“SELECTING NEW HANDPHONE”
Almost all people in the world have a handphone. Handphone has many functions such as for
communication with other people around the world, taking pictures, watching videos, searching
the meaning of a word, calculate, browse information fast and easily, etc. Currently, Della as
Master in Business Administration of ITB at second grade whose daily life that highly dependent
on her cellphone for her personal life, school life and business life. That is why handphone is an
electronic technology that very important for her life. In the last 3 months, since the disrupted her
school, she could not sleep. The reason for this was because she had a problem with her
cellphone while she was using her cellphone. The cellphone suddenly turned itself off then, it
didn't want to turn on even on the charge. Therefore, Della brought the cellphone to a service
man who he had trusted for the past 5 years. The service person said that the cellphone connector
was damaged due to prolonged usage. SHe has experienced this several times, so that it cannot
be fixed, they suggested Della to replace it with a new cellphone.
Della has a preference for the specifications of the mobile phone to be purchased, because the
productivity that she does is very dependent on this device. Della wants mobile performance that
is fast, stable, and feels not heavy even though it is used to access many applications though. So
that Della does not compromise for battery life that is more durable. In the current era of
information disclosure, privacy is a rare component that is rarely provided by technology
companies that are able to protect users from various types of malware from illegal applications.
Android smartphones are produced by many vendors, so they don't have certain characteristics
that make them iconic. Unlike the iPhone which is only produced and will always belong to
Apple. One of the best features that the iPhone has as an iPhone advantage is TouchID. Although
some other Android brands have adopted fingerprint security, the iPhone series with TouchID is
considered the most accurate. Now there are two of the best operating system choices, namely
Android and iOS.
Operating System
Operating system (OS) is one important factor for gadget users in determining the smartphone of
choice. Because the operating system's performance has proven capable of influencing many
things, ranging from user experience, available features, to software update schedules. There are
two Operating Systems that are very popular in this era, two of them are Google Android and
Apple iOS. IOS OS is closed source which means the user cannot change the device to their
liking. Because of this, iOS is arguably better in the privacy sector and has fewer security holes
than smartphones with the Android operating system. This is evidenced, throughout the course of
the iPhone in the smart phone industry, not a single hacker was able to break into the security
features of this device, not even FBI. As an Android user, you certainly can't get the above
protection, especially if the smartphone used has been rooted so that it becomes an easy target
for irresponsible hackers.
But not many people know that Android is designed to be adjusted. Various cell phone
companies such as Asus, LG, HTC, Sony, Samsung, and others are a few examples of
technology manufacturers offering Android-based phones. Therefore, do not be surprised if this
Android phone has a lot of diverse views when compared to IOS. To be able to change the
appearance of Android is also very easy, by installing the Launcher application. Then the
appearance of your Android phone can be changed at will. In fact, with Laucher you can also
make your Android phone similar to IOS. In addition, Multi Windows is the most prominent
feature on the Galaxy Note Android phone. Also, Multi Windows or multitasking allows you to
run two applications at the same time. For example, you can watch videos while responding to e-
mail or browsing at the same time.
Android is a mobile operating system based on open source, which can be adopted by anyone
and by any mobile manufacturer. Because mobile devices are diverse, Android cellphone battery
capacity is also more diverse if compared to IOS-based phones. Android phones also usually last
longer. However, this is certainly still dependent on the capacity of the battery itself.
Solution
From the case that Della facing, the first step is to develop a graphical representation of the
problem in terms of the overall foal, the criteria, and the decision alternatives. Della’s goal is
selecting a new phone, the criterias are price, privacy, design, and battery.The alternative choice
of Della are iOS and Android.
Selecting New Phone
(1.00)
Price Privacy Design Battery
iOS Android
Next, considered the criteria weight
Criteria Weight
Price 5
Privacy 9
Design 3
Battery 7
After that, normalize the criteria value of each paired column by dividing each value in the
matrix column with the corresponding column addition results. And calculate the average value
of the sum of each matrix line.
