What are the system files of Nokia 6220c used for?

First, the operating system file structure analysis

The mobile phone has four drive letters, which can be seen by opening it with a file management program. They are c, d, e and z.

Drive c,

Just like the C drive of Windows, it is used to place Symbian OS, so we need to reserve enough space for the operating system (such as storing temporary files generated when the software runs). For the machine that has expanded the MMC card, it is recommended to install application software and games on the MMC card as much as possible.

Note: There is no direct relationship between the remaining space of drive C and the memory of the mobile phone. The extreme example is that the C disk is full of mobile phones and can still run. The memory of a mobile phone is related to the software in which the memory resides, such as input method and theme background. When the phone is turned on, the memory will reside, and the running software and games will also occupy the memory. The way to increase dynamic memory is to reduce memory resident programs. With the task management software AppMan, it is convenient to check the memory status and close the process to release the memory.

D disk,

It's a floppy disk that users can't control. Except for the three directories generated by the system, the files and directories created by users will disappear after the phone is restarted.

E disk,

Mini flash cards can be used to install software, games, mp3, video files and so on. After the new MINI card is formatted with a mobile phone, several default system directories will be automatically generated, some of which have implicit properties and can be viewed on the computer with a card reader (hide folders by looking at the year and open the "Show all files and folders" option of the file manager in the computer).

Z disk,

It is the solidified system disk of the mobile phone, which is also beyond the control of the user. When formatting the mobile phone, the system is restored, that is, it is automatically restored from the Z disk. Brush upgrade is to upgrade the system files of the disk by brush. Equivalent to the system backup recovery disk on the computer.

1, the file structure on drive C.

C:/system/data/applications.dat/backup files are arranged in the order of menu, folder and software icon.

C:/system/data/alarmserver.ini/alarm clock setting file;

C:/system/data/GSM _ installation, operation and setup files of identity.qxc/Smart Cinema SmartMoviev V.

C:/system/data/IP _ config _ installation, operation and setup files of x2.sys/Smart Cinema SmartMoviev V.

C:/system/data/stacksrv05.db/smartcinema smartmovie v installation, operation and setup files.

C:/system/data/utility _ dump.dat/files for installing, operating and setting SmartMoviev V.

C:/system/apps/visualradio/radio stores the backup of broadcast files, with 2 copies.

C:/data/installations/ is the installation directory of the software, which can be cleared.

C:\ System \ Data \ Contact. Cdb is the same as c: \ system \ data \ cntmodel.ini \ addressbook.

C: \ system \ data \ scshortcourtine.ini \ standby mode

C: \ system \ data \ MMS _ setting.dat \ MMS settings

C: \ system \ data \ smsrest.dat，smssegst.dat，SMS _ settings.dat \ SMS settings。

C:\system\data\cdbv3。 Dat\ connection settings

C:\system\data\notepad。 Datwap\ notepad

C: \ System \ Data \ Bookmark 1.db \ Bookmark

C:\ System \ Data \ Profile \ Scenario Mode

C:\ System \ Data \ Calendar \ Schedule

C: \ system \ favorites Note: You can move these files to e: \ system \ favorites.

C/system/install\ uninstall files, which are located in this directory.

(Premise: the software is installed on drive C) The file can be deleted, but if it is deleted, it will be lost in the program management list. Only the corresponding directory under e\system\apps\ can be deleted directly.

C/system/install\install.log\ installation record file), to delete the installation record file, just delete some files.

Settings and archive files are located in the directory under c\system\apps.

C:/system/dmgr, there are two folders in it, and each folder has a contents folder. These are some files (maybe videos, music, texts, etc. ) Usually downloaded from the Internet, you can empty it.

C: \ system \ data \ CBS \ cbtopicsmgs.dat \ are some information files set for operators, such as broadcast information and cell information, which can be cleared.

The files and folders generated under c:\sys\install\sisregistry\ (such as a00000eb\00000002_0000.ctl) are mostly files generated after programs and themes are copied to the card and then installed through file management.

