1. Factory date query method:

Enter dial input *#197328640# to enter the engineering mode;

Click the menu button and then click Key Input to enter the value 2;

Click the menu key again and click Key Input to enter the value 2;

Click the menu key again and click Key Input to enter the value 4;

You can see the cal date: Displays the date of manufacture.

2. Look at the call time:

*#*#4636#*#* This is to look at the call time, it is normal if it is within 1 minute (one minute is not considered normal , can be used to speculate whether it is a repaired machine or the like)

3. Test whether there are three lock keys:

Volume down button + HOME button + power button, if a robot appears The animation of coal mining means that the three keys are unlocked, and vice versa.

4. Test whether there is a network lock

*#7465625# This is to see if the machine is locked. If it is OFF, it is normal. If the value of the second item "network lock" is "disable", it means there is no network lock, and if the value is "enable", it means there is a lock.

Another method is to check the version: *#1234#, if it displays: PDA:I900DZHG1/DZHG1

Mobile phone: Samsung i9100NSPRO must be locked.

5. Identify the country of origin of the machine

In standby mode, click the dial button

Enter: *#1546792*#, then enter the engineering mode, select Preconfiguration and you will be prompted to enter Password, enter: *#81230*# and confirm,

If JS has not changed the "select a counrty" column, it is the origin of your machine. From this, you can tell whether it is the Hong Kong version or the European version. version or Asia-Pacific version. After checking, mine is from Singapore. [color=****

6. Screen test:

*#0*# A must-have when purchasing a machine for engineering testing Test

Three primary color tests in the first row

Second row 1 sound 2 vibration 3 brightness reduction

Third row 1 camera 2 magnetic sensor 3 touch screen< /p>

The fourth line 1 sleep mode 2 gravity sensor

There is "LCD TEST" inside, press "RED" to display red in full screen, press "green" to display green in full screen, press "blue" to display Blue. If you want to return to the test menu, please press the confirmation key in the middle. To exit, press the hang-up key.

7.IMEI code verification:

Enter *#06#, check the IMEI code in the phone memory, remember this number, and then enter *2767*3855# to perform i900 chipping After reset, the phone will automatically restart.

Finally enter *#06# to check whether the IMEI code has changed. If this number is consistent with the IMEI code on the back of the phone or the outer packaging box, and the model is approved If the number is consistent with the model of the mobile phone,

it proves that it is an authentic product from the original manufacturer. If it is inconsistent, or turns into a string of garbled characters, it proves that the phone is either a modified machine or a refurbished machine. If the command is not executed, it means that the chip reset function has been blocked by

JS. Remember: this operation is equivalent to hard restarting the phone.

8. Other aspects

Appearance, front and rear cameras, battery, touch screen and other inspections do not have much technical content, so I will not describe them one by one. .

I hope this article will be helpful to friends who want to buy a machine.

Note: Samsung i9000 purchase identification, refurbished and inspection guide

Purchase inspection:

1. Carefully look at the screen for marks and data Check whether there is dust on the cable, headphone hole, speaker hole, and strap hole

2. Look carefully at the battery lock of the fuselage to see if there are any scratches, and whether there are any rotation marks on the rotating shafts of the upper and lower covers

4. Smell the smell, the new machine has sandalwood, which dissipates 10-12 days after purchase, this smell is different The smell of general detergents and perfumes. There should be no sticky wax or oil on the body (if there is any, it has been beautified by the merchant)

5. Carefully check the SIM card contact points and the battery contact points of the body Are there any wear marks

6. Check whether the gaps at the seams of the shell are even and below 1MM, whether there are pry marks, and whether there are pick marks at the two sealing points under the screen inside the upper cover

7. Compare the elasticity of the buttons and the brightness of the internal and external displays with the new machine

8. Check carefully whether the fixing nails of the fuselage are rotated, painted and inked (you can use a magnifying glass), and whether the trademark is No prying marks

9. Look at the scratches on the film. The new machine is all one-piece lamination. There will be absolutely no bubbles in the original film, and the machine has no scratches

10. Look at the scene. The date, purchase time and production date generally do not differ by 2 months. If the difference is too large, it is suspected to be refurbished.

Inquiry of production date:

Enter *# on the phone dialing interface. 0228# Then press BACK, then press BACK again and select 2 (open the input method and enter the number 2, and so on) VERSIon INFORMATIon

Select 2 HW-VERFR-CAL-DATE and then select 4 READ CALDATE My check The last appearance date is: 2010 09 25, and the purchase date is early March. It should not be a refurbished or second-hand phone.

11. Check whether the phone version has words other than version. This type of machine has a phone lock. Unable to flash the machine. Generally speaking, some European and American customized machines have network locks, such as O version, T-MOBILE version, normal European version, Hong Kong version, and Asia-Pacific version. Want to know whether I9100 has a network lock? It is as simple as the following:

Engineering mode: *#7465625#, if the value of the second item "network lock" is "disable", it means there is no network lock, and the value is "enable", it means there is a lock.

Another method is to check the version: *#1234#, if it displays:

PDA:I900DZHG1/DZHG1

Mobile phone: Samsung i9100NSPRO must be locked .

12. Identify the country of origin of the machine

In standby mode, click the dial button to enter *#1546792*# and then enter the engineering mode and select Preconfiguration

At this time, you will be prompted to enter the password, enter *#81230*# and confirm

If JS has not changed the "select acounrty" column, it is the origin of your machine. From this, you can identify the Hong Kong version Is it the European version or the Asia-Pacific version? After checking, mine is from Singapore. [color=****

There is also a visual inspection. Look at the "SAMSUNG" on the back of the machine. If it is incised, it is usually from To Europe, Yangke, then to Hong Kong.

13. Use the built-in picture of the machine to carefully check the highlights. If you want to know how the screen of your I9100 is and whether there are any dead pixels, enter *#0*# in the phone status and there will be "LCD TEST" in it. , Press "RED" to display red in full screen, press "green" to display green in full screen, and press "blue" to display blue. If you want to return to the test menu, press the confirmation key in the middle and press the hang-up key to exit.

14.IMEI code verification

Enter *#06# to check the IMEI code in the phone memory, remember this number, and then enter *2767*3855# to reset the i900 chip , the phone will automatically restart, and finally enter * to check whether the IMEI code has changed. If this number is consistent with the IMEI code on the back of the phone or the outer packaging box, and the model approval number is consistent with the phone model, it proves that it is the original manufacturer. Authentic goods.

If it is inconsistent, or turns into a string of garbled characters, it proves that the phone is either a modified machine or a refurbished machine. 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 restarting the mobile phone.

15. Supplementary solution

You can check the origin, sales direction and production date of parallel-imported mobile phones. You can also check whether your machine is It is not an authentic water machine!

Method 1: Friends who cannot understand English can use it with the translation website. After entering, click Number analysis tools on the left and then click IMEI number in the middle

analysis Okay, enter the IMEI serial number on the back of your phone to check it!