This article provides practical skills required for purchase of Samsung note2, and introduces in detail how to purchase Samsung note2 without being killed by JS. For more Android mobile phone system brushing tutorials, please pay attention to Android novice tutorial station.
1. Query method of ex factory date:
The first method: enter dial input * # 197328640 # enter engineering mode; Select the second item, the second item and the fourth item in sequence, click the menu key, and then click Key Input to enter the value 2; Click the menu key again, and then click the Key Input input value 2; Click the menu key again, and then click the Key Input input value 4; You can see that cal date: displays the factory date.
The second method: s/n calculation. The fourth and fifth digits of s/n are year and month, the fourth digit is C for 2012, and the fifth digit is 123456789abc for January December (the normal cal time and sn time should be in the same month) * # 12580 * 369#
2. Check the call time:
*#*#4636
3. Test whether there are three keys for locking and the number of times of machine brushing:
The volume down key+HOME key+power key, if the robot coal digging animation can appear, it is no lock three keys, otherwise it is lock three keys. Just shut down>press the power key+the volume down key+the middle HOME key, wait for the machine brushing mode to appear, and then press the volume up key to check the data, it will show whether the machine has been brushed. If the machine has not been brushed, the third line will write NO, if the machine has been brushed, It will write YES and the number of strokes. After the inspection, press the power key for ten seconds to exit the mode
4. Test whether there is a network lock
*#7465625 # It depends on whether the machine lock is normal as long as it is OFF. If the "networklock" value is "disable", it means no network lock, and if the value is "enable", it means there is a lock.
Another method is to check the version: * # 1234 #. If the display shows: PDA: I900DZHG1/DZHG1 mobile phone: NSPRO must be locked
5. Identify the origin of the machine
The first method: in standby mode, click the dial key to enter: * # 1546792 * #, then enter the engineering mode, select Preconfiguration, you will be prompted to enter the password, enter: * # 81230
Asia Pacific Edition
If the first method doesn't respond, it can't be used. You can try the following method
The second method: enter the dialing interface, and you should know that IMEI can be found by entering * # 06 #. Then immediately check whether the box bar code is the same as the IMEI of the machine body. Enter * # 272 * [IMEI] #, and three letters will appear. This is the place of sale, for example, TGY, which represents Hong Kong (this command can switch the location attribute of the machine, so switch carefully)
6. Screen detection:
*#0 * # project test must be tested
Three primary color tests in the first line
The second line 1 earpiece 2 vibration 3 brightness decreases
The third line 1 Photograph 2 Magnetic sensor 3 Touch screen
Line 4 1 Sleep mode 2 Speaker 3 Accessory keys
There is "LCD TEST" in the 2 led indicator lights of the first front camera in the fifth line. Press "RED" to display red in full screen, press "green" to display green in full screen, and press "blue" to display blue. To return to the test menu, press the confirmation key in the middle, exit and press the hang up key.
7. IMEI code inspection:
Enter * # 06 #, check the IMEI code in the phone's memory, remember the number, and then enter * 2767 * 3855 # to reset the i9300 chip. The phone will automatically restart,
Finally, enter * # 06 # to check whether the IMEI code has changed. If the number is consistent with the IMEI code on the back of the mobile phone and the external packaging box, and the model approval number is consistent with the mobile phone model, it is the original product. If it is inconsistent or becomes a string of garbled codes, it indicates that the mobile phone is either a water conversion or a refurbishment. If the instruction is not executed, the chip reset function has been blocked by JS. Remember: This operation is equivalent to hard starting the phone and making a backup
8. Other aspects
The appearance, front and rear cameras, batteries, touch screen, etc. didn't have much technical content, so I won't describe them one by one.
I hope this article will be helpful to the friends who buy the machine.
Purchase inspection:
1. Look carefully to see if there is any mark in the screen, and if there is dust in the data cable, headphone hole, speaker hole, and strap hole
2. Carefully check whether there is any scratch on the battery lock of the body and whether there is any spin mark on the rotating shaft of the upper and lower covers
3. Carefully check whether there is any record in the WAP and voice functions and call record information functions
4. Smell the smell. The new machine has sandalwood, which dissipates 10-12 days after purchase. This smell is different from that of ordinary cleansers and perfumes. There should be no sticky wax and oil on the machine body (sometimes it is beautified by merchants)
5. Carefully check the SIM card contact point and the battery contact point for wear marks
6. Check whether the gap between the joints of the shell is even and below 1mm, whether there is pry mark, and whether there is pick mark at the two sealing points under the screen inside the upper cover
7. Compared with the new machine, the elasticity of keys and the brightness of internal and external displays
8. Carefully check whether the fixed gong nail of the machine body has rotary printing, painting and inking (magnifying glass can be used), and whether the trademark has prying marks
9. Look at the scratch film. The new machine is integrated with the press film. There is absolutely no bubble in the original film #, and the machine has no scratch
10. Judging from the appearance date, there is generally no difference of two months between the purchase time and the appearance date. If the difference is too large, it is suspected that it is a renovation
