How to see if the phone has been dismantled?

Technology: Teach you to detect whether the iPhone has been disassembled.

Listen to the person who repairs the mobile phone, and see if the screws behind the mobile phone have been removed.

Trouble, thanks!

Listen to the person who repairs the mobile phone, and see if the screws behind the mobile phone have been removed.

You can tell if a new phone is brand new and unopened by using the following methods:

1. Check whether there are fingerprints or traces of movement on the mobile phone and various accessories;

2. Check whether the plastic cover of the mobile phone has been removed (usually there will be wrinkles or changes in the position of the sticky when removed);

3. Check whether the phone has been turned on (e.g., there are non-examples in the album**, some settings have been set).

Tools Materials.

A second-hand mobile phone.

Here's how. <>

3. Press the top of the mobile phone screen with your finger, if there is a slight upturn, it means that the screen of the mobile phone has been disassembled.

4. You can test the performance of the mobile phone, including taking pictures, sound, etc.

Hello, I'm glad to answer your question According to your question, I will help you inquire: If you bought it online, after receiving the express delivery, you should first call the courier brother, unpack it in front of him, and confirm that the appearance of the mobile phone is not worn out due to transportation, because some sellers may be particularly simple when they ship the packaging, and the mobile phone will be violently damaged during the express transportation! Double-check that if it's okay, let's get started:

1. Check the overall appearance of the mobile phone first to check whether there are scratches and wear on the appearance of the mobile phone, and whether the screws at the bottom of the mobile phone have been twisted, especially the gaps in the mobile phone shell. 2. Check the mobile phone screen and open multiple solid colors with the mobile phone**, pure white, pure black, pure yellow, etc., adjust the brightness to the highest, and check whether there is dust or dead pixels in the mobile phone screen, because some mobile phone repair environments may not be dust-free environments, and you can also judge whether there is a record of dismantling and repair. In addition, pay attention to whether the screen has signs of aging and yellowing, take a closer look at the top status bar, many mobile phones start to age and darken and yellow from the top.

3. Check the serial number of the mobile phone and log in to the official website of Apple to check the serial number of your mobile phone, you can see the effective purchase date, technical support, repair and service warranty and other information, and carefully check whether the information corresponds to the machine. 4. Check the signal and call situation and install the mobile phone card, first use the mobile phone to conduct text messages, calls, and mobile data traffic Internet tests, call friends or family members, send a few text messages, and see if you can talk normally, whether you can use the data Internet function normally, one is to check the mobile phone signal, and the other is to check whether the earpiece and microphone are normal. Then connect to the wifi to see if the signal is weak or if the Internet is delayed for too long.

5. Check the front and rear cameras to check whether the front and rear camera imaging is relatively clear, the video recording function is abnormal, can you focus, some machine focus motor is broken, can not focus, do not carefully check is likely to ignore! 6.Check that the sensor turns off the phone's lock screen rotation, then turn on a ** and turn the phone sideways to see if the screen will follow sideways.

Then open the compass of the mobile phone with the app, swipe left, turn on the horizontal gyroscope, put the mobile phone on the flat desktop, and see if the degree is near 0, and it is normal to have a small deviation. 7.Remove the back cover and check the motherboard (this step is recommended for experienced people to do!)

If you really don't feel at ease, you can disassemble the back cover to check, check the motherboard, battery, cable, etc., whether there are traces of maintenance, or traces of water ingress, if you have a certain understanding of Apple device accessories, you can also check whether the relevant accessories have been replaced, however, it is strongly stated that this one requires certain maintenance technology, and it will not be dismantled or not disassembled! The above is the relevant information for the pro inquiry, I hope mine can help you! begging