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Half of 2017 has passed in an instant, and the annual flagships of various mobile phone manufacturers have been available for a long time
.
Looking at a lot of mobile phones equipped with the latest chip Snapdragon 835, do you feel itchy and want to get one quickly? However, looking at Apple and Samsung's domestically produced mobile phones, which are priced at five or six thousand at every turn and the collective crazy price increase, I have to calm down and consider carefully
At this time, for many people who dare to eat crabs, buying a second-hand mobile phone is obviously the most affordable way
.
Just go to those second-hand trading forums and you will find a lot of second-hand mobile phones sold by local tyrants who consume impulsively or are tired of playing.
After all, different from official channels or regular stores, second-hand mobile phones purchased from private hands are relatively more risky in terms of quality assurance
.
Therefore, this requires us to learn some necessary inspection techniques to prevent the purchase of phones with dark diseases from some dishonest sellers
To determine whether a second mobile phone is worth the price marked by the seller, in addition to checking whether there are bumps around the fuselage and whether the screen is scratched, the most important thing is to check whether the mobile phone has been disassembled and repaired: you can use the phone dial interface Enter *#06# to view the IMEI code of the mobile phone, and then check the repair records on the official website of the mobile phone brand
.
Can the transaction be completed after verifying the repair record? Don't worry, let's find out if there is any dark disease
.
There is a word on these second-hand trading websites called "Keng Chu", which means to conceal the "condition" of the mobile phone and sell it to buyers
If you want to enter the engineering mode of the mobile phone, there is not a unified input code like the mobile phone IMEI code search above
.
Although Android phones use the underlying technology of Android, various manufacturers have added in-depth customization, that is, the so-called third-party OS (such as Flyme, MIUI, Color OS, etc.
Well, the paving is complete, and the high energy is coming
.
The following is a summary of the editor’s summary of the mobile phones of various brands entering the engineering mode
Enter the code
.
(Enter through the dial interface)
Sony: *#*#7378423#*#*
HTC: *#*#3424#*#*
Samsung: *#0*#
LG: 3485#*Mobile phone model#
Moto: *#*#372#*#*
Meizu: *#*#3646633#*#*
OnePlus: *#36446337#
Xiaomi: *#*#6484#*#* or *#*#64663#*#*
ZTE: *983*3640#
Huawei: *#*#121314#*#*
Coolpad: *20060606#
Lenovo: ####1111#
OPPO: *#36446337#
VIVO: *#558#
ZUK: *#*#1111#*#*
360: *20121220#
LeTV: *#*#3646633#*#*
Nubia: *#8604#
(The above rankings are in no particular order, fans should not tear it apart
.
)
After entering the engineering mode, we can see various test items as long as we select the engineering test
.
The following is the engineering mode interface of OPPO mobile phone
Mi mobile phone engineering mode interface
You can perform simple tests on some commonly used functions according to your needs.
Of course, Virgo can leave any of them, and it is not a bad idea to have a comprehensive cleaning
.
With these mysterious codes, will you feel more confident next time you search for second-hand mobile phones?