Average
Criteria Price Privacy Design Battery Criteria Price Privacy Design Battery
Criteria
Price 1.000 0.556 1.667 0.714 Price 0.208 0.208 0.208 0.208 0.208
Privacy 1.800 1.000 3.000 1.286 Privacy 0.375 0.375 0.375 0.375 0.375
Design 0.600 0.333 1.000 0.429 Design 0.125 0.125 0.125 0.125 0.125
Battery 1.400 0.778 2.333 1.000 Battery 0.292 0.292 0.292 0.292 0.292
Total 4.800 2.667 8.000 3.429 Total 1 1 1 1 1
Untuk hasil yang valid, diperlukan untuk cek konsistensi ratio (CR) dari matrik perbandingan
berpasangan kriteria. Jika CR > 0.1 maka harus diulang kembali perbandingan berpasangan
sampai didapat CR ≤ 0.1
1.000 0.556 1.667 0.714 0.979 0.833
1.8.00 1.000 3.000 1.286 1.762 1.5
[ ] x [ ] = [ ]
0.600 0.333 1.000 0.429 0.587 0.5
1.400 0.778 2.333 1.000 1.370 1.167
0.833 + 1.5 + 0.5 + 1.167
𝜆 max = = 4
4
𝜆𝑚𝑎𝑥−𝑛 4−4
𝐶𝐼 = = 4−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.9 = 0
Hitung bobot alternative untuk kriteria price, privacy, design, and battery.
Alternative Row
Price IOS Android Price IOS Android
to Price Average
iOS 5 IOS 1.000 0.714 IOS 0.417 0.417 0.417
android 7 Android 1.400 1.000 Android 0.583 0.583 0.583
Total 2.400 1.714 Total 1 1 1
1.000 0.714 0.417 0.833
[ ] x [ ]= [ ]
1.400 1.000 0.583 1.166
0.833 + 1.166
𝜆 max = = 2
2
𝜆𝑚𝑎𝑥−𝑛 2−2
𝐶𝐼 = = 2−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Alternative to Row
Privacy iOS Android Privacy iOS Android
Privacy Average
iOS 9 iOS 1.000 3.000 iOS 0.750 0.750 0.75
android 3 Android 0.333 1.000 Android 0.250 0.250 0.25
Total 1.333 4.000 Total 1 1 1
1.000 3.000 0.75 1.5
[ ] x [ ]= [ ]
0.333 1.000 0.75 0.5
1.5 + 0.5
𝜆 max = = 2
2
𝜆𝑚𝑎𝑥−𝑛 2−2
𝐶𝐼 = = 2−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Alternative to Row
Design iOS Android Design iOS Android
Design Average
iOS 9 iOS 1.000 1.286 iOS 0.563 0.563 0.563
Android 7 Android 0.778 1.000 Android 0.438 0.438 0.438
Total 1.778 2.286 Total 1 1 1
1.000 1.286 0.563 1.125
[ ] x [ ]= [ ]
0.778 1.000 0.438 0.875
1.125 + 0.875
𝜆 max = = 2
2
𝜆𝑚𝑎𝑥−𝑛 2−2
𝐶𝐼 = = 2−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Alternative Row
Battery iOS Android Battery iOS Android
to Battery Average
iOS 3 iOS 1.000 0.429 iOS 0.300 0.300 0.300
Android 7 Android 2.333 1.000 Android 0.700 0.700 0.700
Total 3.333 1.429 Total 1 1 1
1.000 0.429 0.3 0.6
[ ] x [ ]= [ ]
2.333 1.000 0.7 1.4
0.6 + 1.4
𝜆 max = = 2
2
𝜆𝑚𝑎𝑥−𝑛 2−2
𝐶𝐼 = = 2−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Ranking Criteria
Goals Selecting New Phone (1.000)
Price Privacy Design Battery
Criteria (0.2) (0.375) (0.125) (0.3)
- iOS (0.417) -iOS (0.75) - iOS (0.563) - iOS (0.3
Alternative - Android (0.583) - Android (0.25) - Android (0.438) -Android (0.7)
Price Privacy Design Battery
IOS 0.417 0.750 0.563 0.300
Android 0.583 0.250 0.438 0.700
0.979
0.417 0.750 0.563 0.3 1.762 0.525
[ ] x [ ]= [ ]
0.583 0.250 0.438 0.3 0.587 0.474
1.370
From the data above, the best alternative that should Della choose is iOS with score 0.525.
