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Testing the cell phone for water resistance

Dear friends! We highly not recommend to do this test yourself, as this may damage the display!


Trying to understand how to compose and summarize frequently asked questions about repairs, we decided not to go the easy way, but instead try to answer most of them, based on our experience and comments from our viewers and subscribers. I want to say at once that many topics often do not require in-depth analysis and will be provided simply as recognized facts (axioms) with a brief description and images to help understand the problem and its solution.

 

And this time I would like to dwell on testing the phone for water resistance using a barometer function, yes! and we have a video version - link. Of course, this test will not give a 100% guarantee and is not an absolute solution, but will allow you to understand the problems at an early stage of diagnosis. And if this method is often used and authorized service centers, then why are we worse!

And so from a long introduction, we turn to the conditions for conducting and the devices on which we will use this function.

Condition 1. We use 2 phones with the function of a barometer, one of which has obvious damage to the hermetic layer.

Condition 2. For testing, use the built-in smartphone application.

Condition 3. Gently press the surface of the back cover in two places and record the readings Before, After and During the procedure.

Condition 4. Use the same brand of smartphones, in our case, the Samsung Galaxy A5 (2018) and the Samsung Galaxy S7 Edge. Smartphones have the basic characteristics of software and hardware.

Condition 5. The test is conducted by a specialist with diagnostic experience since there is a high probability of damaging the display.

Condition 6. The same temperature conditions for the tested models.

 

Actually the testing process itself.

Input the engineering code * # 0 * # and go inside the phone test menu, select the section - Sensor and monitor the results in the Barometer Sensor section and the Barometer and Altitude lines (height above sea level).

 

We write down indications Before:

We press the back cover and write down the results:

And the same procedure for data After.

Compare the results

Samsung Galaxy A5 (2018) BEFORE IN PROCESS AFTER
Barometer  986.65  987.5  985.96
Altitude    223.88 217.64 229.75
Samsung Galaxy S7 Edge      
Barometer 983.11  983.11 983.08
Altitude 254.02 254.05  254.29

                                                                                                                  

Conclusion

Based on these indications and using simple formulas from physics, we can say with confidence that the Samsung Galaxy A5 (2018) reacts on the pressure to the cover. What is the reason? Of course with tightness. The air inside the phone responds to pressure (in the process of pressing and after) for the Samsung Galaxy A5 (2018) and the indications of the Samsung Galaxy S7 Edge is almost unchanged. And our idea is that since the density inside the phone increases and the pressure changes accordingly, nothing penetrates inside and nothing comes out, and in this case, what works for air also works for water. 


In the end, I would like to emphasize that this approach cannot be an absolute solution, but only one of the tools in the hands of a competent specialist, so use this solution wisely and be attentive and careful!

#vrm24 #vrm24com #sonyxperia #sony