Buying an old phone is always a cost-effective choice. However, to avoid "losing money and getting sick", users need to carefully check the hardware condition before buying. Fortunately, there are many free applications that support comprehensive testing of components such as screens, batteries, sensors, cameras or speakers on mobile devices.
Specialized hardware testing applications will help non-professional users detect errors more quickly and accurately than just manual testing.
1. Phone Doctor Plus
With an intuitive, easy-to-use interface, this application provides more than 30 hardware tests such as testing touchs, speakers, microphones, access sensors, cameras, charging ports, etc. The application provides a comprehensive diagnosis for users to grasp the device's status.
2. CPU-Z
Not only does it support processing CPU, RAM, internal storage, CPU-Z also provides detailed information about the sensor, temperature, and power consumption of each part. This is a popular application among phone repair technicians.
3. AccuBattery
Dedicated to assessing the battery status, AccuBattery measures actual charging level, energy consumption speed, actual battery life and charging cycle. The collected data can help determine whether the battery is bottled or not.
4. TestM hardware
This is a multi-platform application with more than 20 hardware tests, from cameras, sensors to vibration and GPS. The big advantage is the ability to issue PDF technical reports which is helpful when you need proof to the seller.
5. Device Info HW
The application displays detailed information about the hardware such as screens, processors, batteries, sensors, audio modules and even cameras. easy-to-understand interface, suitable for general users.
Before deciding to buy an old machine, use at least two different testing tools to compare the results. This helps minimize the risk of purchasing equipment that has had components replaced or underutilized repairs.
Using hardware testing applications helps consumers protect themselves from the risky secondhand phone market, while avoiding buying poor quality devices at high prices.
