What to look out for when buying a mobile phone

1. Appearance check whether the packaging box is damaged, whether the appearance of the mobile phone is cracked or scratched,mobile latest news ， it is best to check it in a well-lit environment.


2. Screen to check whether the mobile phone screen has dead pixels, bright spots, dark spots, screen light leakage, yin and yang screens, green screens, etc. The probability of screen problems is the greatest, so it is recommended to focus on testing.


3. Speaker and earpiece, you can play music to test the speaker, and make a call to test the earpiece. Finally, plug in the original earphones to make calls and listen to music to see if there is any problem, and try the central control button by the way.


4. Camera measurement The camera only needs to use the front and rear cameras to take a few photos, and the photo object should be as simple as possible, such as a white wall. In this way, you can detect whether there are black spots or dust on the lens.


5. If you measure the signal, start with the call signal and the network signal. The call signal is very simple. Make a call to see if the call quality is stable. Signal is also a big frequency problem.



like：


How to know the quality of screen accessories:

How to identify the quality of the replacement screen? 

Can go to a third-party repair shop to repair my phone? 

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