But these calculations are not enough to help Della to find her new cellphone. Apple's iOS itself
has several types of mobile phones that Della needs to consider to be selected according to the
criteria he has made. In selecting the type of cellphone, Della still put the same criteria but with
different weighting. Where the price is not too expensive to be the most important thing to
consider by Della.
Criteria Weight
Price 9
Privacy 3
Design 5
Battery 7
Alternative Row
Price iP 7 iP 8 iP XR Price iP 7 iP 8 iP XR
to price Average
iP 7 9 iP 7 1 1.285 9 iP 7 0.529 0.529 0.529 0.529
iP 8 7 iP 8 0.778 1 7 iP 8 0.412 0.412 0.412 0.412
iP XR 1 iP XR 0.111 0.143 1 iP xr 0.059 0.059 0.059 0.059
Total 1.889 2.429 17 Total 1 1 1 1
1.000 1.285 9 0.529 1.588
[0.778 1.000 7] x [0.412] = 1.235
0.111 0.143 1 0.059 0.176
1.588 + 1.235 + 0.176
𝜆 max = = 3
3
𝜆𝑚𝑎𝑥−𝑛 3−3
𝐶𝐼 = = 3−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
alternative Row
to privacy Privacy iP 7 iP 8 iP XR Privacy iP 7 iP 8 iP XR Average
iP 7 7 iP 7 1 0.875 0.778 iP 7 0.292 0.292 0.292 0.292
iP 8 8 iP 8 1.143 1 0.889 iP 8 0.333 0.333 0.333 0.333
iP xr 9 iP XR 1.286 1.125 1 iP XR 0.375 0.375 0.375 0.375
Total 3.429 3.000 2.667 total 1 1 1 1
1.000 0.875 0.778 0.292 0.875
[1.143 1.000 0.889] x [0.333] = 1.000
1.286 1.125 1.000 0.375 1.125
0.875 + 1.000 + 1.125
𝜆 max = = 3
3
𝜆𝑚𝑎𝑥−𝑛 3−3
𝐶𝐼 = = 3−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Alternative Row
to design Design iP 7 iP 8 iP XR Design iP 7 iP 8 iP xr Average
iP7 9 iP 7 1 3 1.80 iP 7 0.529 0.529 0.529 0.529
iP 8 3 iP 8 0.333 1 0.60 iP 8 0.176 0.176 0.176 0.176
iP XR 5 iP XR 0.556 1.667 1 iP XR 0.294 0.294 0.294 0.294
Total 1.889 5.667 3.400 Total 1 1 1 1
1.000 3.000 1.8 0.529 1.588
[0.333 1.000 0.6] x [0.176] = 0.176
0.556 1.667 1 0.294 0.294
1.588 + 0.176 + 0.294
𝜆 max = = 3
3
𝜆𝑚𝑎𝑥−𝑛 3−3
𝐶𝐼 = = 3−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Alternative Row
to battery Battery iP 7 iP 8 iP XR Battery iP 7 iP 8 iP XR Average
iP 7 8 iP 7 1 1.6 0.889 iP 7 0.364 0.364 0.364 0.364
iP 8 5 iP 8 0.625 1 0.556 iP 8 0.227 0.227 0.227 0.227
iP XR 9 iP XR 1.125 1.8 1 iP XR 0.409 0.409 0.409 0.409
Total 2.750 4.4 2.444 Total 1 1 1 1
1.000 1.600 0.889 0.364 1.091
[0.625 1.000 0.556] x [0.227] = 0.682
1.125 1.800 1.000 0.409 1.227
1.091 + 0.682 + 1.227
𝜆 max = = 3
3
𝜆𝑚𝑎𝑥−𝑛 3−3
𝐶𝐼 = = 3−1 = 0
𝑛−1
𝐶𝐼 0
𝐶𝑅 = 𝐶𝑅 = 0.00 = 0
Ranking of Criteria
Price Privacy Design Battery
iPhone 7 0.529 0.292 0.529 0.364
iPhone 8 0.412 0.333 0.176 0.227
iPhone XR 0.059 0.375 0.294 0.409
0.979 0.392
0.529 0.292 0.529 0.364 1.762
[0.412 0.333 0.176 0.227] x [ ] = [0.299]
0.587
0.059 0.375 0.294 0.409 1.370 0.309
From the data above, iPhone 7 is the best alternative.
