According to a report on Vietnam's mobile advertising market: - 79% of ad impressions on the InMobi network in Vietnam are on mobile apps, while 21% are on mobile websites. - Android continues to be the dominant mobile operating system with a 33% share of impressions, followed by Nokia OS at 29% and iOS at 19%. - Samsung is the top mobile device manufacturer, led by the Galaxy Y phone, while the iPhone and iPad also have strong shares of impressions.

1. VIETNAM MARKET OVERVIEW
79%
Ad impressions on
InMobi network
in Vietnam are
on mobile apps.
48.5% 9.8%
–
23.2
+ - Percentage point change since QE Jan 2013
QE April 2013 QE Jan 2013
Handset Share Of Impressions Manufacturer’s Share Of Impressions
-0.3
21%
Ad impressions on
InMobi network
in Vietnam are
on mobile websites.
www.inmobi.com / insights@inmobi.com / @InMobi
QE April 2013
Apple iPhone
Samsung Galaxy Y
Apple iPad
Nokia classic
Samsung Galaxy S II
Tablets and
Connected Devices
Smartphones
Mobile
App
Mobile
Web
+
19.1 + 4.0
Since Q4 2012
+15.6
-7.2
14.0%
7.5%
5.1%
2.3%
+7.0
Android Nokia OS iOS
31.6% 26.7% 19.4%
41.7%
Feature
Phones
1.9%
Android continues to grow
and has maintained its top
spot in the OS race
Device Share Of Impressions
33% 29% 19% 3%
2% 2%
Others
-6.8 +0.6 +7.0 -1.5 +0.1 +0.8
12%
OS Share Of Impressions Key Insight for QE April 2013
QE April 2013 Since QE Jan 2013
+ - Percentage point change since QE Jan 2013
QE April 2013