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
20. APK Size Images are biggest offenders Reduce code size, use ProGuard Set following in build.gradle minifyEnable=true shrinkResources=true Multi-APK as an option
21. Data Use Allow user configurable data use
22. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
23. Battery Consumption Eliminate unneeded wakeups Batch network requests Use GcmNetworkManager API
24. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
25. Fast & Responsive UI Touch feedback everywhere UI always interactive Always target 60 fps Consider launch screens
26. UI Best Practices Adhere to Material Design Use Design Support library
27. Localization Support your users’ locale User appropriate fonts (e.g. Noto)
28. Building for Billions Framework 1.Connectivity 2.Device Capability 3.Data Cost 4.Battery Consumption 5.Content 6.Commerce
29. Monetization Advertisement In-App Purchase Subscription Paid App
30. Local Price Sub-dollar prices available in over 18 countries Helps offer locally affordable products
31. Kingdom Rush: Frontiers "After the change, Kingdom Rush Frontiers, showed an increase in average monthly revenue of 50% to 200% on those emergent markets. Even if we were gaining less in each sold game we were selling way more and reaching more players." Ironhide Game Studio
32. Building for Billions Playbook g.co/play/billionsplaybook ` Building for Billions Framework g.co/dev/billions
33. Thank you! Name @SocialContact