Exhibit 1
Comparition of factors related to Operating System OS selected as possible type
Summary
Variants iPhone 7 Plus iPhone 8 Plus iPhone XR
Critic Rating
User Rating
Performance Quad Core Hexa Core Hexa Core
Display 5.5” (13.97 cm) 5.5” (13.97 cm) 6.1” (15.49 cm)
Storage
Camera 12 MP + 12 MP 12 MP + 12 MP 12 MP + 12 MP
Battery 2900 mAh 2675 mAh 2942 mAh
Ram 3 GB 3 GB 3 GB
Design
Build Material Case: Metalback: Case: Back: Mineral Glass
Metal Aluminiumback:
Mineral Glass
Thickness 7.3 mm 7.5 mm 8.3 mm
Width 77.9 mm 78.1 mm 75.7 mm
Weight 188 grams 202 grams 194 grams
Waterproof Water resistant Water resistant Water resistant (up to
30 minutes in depth of
1 meter)
Ruggedness Dust Proof Dust Proof Dust Proof
Height 158.2 mm 158.4 mm 150.9 mm
Colours Black, Gold, Silver, Red, Gold, Silver, Black, Blue, Red,
Rose Gold, Jet Black Space Gray White, Yellow, Coral
Special Features
Fingerprint Sensor Front Front Nope
Other Sensor Light sensor, Proximy Light sensor, Proximy Light sensor, Proximy
sensor, sensor, sensor,
Accelerometer, Accelerometer, Accelerometer,
Barometer, Crompass, Barometer, Crompass, Barometer, Crompass,
Gyroscope Gyroscope Gyroscope
Fingerprint Sensor Nope
Exhibit 2
Comparition of factors related to Operating System Android selected as possible type
Summary
Variants Asus 6Z OnePlus 7 OPPO Reno Samsung
Galaxy A70
Critic Rating Octa core Octa core Octa core Octa core
User Rating
Performance Quad Core Hexa Core Hexa Core
Display 6.4” (16.26 cm) 6.41” (16.28 cm) 6.4” (16.26 cm) 6.7” (17.02
cm)
Storage 64 GB 128 GB 128 GB 128 GB
Camera 48 MP + 13 MP 48 MP + 5 MP 48 MP + 5 MP 32 MP + 8 MP
+ 5 MP
Battery 5000 mAh 3700 mAh 3765 mAh 4500 mAh
Ram 6 GB 6 GB 8 GB 6 GB
Design
Samsung
Variants Asus 6Z OnePlus 7 OPPO Reno Galaxy A70
Thickness 8.44 mm 8.2 mm 9 mm 7.9 mm
Width 75.4 mm 74.8 mm 74.3 mm 76.7 mm
Weight 190 gram 182 grams 185 grams 183 grams
Height 159.1 mm 157.7 mm 156.6 mm 164.3 mm
Twilight Silver, Midnight Red, Mirror Jet Black, Ocean Black, Blue,
Colours
Black Gray Green White
Battery
OnePlus OPPO Samsung
Variants
Asus 6Z 7 Reno Galaxy A70
User
Replaceable
Up to 33.3 Up to 28
Talktime
hours (3G) hours (3G)
Quick
Charging Quick v4.0
Type Li-Polymor Li-ion Li-ion Li-ion
3700
Capacity
5000 mAh mAh 3765 mAh 4500 mAh
Exhibit 3
Random Index
n 1 2 3 4 5 6 7 8 9 10
RI 0.00 0.00 0.58 0.90 1.12 1.24 1.32 1.41 1.45 1.49