C: \ preapcache.dat \ are mostly installation record files of themes and programs.

2. Directory analysis of flash cards

(1) Personal effects

Private directories contain some important data, which are introduced as follows:

Dictionary 10 109CFE software registration information, application resources, rsc file: 1003A3F \ Import \ Apps software installation file is backed up, and program management remains after some programs are deleted, so 10202dce Java program storage folder/kloc-0 is deleted. Theme storage folder on MIDlets card 10207 1 14\ Import Bounce MP3 ringtone editor 20000C 0f QuickMark 20004 FFE Java program 102033E6 MAIL2 SMS 1000484B Capsule 2000127/theme DIY 20004A 20 of Fice Suit Sheet 2002EEE.

Everything in the sys\bin directory is an executable file exe.

Resource files in the resource\apps directory, which is read-only.

The installed Data\mbook Pocket Academy configuration file storage folder. If the book can't be opened, you can delete umdrcnt.lst and mdstng from it and reopen it.

Image photo storage location

Install storage installation files.

MusicDownloads machine has its own browser to download music, which is available here.

Songs exist in my music mode.

Sound ringtone storage folder

Video animation storage folder

Resource\apps program text resources exist here, mostly rsc files.

The help files attached to the resource \ helper are stored here.

Resource\plugins seems to be the place to put plug-ins, but there are only rsc files at present.

System \[ 102072c3] is unknown at present.

System\Install\RegistryJava program installation record file

Establish System\Apps\OperaOpera after installation.

Opera.ini in the System\Data\Opera folder can adjust the cache size, and the cache4 directory is the cache directory.

Second, C disk cleaning skills-six ways to improve the running speed

Regular cleaning of C disk garbage is a common method to improve the running speed of mobile phones. The following cleaning methods are applicable to N93:

1) file transfer method:

First, allocate information storage to machine storage, and then see how much memory your machine has. Use other Bluetooth devices to send you a file larger than the memory of the machine until your mobile phone shows that the remaining space is insufficient, and the transmission will be automatically disconnected (when the mobile phone receives the file, the memory will be automatically emptied, and if it is not enough, the connection will be automatically disconnected). The memory of drive C will become larger.

2) browse the cleaning method:

Use a random web browser to surf the Internet (which takes up a lot of memory), open more web pages until you are prompted that there is not enough memory to open them, then quit browsing and clear the cache.

3) Card replacement method:

With only one SIM card, the running speed of the mobile phone will slow down, and it is necessary to clean up the junk files on the C drive. The easiest way is to take the MINISD card, then change the SIM card and turn it on. After waiting for 3-5 minutes, turn off the phone and switch back to the original SIM card. In this way, the Series60 system will rewrite the data on the C drive and automatically clear the original useless files (some people say that this is not applicable to N93, which is wrong, and this method is applicable to all mobile phones).

4) Clean up temporary files:

All temporary folders are temporary directories that can be emptied.

The data directory installed on disk C is the installation directory of the software, which can be cleared.

C:/system/dmgr, there are two folders in it, and each folder has a contents folder. These are some files (maybe videos, music, texts, etc. ) Usually downloaded from the Internet, you can empty it.

Enter information-options-broadcast information, click options-column-delete all, and then select "Yes" to periodically clear c: \ system \ data \ CBS \ cbtopicsmsgs.dat.

Regularly clean up SMS and call records and group data (press the function key first-> My application-> Call record-> Packet data, just clear the packet data counter (lock code: 12345)!

The cache folder is a cache directory, so it is recommended that you empty it regularly.

There is a system.ini file in the system folder of drive C, which can be deleted. After deletion, the system will automatically generate this file to see if the generated file is much smaller than the file before you delete it.

5) calendar acceleration method (theoretically, it can improve the startup speed), and the method steps are as follows:

First go to > Calendar > Options > New Calendar Item > Schedule.

Subject: Speed Scheduled Date: 29-0 1-2005(dd-mm-yy) Priority: High.

accomplish

Go to > Calendar > Options > New Calendar Item > Schedule again.

