1*#06#: Query IMEI number, common to all mobile phones. *#7370#: Format mobile phone, dedicated to Serie S60 mobile phone. *#7780#: Restore factory settings, applicable to Serie S60 and Series 40 phones. *#0000#: Query the current software version number, common to all mobile phones. *#7760#: Query the production line number only for Serie S40 mobile phones. *#2820# Check the Bluetooth device address for Serie S60 and Serie S40 mobile phones. *3370#: Available for some models of mobile phones with EFR activated. #3370#: Turning off EFR is available on some mobile phone models. *4720#: Available for some models of mobile phones with HFR activated. #4720# Turning off HFR is available on some mobile phone models. *#92702689#: Query the total call time is limited to 6630. *#927026 89#: Enter data mode, exclusive for Serie S40 mobile phones. *#7370925538#: Exclusively for mobile phone locking Serie S60 mobile phones. Netizen's addendum: The CDMA model enters the engineering mode *3001#123 45#; 1. *#06#: Displays the IMEI code. 2. *#0000#: Display the software version (if it does not work for some models, you can press *# model code#, such as *#6110#). The first line - software version; the second line - software release date; the third line - mobile phone model. 3. *#92702689#: Display serial number and IMEI code, with scrolling menu. The first screen shows - the factory date of the mobile phone: 1197 (month, month, year, year); the second screen shows - serial number and IMEI;The third screen shows - Purchase time: 1197 (month, month, year, year) can be changed once but once entered, it cannot be changed again, the date will be permanently recorded) The fourth screen shows - Last repair time: 0000 (month, month, year, year) Set during maintenance. Fifth screen says - Transferring User Data: Exit to turn off the phone and then return. If the above does not work properly and the phone asks you to enter a valid code, try: 1).6232 (OK): Displays the month and year of manufacture. 2).7832 (OK): Display the month and year of the phone purchase time. 3).7332 (OK): Display the month and year of the latest maintenance time: 0000 (month, month, year, year) is set during maintenance. 4).9268 (OK): Display the serial number. 5).37832 (OK): Set the month and year of the purchase time (warning: only allowed to be done once). 6).87267 (OK): Confirm transfer, related to software updates. 4. Rate coding. *3370# or *efr#: Enable (EFR) full rate encoding. #3370# or #efr#: Turn off full-rate encoding (enable full-rate enhanced encoding mode, which can improve voice quality but consume power). *4720# or *hra0#: Enable (HR) half-rate encoding. #4720# or #hra0#: Turn off half-rate encoding (the voice quality is reduced, but the battery life can be extended by about 30 seconds, network support is required). After typing these codes, the computer will be turned off and on again before they can take effect.5. SIM card lock information. *#7 46025625#(=*#sim0clock#): If the SIM card can be locked, after typing this command during detection, the phone will display \SIM CLOCK STOPALLOWED\ or \SIM CLOCKSTOP NOTALLOWED\, depending on your SIM card. SIM card lock information: including four different locks 1). Country lock - lock the specified country. 2).Network lock--Lock the specified network. 3). Supplier lock - lock service provider. 4).SIM card lock - lock the specified SIM card. 6. To check whether the phone is locked, you must first find out the keys that must be used when setting up the phone. Among them, if you press the * key twice continuously, \+\ will appear; if you press the * key three times, \p\ will appear; if you press the * key four times, w\ will appear. Then, you can enter the corresponding key combinations in sequence. #pw+1234567890+1#: Check whether the country code is locked #pw+1234567890+2#: Check whether the network code is locked #pw+1234567890+3 #: Check whether the network provider lock code is locked #pw+1234567890+4#: Check whether the SIM card is locked. 7. Power button. Touch the power button, and the screen will display a menu of scene modes. You can quickly switch between various modes through the up and down keys. Turn on the screen light in keyboard lock mode. Have you ever felt the trouble of trying to open the keyboard lock of your phone in the dark at night?In fact, you can tap the power button, and the night light of the screen and keyboard will turn on, so that you can easily distinguish the keys to open the keyboard lock....
