Why in one hand smartphone it is better than the other

The scientists tested how well different smartphones receive radio signals and how to place the gadget in order to improve communication. Spoiler: if you iPhone, while talking hold of his right hand on the right ear.

For most ordinary users smartphones - these black boxes that function as if by magic. But the principle of operation is quite simple: the smartphone catches and sends invisible signals, thereby allowing you to surf the internet and stay in touch with family and friends. In the production of the device within the housing is installed an antenna that receives radio.

Due to the fact that today all the antennas mounted inside smartphones, their efficiency is reduced. Device owners have no idea where in devaysa placed antenna, and may inadvertently override her hand. In the store you would hardly be told this information, because every manufacturer puts the antenna where it sees fit. As a result, the way you hold the smartphone and which side can significantly affect the antenna performance and communication in general.

To test the efficiency of different phones, scientists from the University of Aalborg in Denmark put various smart phones in a specially designed chamber for testing, to measure the level of signal. The result was a study report, Commissioned by the Nordic Council of Ministers.

Your phone receives and transmits a signal that receives from the mobile station. The most logical way to measure the quality of voice calls - to determine how well the phone is able to send signal to the nearest cell tower, as is usually the signal - the weakest link in a telephone conversation.

In the chart below you will see the figures obtained from the test. Members kept smartphones popular brands in the right and left arm during a call at 900 MHz (this is the most common frequency for making calls in most of the world). The stronger the signal, the better the phone transmits it during the conversation and, consequently, the higher the quality of the call as a whole.

As you can see, iPhone shown not the best quality of the calls, which would hand the user may be located (especially older models). But when you hold them in your left hand and apply to the left ear, the smartphone starts to work much worse. This can be explained only two reasons in this arrangement barrier between the antenna and the wireless signal becomes larger than the antenna or iPhone worse than other smartphones.

The second part of the experiment - testing the quality of data transmission services. For this purpose, the lowest measured rate of power transmitted from the cellular communication towers to the telephone signal which is required to view the data through the Internet.

The lower power signal you want to send the smartphone, the better it does its job. That which hand you hold it, it does not matter.

But even in this part of the experiment, most iPhone models were less efficient than its competitors. The full report and details on other phone models can be viewed here.

If you use your smartphone in areas where signal strength is strong enough, of course, you will not notice the difference. But it may not be in small towns, on the road, on the nature of good conditions. Therefore, if you notice that the call quality is poor, take the phone to his other hand. And even better - to enable speakerphone.