We check in former Android-use gadget before buying

The rapid change in the dollar led to a significant reformatting sales mobile gadgets. Today it is much more difficult to buy a new smartphone with decent specifications, so more and more people postpone the purchase until later or purchase second-hand devices. However, when buying a hand there is always a risk to buy the device to malfunction or manufacturing defects. In this article you will find all the necessary tools that will help you avoid trouble when buying a second-hand phone or tablet running Android.

How to check the screen for the presence of dead pixels and other problems

Screen gadget is one of the most vulnerable parts. Determine the presence of cracks, chips, abrasions and other physical damage, you can use a careful visual inspection. But for the detection of defective pixels and problems with tachem have to use special programs.

Display Tester

With this program you can find a variety of problems with the mobile device screen, including dead pixels or traces gadget in liquids which are identified only by a special test. In addition, the program will provide you with much more information about your display, than you will be able to find even in the unfolded data sheet.

MultiTouch Tester

This program is well known and used by all the testers of mobile gadgets. It simply and clearly show you how many multi-touch touchpad supports your device. Particular attention should be paid to this parameter in case you want to check to see whether you are trying to sell a cheap imitation of the kind of branded devices.

Yet Another MultiTouch Test

A much more powerful tool to check the sensor operation, which allows not only to learn the number of simultaneously recognizable touch, but also to identify "dead" touchscreen areas, if any, available. To do this, the program has a Paint Tester mode, which allows you to draw on the screen. Just picture a grid on the screen and immediately see whether all its zones have the same sensitivity.

How to test the Wi-Fi

Today quite often come across Soup, designers who in the quest for a spectacular appearance gadget neglect the mandatory requirements for the layout elements. For example, the antenna shield wireless module beautiful metallic edging, resulting in a phone or tablet can only operate in the vicinity of the router.

wifi Analyzer

Wifi Analyzer enables you to evaluate how your smartphone or tablet can "see" a wireless network and how well assembled and configured the appropriate device path. In addition, at the same time you will be able to find a free channel and determine in his home area in which the signal reception of surest.

How do you know the speed and accuracy of the GPS system

One of the most common problems that you may encounter after the purchase of used gadget - it's slow when determining your location. Accurate and rapid determination of your position depends on many parameters, including the used chip version of Android, and even firmware structure of the country of production. Therefore, we recommend that you pay particular attention to this aspect when buying.

GPS Test

The main program for the GPS test, which must be installed on every smartphone. It will allow you to determine the time and the number of satellites from which the device will be able to establish a connection, precision positioning, the ability to work with different systems geopositioning stability satellites capture and other important options.

AndroiTS GPS Test

A worthy competitor to the previous program, which has a roughly similar features. In addition to testing all the smartphone operating parameters with satellite geopositioning systems, it can be used as a conventional tracker, because it has the function of recording your movements and is able to work not only with maps GoogleMaps, but OpenStreetMap, BingMap and "Yandex. Cards. "

How to determine the serviceability of a microphone, accelerometer, proximity sensors and light

Modern mobile gadgets acquire every year more and more extensive range of detectors and sensors. Some of them are used only in certain situations or necessary for certain programs, so their failure or lack of it can throw inattentive buyer in the eye is not immediately. For a complete check of all sensor device has a number of special integrated programs.

Sensor List

This program displays a list of all the sensors, which are available on the device, as well as timetables for their values ​​in real time. You can check the operation of the accelerometer, magnetic field sensors, orientation, temperature, light, and so on, tracking changes in the incoming signal from which changes depending on the external conditions. In recent versions it was added support for checking battery status (temperature, voltage and charge rate). Sensor List is ideal for demonstrating the capabilities of your new phone, as well as diagnostic equipment after the update or restore the system.

Sensor Box for Android

If the graphics of the previous program you seemed too boring and incomprehensible, the Sensor Box for Android will help you test your gadget sensors more intuitive way. In fact, we have a collection of small utilities, each designed to test one of the properties of the mobile device. For example, when checking the gyro offers to roll the ball across the screen orientation sensor is tested virtual layer, and the action is demonstrated on the light sensor on the indoor painted screen plant.

Elixir 2

This is a real test laboratory for smartphones and tablets running Android. It will help you gather the most comprehensive information available on the device and the sensors are operating properly. In addition, here you will find complete information about running processes, installed applications, operating system, shared libraries, and more.

The main feature of the app is the ability to create widgets for the desktop, the ability to show change the options you want in real time. A complete list of all Elixir 2 possibilities would require a separate large articles, so we recommend to all users who need more detailed information on the mobile device, be sure to pay attention to this program.

Of course, the best helpers when buying a hand of used gadget is your attention and savvy. Resist the temptation and remember that things cost too cheap are usually too expensive later. We hope that given in this review of the program will help you avoid mistakes and be convinced of the justification of their choice.