Nov 17, 2014
Qualcomm products mentioned within this post are offered by Qualcomm Technologies, Inc. and/or its subsidiaries.
In my last post I showed you research on battery drain. This time I’ll give you a look at turning off chatty apps, both before and after using Trepn™ Profiler, a product of Qualcomm Technologies, Inc.
How many apps are on your phone?
First, the math I showed you last time from Google I/O assumed 30 apps installed on a smartphone.
That may seem far-fetched to some people, but a report from Statista and Mashable based on data from Google’s Our Mobile Planet project shows that, globally, the average smartphone has 26 apps installed. In the United States, the average smartphone has about 33 apps installed, and in South Korea the figure goes up to 40 apps installed. That’s in line with the calculations on how quickly apps devour battery life.
Don’t forget that in some cases users have no control over the apps draining the battery. Between the handset manufacturer and the carrier, most smartphones come with a handful of preinstalled apps for things like location, news, weather and media that chisel away at battery life, but which users can’t remove, short of rooting the device.
So by default, smartphones come ready to consume power just about any way they can.
Using Trepn Profiler – Test 1
Take for example the up- and down-arrows on your phone’s menu bar. They flash even when you’re not using your phone because installed apps are using the cellular radio to send and receive data, which consumes power.
Trepn Profiler is designed to collect activity data from different functions on the device, then lets you analyze it on your mobile device or PC. I used Trepn Profiler to see what my phone was doing while it sat idle on my desk for an hour.
I may not have been using my phone, but something was.
Using Trepn Profiler – Test 2 (chatty app turned off)
I had a hunch that a particular social app was the source of all the activity, so I disabled updates on it and repeated my experiment, this time for 30 minutes.
If you’re a developer, you can use Trepn Profiler to profile the apps you create. The resulting charts show you how particular functions in your app affect components on the mobile device – CPU, GPU, Wi-Fi, cellular radio, display, etc. – and ultimately affect your customers’ battery life. Plus, on Qualcomm® Snapdragon™ Mobile Development Platforms, you can chart the power consumption of your app all the way down to the battery level.
Whether you’re a developer or a user, Trepn Profiler is an easy-to-download and easy-to-use tool for monitoring app performance. Following my example above, you can use it to test your device with certain apps disabled until you determine which ones are consuming power needlessly.