The document outlines five key tests that should be performed for quality control on mobile phones: 1) the display test to check LCD brightness, color gamut, and uniformity, 2) the touch panel test to check responsiveness at various points, 3) the Wi-Fi test to check signal strength and encryption protocols, 4) the battery test to check lifespan during different usage modes and voltage levels, and 5) the sound test to check for distortions or crackling when playing audio at maximum volume for 5-10 minutes. Performing these five tests can help manufacturers ensure their mobile phones meet quality standards.

1. +

2. +The mobile phone
industry has been
growing at an
exponential pace
in the past
decade.

3. +The mobile phone
industry has been
growing at an
exponential pace
in the past
decade.
Currently, 80% of
Internet users
own a smartphone. ..
http://www.smartinsights.com/mobile-marketing/mobile-marketing-analytics/mobile-marketing-statistics/

4. +
…making mobile phones one
of the most competitive
markets out there.

5. +
How can you
stand out?

6. +
How can you
stand out?
By delivering a top-notch
quality product!

7. +
Make sure to carry out the
Top 5 Tests for Mobile Phones for quality
control on your next inspection!

8. +
Mobile Phone Test #1
The Display Test

9. +
With the use of a
chroma meter,
scan and check
the following:

10. +
With the use of a
chroma meter
scan and check
the following: • LCD Brightness

11. +
With the use of a
chroma meter,
scan and check
the following: • LCD Brightness
• Color Gamut

12. +
With the use of a
chroma meter,
scan and check
the following: • LCD Brightness
• Color Gamut
• Brightness
Uniformity

13. +
With the use of a
chroma meter,
scan and check
the following: • LCD Brightness
• Color Gamut
• Brightness
Uniformity
Make sure these are all within their
recommended parameters and there are no
distortions in color.

14. +
Mobile Phone Test #2
The Touch Panel
Test

15. + Pick a series of
points you want to
test on the selected
touch panels

16. + Pick a series of
points you want to
test on the selected
touch panels
Using a testing
machine, check for
responsiveness with a
metalized rubber tip or
any other conditions you
need specific to your
product.

17. +You can use points, patterns,
swipes or randomized motions.

18. +You can use points, patterns,
swipes or randomized motions.
Just make sure to communicate
your specifications to your QC
team.

19. +You can use points, patterns,
swipes or randomized motions.
Just make sure to communicate
your specifications to your QC
team.

20. +
Mobile Phone Test #3
The Wi-Fi Test

21. +
A Wi-Fi
performance check,
with the use of a
test machine at your
factory, is a must.

22. +
Be sure to verify all of the
following:
1) Signal Strength

23. +
Be sure to verify all of the
following:
1) Signal Strength
2) WPA Encryption

24. +
Be sure to verify all of the
following:
1) Signal Strength
2) WPA Encryption
3) WPA2 Encryption

25. +
Be sure to verify all of the
following:
1) Signal Strength
2) WPA Encryption
3) WPA2 Encryption
4) WPE Encryption

26. +
Be sure to verify all of the
following:
1) Signal Strength
2) WPA Encryption
3) WPA2 Encryption
4) WPE Encryption
5) Peak Data Rate

27. +
Mobile Phone Test #4
The Battery Test

28. +Test battery lifespan by:
1) Using a testing machine at your factory,
connect the battery to a power supply

29. +Test battery lifespan by:
1) Using a testing machine at your factory,
connect the battery to a power supply
2) Calculate consumption while performing in
different modes such as 2G/3G calling, video
playback and video calling mode

30. + Then with the use of a multimeter:
1. Take a mobile phone battery at
full charge

31. + Then with the use of a multimeter:
1. Take a mobile phone battery at full
charge
2. Identify the battery’s terminals
labeled “+” and “-”

32. + Then with the use of a multimeter:
1. Take a mobile phone battery at full
charge
2. Identify the battery’s terminals
labeled “+” and “-”
3. Turn the dial on the multimeter
and set it to read DC volts

33. + Then with the use of a multimeter:
1. Take a mobile phone battery at full
charge
2. Identify the battery’s terminals
labeled “+” and “-”
3. Turn the dial on the multimeter and
set it to read DC volts
4. Touch the tip of the red probe to
the terminal labeled “+”

34. + Then with the use of a multimeter:
1. Take a mobile phone battery at full
charge
2. Identify the battery’s terminals
labeled “+” and “-”
3. Turn the dial on the multimeter and
set it to read DC volts
4. Touch the tip of the red probe to the
terminal labeled “+”
5. Maintain contact with the
terminal while pressing the tip of
the black probe to the “-”
terminal

35. + Then with the use of a multimeter:
1. Take a mobile phone battery at full
charge
2. Identify the battery’s terminals
labeled “+” and “-”
3. Turn the dial on the multimeter and
set it to read DC volts
4. Touch the tip of the red probe to the
terminal labeled “+”
5. Maintain contact with the terminal
while pressing the tip of the black
probe to the “-” terminal
6. Verify the charge by checking
the multimeter’s digital reading

36. +
Make sure the
multimeter has the right
voltage reading, in order
to know if the battery is
charging to it’s designed
capacity

37. +
Mobile Phone Test #5
The Sound Test

38. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound

39. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound
• Song

40. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound
• Song, or
• Video

41. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound
• Song, or
• Video
Raise the phone’s speaker volume
to maximum capacity

42. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound
• Song, or
• Video
Raise the phone’s speaker volume to
maximum capacity
Hold for 5-10 minutes to ensure
there is no form of distortion or
crackling sounds coming from the
speaker

43. +
To perform a sound test on the mobile
phone, simply play a:
• Recurring sound
• Song, or
• Video
Raise the phone’s speaker volume to
maximum capacity
Hold for 5-10 minutes to ensure there
is no form of distortion or crackling
sounds coming from the speaker
If the audio sounds distorted, the
device fails the test

44. +
That’s it!

45. +
Now you have learned the
Top 5 Tests for Mobile Phones

46. +
So go put them to good use!

47. +
So go put them to good use!
And guarantee yourself the
best quality product available.

48. +
Think you might want
product inspection help
from QC experts?

49. +
Below are just a few companies
that have benefited from working
with us:

50. +
And you can too.
Just click here.

51. +
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