1. Abstract


The idea for our project, the investigation of GSM radiation produced by different brands of phones, stems from technology that we use everyday -- this includes laptops, television, and most importantly, our mobile phones.

As smartphones are being increasingly used around the globe, us as a human species, are depending on this small piece of technology more and more as the days goes by. Almost everything we need are in our phone -- this includes, but not limited to: flashlight, calculator, compass, notepad, phone (for calling) and as a gaming platform.

There has always been this controversial issue of radiation produced by these phones -- do they produce so much radiation so much so that they cause harm to the human body? Many smartphone manufacturers has avoided answering this question, and if anyone forcefully asks, they always bring out the same old excuse,”If radiation from our smartphones are harmful, everyone would have cancer on their right thigh by now.”

So what we aim to do for our project is to investigate whether it is likely that our everyday smartphones are bringing more harm than good onto us. We have decided to tackle this controversial question by putting it to the test ourselves -- we want to see for ourselves first-hand what kind of impact does the radiation of the smartphone does to our very own body, if it even does anything at all.

To do this, we created detailed procedure on creating the circuit for the antenna, and which terminals of the antenna to join to the voltage sensor(which basically indirectly collects frequency too). We used a voltage sensor and borrowed phones from our fellow peers. We have tested out the phones using a 30cm wire, connected to a breadboard and recorded the graph drawing a conclusion based on the data we collected.  We then managed to successfully collect a set of data that is related to the GSM radiation produced by the phones, which is the frequency and intensity released by the phones. Although there were some tests in which the intensity/frequency was inconsistent/fluctuating, we still got data from most of the phones.

Our results show that there is generally a high level of radiation during the first few seconds of the call, but radiation levels gradually went to a normal amount after the call ends. Samsung Galaxy S3 had the highest intensity of radiation produced,which was 10 volts followed by Samsung Trend 3 and lastly, iPhone 5S. Actually, we did not manage to detect any form of radiation from iPhone 5S, and we suspect this was due to the fact that that phone released a wavelength of radiation different from which the antenna could collect.We were quite happy to say that we made some new findings that is not really what the public think it might be, and hope that consumers can make better informed decisions when they are selecting their new phones.

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