Theme oukie scheduled date: 29-0 1-2005(dd-mm-yy) Priority: low.

accomplish

The important part that can't be missed: don't quit yet, mark the topic: speed and topic: oukie as: complete.

Finally, restart the phone.

Principle analysis:

Because the mobile phone needs to transfer all unfinished calendar affairs (from 1900-2 100) to the memory and display them on the desktop (theme scene) to remind the owner of the mobile phone of some unfinished matters, appointments and anniversaries. Therefore, the program will scan back from 2 100 to 1900, and traverse the calendar transactions in 200 years. Can you imagine how much system resources this will take up? Until a "completed" transaction is scanned, subsequent dates are considered as past dates, and scanning will not continue. Therefore, the last step of the original text: it must be set to "completed" to be effective.

Because of this mechanism, when there are "completed" to-do items on the date set above, it will no longer display the to-do items before that date in the theme scene, thus saving system resources and using process management software to check and compare, and the available memory space will be much more than before setting. This is why this method can speed up.

6) Using the C key and the Hang-up key can improve the startup speed.

The method is to press the C key or the Hang-up key when the handshake screen just appears when the mobile phone is started, which can directly enter the standby screen and improve the startup speed.

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Third, cell phone formatting

When you use a smart phone, you will inevitably need a grid machine. The grating machine is to format the ROM of the mobile phone, rewrite the preset data, and repair all files modified or added by users without authorization, so that the mobile phone is in the preset state when it leaves the factory.

There are usually two kinds of grid machines:

First, there are serious system errors.

Second, there are too many programs installed and deleted repeatedly, resulting in too many junk files on disk C, resulting in too little space to clean up.

The lattice machine is a hassle, and it is annoying to reset the backup things, and so is the old lattice. After all, we have installed a lot of personal games and software, and it takes time and energy to reinstall them all. So it's not a serious system error, try to avoid formatting the phone.

Only when there is an unknown error in the system and the cause of the error cannot be found (for example, the system always prompts to shut down, crash and make an error) does it need to be checked. It should be noted that everything should be loaded with E as much as possible, because the accumulation of C disk is also prone to errors.

1, eliminating and solving system errors and avoiding the basic points of grid machines.

First of all, the mini card error will lead to an error:

When there is an error in the system, first make sure that it is not the error of disk C (take out the MINI card, the mobile phone is normal), then take the file of disk E into the computer, format the MINI card with the computer or mobile phone (mobile phone format is recommended), and then take the file back to the MINI card, which may solve the problem.

The second is to use the elimination method to judge whether it is the error of disk C or disk E:

Determine the problem according to the routine elimination method-change the sim card, change the battery, change the flash memory card ... If the fault still exists, it can generally be concluded that there is something wrong with the machine itself or the memory card.

Three, random self-starting software error:

If the flash memory card is not detected when the mobile phone is turned on, it is set to be started randomly but the software installed in the card cannot be started, which will cause the mobile phone to be unstable in the standby screen. This is one of the reasons for misjudging system errors. Many people format this, but it is not necessary. Therefore, if it is set to random soft key, it is recommended to install it on the C disk of the mobile phone.

The fourth is the error of software installation and deletion:

Not all situations that prompt "system error" need to format the phone. Sometimes, after we install a new software, we get a "system error" when we start running any program. After deleting this software, it is generally necessary to consider whether the newly deleted software has not been deleted. Because the software has been deleted, the original path cannot be found when the system starts, and a system error will occur. This can directly delete the startup path file, restart the machine, and the system will re-establish the startup file, that is, the system. INI file. However, some self-initiated software registration information is saved in this file, and you need to start the corresponding software again and register again.

Besides, we can uninstall all the software first, and then see if there is a similar "system error"! If there is no similar "system error", then proceed to the grid machine!

