SmartPhone

FaST - Florida Institute of Technology

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SmartPhone

8/12/2011

FaST - Florida Institute of Technology

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Team Faculty Member: Dr. Veton KëpuskaStudents: Guinevere Shaw, Christopher Kovalik, Salvador Macaraig, Jordan Arnold and Team Advisor: Paul Karaffa

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FaST - Florida Institute of Technology

• What are the energy saving benefits:o from the convergence of consumer products

into one device such as a SmartPhone or Tablet, vs.

o single-function products, and o how are they changing the consumptive

behavior of humans?

The Project

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FaST - Florida Institute of Technology

• To investigate the battery consumption of smartphones and tablets using different applications.

• To compare popular applications to relevant stand-alone devices in the market today (portable gaming, scanning, music players, etc. )

• To compare applications and smartphone devices among each other

Project Overview

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• iOS (Apple)

• Blackberry (RIM)

• Android (Google)

• Windows Phone 7 (Microsoft)

Operating Systems

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• iPhone 4

• iPad 2

• Samsung Galaxy S Phone

• Samsung Galaxy Tablet

• Samsung Focus

• Blackberry Curve 9300

Phones and Tablets Tested:

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February 2011

35%

28%

27%

11%

USA Market Share by OS

Apple iOSBlackBerryGoogle AndroidOther

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Results using Software Measurements (Non-Invasive)

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PhoneTest

Samsung Galaxy S Phone

Samsung Galaxy

Tab

Samsung

Focus

iPhone 4

iPad 2

Blackberry Curve

Percentage of battery Remaining

X X X X X XBattery Temperature X X X XBattery Voltage X X X

Measurements Provided By OS

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Applications that we have written (iOS, Android), downloaded, (Blackberry), or that are built-in (Windows 7)

iOS

Andr

oid

Blac

kber

ry

Win

dows

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Units Samsung Focus

Samsung Galaxy

Black-berry Iphone 4 Galaxy

Tablet Ipad 2

[V] 3.7 3.7 3.7 3.7 3.7 3.7[Wh] 5.55 5.55 4.3 5.25 14.8 25[mAh] 1500 1500 1150 1420 4000 4400

Battery Information

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Windows 7 Focus

Galaxy S Phone

Blacbarry Curve 9300

iPhone4

Galaxy Tab

iPad2

Phon

esTa

blet

s

-1.6 -1.4 -1.2 -1 -0.8 -0.6 -0.4 -0.2 0

Average Relative Non-Intrusive Energy Consumption of SmartPhones and Tablets

Average [%] Drop of Energy Accros all Applicable Applications

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Windows 7 Focus

Galaxy S Phone

Bleckberry Curve 9300

iPhone4

Galaxy Tab

iPad2

Phon

esTa

blet

s

-0.25 -0.2 -0.15 -0.1 -0.05 0

Average Capacity Drop [Wh]

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FaST - Florida Institute of Technology

[Wh]Power Consumption Smart Device

Alarm Clock 3 0.0685 Radio (FM/AM) 8 0.0852Camera (5MP) 4.71 0.0958mp3 Player 3.44 0.0763Voice Recorder 0.1125 0.0726Netbook 35 0.1054Handheld Game Device 3 0.1114TV Service 44 0.0943

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FaST - Florida Institute of Technology

Alarm Clock Example 3 [Wh]

Windows 7 Focus

Galaxy S Phone

Blacberry Curve 9300

iPhone4

Galaxy Tab

iPad2

Average

Phon

esTa

blet

s

-0.16 -0.14 -0.12 -0.10 -0.08 -0.06 -0.04 -0.02 0.00

Alarm Clock

[Wh]

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Comcast TV Box 44 [Wh]

Windows 7 Focus

Galaxy S Phone

Blacberry Curve 9300

iPhone4

Galaxy Tab

iPad2

Average

Phon

esTa

blet

s

-0.20 -0.18 -0.16 -0.14 -0.12 -0.10 -0.08 -0.06 -0.04 -0.02 0.00

ESPN Mobile

[Wh]

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Partial Results using Invasive Measurements

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FaST - Florida Institute of Technology

Windows 7 Focus

Galaxy S Phone

Blackberry Curve 9300

iPhone4

Galaxy Tab

iPad2

-100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0

Consumption mAh

Average Drop in [mAh]

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Discharge Rate of the Battery with the Screen on.

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FaST - Florida Institute of Technology

9:30:0

0

9:35:0

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10:00

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Lunc

h(12:3

6)

2:05:0

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Meetin

g 3:05

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9:27:0

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10:27

:00

10:51

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1

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Samsung Galaxy Phone

[Wh]

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9:35:0

0

9:40:0

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9:45:0

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9:50:0

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10:00

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Lunc

h(12:3

6)

2:05:0

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Meetin

g 3:05

6:05:0

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10:27

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10:51

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Rate of Capacity Loss for Samsung Galaxy PhoneWh Capacity

[Wh]

FaST - Florida Institute of Technology

9:40:0

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10:00

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10:05

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10:10

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2:15:0

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End o

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Day

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h (12

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0.5

1

1.5

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2.5

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3.5

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Blackberry Curve 9300

[Wh]

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9:40:0

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9:45:0

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10:05

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End o

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6:15

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Lunc

h (12

:36)

2:15:0

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6:10:0

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-1

0

1

2

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Rate of Capacity Loss for Blackberry Curve 9300Wh Capacity

[Wh]

FaST - Florida Institute of Technology

What Next?

• Complete Intrusive Testing for iPhone 4 and iPad 2

• Complete Discharge Rate of each phone and tablet

• Complete Measurement in “Sleep Mode”

• Complete literature review of the material

• Include this all into one Comprehensive Paper.

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