Inquiry method of factory date
Enter the dial-up input *# 197328640# and enter the engineering mode;
Click the menu key, and then click Enter to enter the value 2;
Then click the menu key to enter the value 2;
Then click the menu key to enter the value of 4;
You can see the calibration date: it shows the production date.
I. Procurement and Inspection of Machines
1, look carefully at the screen for marks; Whether there is dust on the data cable, earphone hole, speaker hole, hanging hole, etc.
2. Look carefully at whether there are dial marks at the battery lock of the fuselage and whether there are rotation marks at the rotating shaft of the upper and lower covers.
3. Carefully check whether there are records in WAP, voice function and call record information function.
4, smell, the new machine has a special sandalwood smell, which will not dissipate in a short time after purchase. This smell is different from ordinary detergent and perfume, and it is also different from the smell of plastic or chemicals (PS: check the fuselage carefully to see if there is wax and oil stains, and the nails are slightly scratched. If there is, it is beautified by the merchants).
5. Carefully check the contact point between the SIM card and the battery of the fuselage to see if there are any wear marks and whether the new machine has frosted light.
6. Check whether the gap at the joint of the shell is even and small, whether there are pry marks, and whether there are pry marks at the two sealing points under the screen in the upper cover.
7. The buttons of the new machine are very elastic, and the feedback of the physical keys is very strong, but the left volume button is only slightly loose or not.
8. Carefully look at whether there are rotary printing, friction marks, paint and ink (magnifying glass can be used) on the fixed gong nail of the fuselage, and whether there are pry marks and scratches on the trademark.
9. See if there are any scratches on the film. The new machines are all laminated, and there will never be bubbles in the original film. Although JS's film technology may be very high, it must be checked.
10, the overall appearance is coordinated, and the shell is bright without any scratches.
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Second, the factory date query method
Enter the dial-up input *# 197328640# and enter the engineering mode;
Click the menu key, and then click Enter to enter the value 2;
Then click the menu key to enter the value 2;
Then click the menu key to enter the value of 4;
You can see the calibration date: it shows the production date.
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Third, look at the call time.
Enter the dial input * # * # 4636 # * * to see if the call time is extremely short. Theoretically, it shouldn't.
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Fourth, test whether to lock three keys.
1, press the HOM key under the volume, and the animation of robot coal mining can appear.
2. Press the volume button to enter the recovery mode.
The above appear at the same time, that is, three keys to unlock.
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Verb (short for verb) tests whether there is a network lock.
1, enter the dial-up input *#7465625# to see if the machine is locked, and it is all closed normally.
If the second "Network Lock" value is "Disabled", it means there is no network lock, and the value is "Enabled", which means there is a lock.
2. Check the version and enter *# 1234#. If it is displayed as PDA: I 900dzhg1/dzhg1.
Mobile phone: Samsung i9000NSPRO, it fell and locked.
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Sixth, identify the origin of the mobile phone.
Enter the dialing input: *# 1546792*#, then enter the engineering mode and select the pre-configuration. At this time, you will be prompted to enter the password, enter: *#8 1230*#, and then confirm that if JS does not change the "Select a country" column, the origin of the mobile phone will be displayed, so that you can distinguish between the Hong Kong version and the European version.
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Seven, screen detection:
Enter the dial-up input *#0*#, engineering test, buy the machine will test:
The first line of the tricolor test
The second line 1 sound 2 vibration 3 brightness drops.
Third Row 1 Camera 2 Magnetic Sensor 3 Touch Screen
Line 4 1 Sleep Mode 2 Gravity Sensing
There is a "liquid crystal test" in it. Press "Red" to display red, press "Green" to display green and press "Blue" to display blue. If you want to return to the test menu, please press the confirmation key in the middle and the hang-up key to exit.
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Eight, IMEI code test
Enter the dialing number *#06#, check the IMEI code of the mobile phone, write down the number, and then enter *2767*3855# to reset the i9000 chip, and the mobile phone will automatically restart. It doesn't matter if the new machine is reset
Then dial *#06# to see if this IMEI code has changed. If this number is posted on the back of the mobile phone (sometimes the IMEI code on the outer packaging box is consistent, sometimes it is inconsistent, and the outer packaging changes greatly, so it is a parallel product), it will prove to be the original product. If it is inconsistent, or becomes a string of garbled codes, it proves that there is something wrong with the mobile phone, and it will pass.
PS: If the instruction is not executed, it means that the chip reset function has been blocked by JS. Remember, this operation is equivalent to hard starting the mobile phone, but it doesn't matter whether it is brand new or not.