Fifth, the phone can't work normally due to the wrong settings:

In this case, you don't need a grid machine at all. You just need to restore the factory settings. The method is: enter *#7780# on the standby screen, which is equivalent to menu-Tools-Settings-Phone Settings-General-Factory Settings. Note that this command only restores the settings, which is different from the grid machine. After the repair, all business cards, pictures, files, etc. Still exists, but the settings have been restored.

After the above five methods are eliminated, if the mobile phone still has problems, it is often restarted and turned off, but it can't start or turn on the power, but it can't enter the standby state again, or the standby state is only on for a few seconds, and the mobile phone restarts itself repeatedly and then turns off, indicating that there is a serious problem, which generally requires troubleshooting.

2. Precautions before grid connection:

A. data backup before formatting:

No matter how you format the mobile phone, all C drives of the mobile phone are restored to the factory state, including your SMS and phone book, so you should keep the programs or other files you want before formatting. Can be operated with a card reader. Determine the information to be backed up in advance, such as SMS, business card, calendar, installed software, etc.

What should the grid machine back up? First of all, the more backups, the better, because you often back up the wrong location. So as long as I back up some business cards and other necessary things, my grid machine only backs up business cards and program classification files.

Most users have changed the folder classification themselves in the menu. After the machine is completed, the classification of these folders no longer exists, and all of them are restored to the default. At this time, it is necessary to modify the classification again. But this folder list file is stored in c: \ system \ data \ applications. Dat file, so you just need to back it up to E disk and restore it after debugging.

Of course, if you often listen to the radio on your mobile phone, you should make a good backup of the broadcast files (two files in c:/system/apps/VisualRadio), otherwise it will be troublesome to search for the radio after turning it off.

In addition, if you like to watch TV on your mobile phone, you should back up the GGTV folder of disk C to avoid downloading TV programs again after downtime.

B, keep the power absolutely sufficient,

Don't try to turn off the phone or plug in the charger on the way to the lattice machine. Generally, soft cases are the first.

C, after the machine is checked, the software originally installed on the card will be affected.

So in general, the important information of the card is formatted after backup. All the programs saved on the E disk are reloaded after the cell phone is formatted. Although it is annoying, it is the best way.

3, the method of cell phone formatting

1). Soft shell:

Input on mobile phone

*#7370#, the phone will prompt to restore all original settings? The phone will restart. Select Yes, and then you will be asked to enter the lock code. The initial password is: 12345. If you change the phone password, it will be the changed password (not the SIM card password). After that, a white screen will appear, showing only the words NOKIA. After 2~3 minutes, the screen is completed and the time will be re-entered.

It should be noted that there are some softwares (such as third-party fonts, screensavers, etc. ) to boot the e disk where the memory resides, and formatting in this way is invalid. Therefore, before the soft grid, all these softwares should be closed first, and then the Chinese font file can be successfully formatted by deleting them.

Under normal circumstances, you can press and hold the pen key to enter the safe mode when starting the machine, so that you can operate in a clean system and avoid the influence of some software started from the machine.

2). Hard grid:

Turn off the power first, and press the dial key, "*" key and "3" key when starting the machine, and then release it until the word "NOKIA" appears (no key can be released during this process). Please wait a few seconds before releasing the above button. I started formatting. This formatting is thorough, and there will be no problem of invalid formatting. After a few minutes, the system is formatted and the phone automatically restarts to enter the standby screen.

This method is generally used when the system is too chaotic to start. This format is thorough and there will be no problem of invalid format.

3). Press * # to turn off the machine and start the grid machine without any prompt.

4. Description of the format:

First, the most thorough formatting steps are:

In program management, uninstall all the programs that can be uninstalled-take out the flash card-check whether there are system errors-format the mobile phone-install the flash card-format the flash card-(at this time, the mobile phone is the purest basic system)-install the programs that need to be installed-restore the card holder.

B. how to change from English to Chinese:

Go to Tools-Confirm (i.e. Settings)-Confirm (i.e. phone settings)-Confirm (i.e. normal)-Confirm (i.e. phone display language)-Just select Simplified Chinese (the confirmation key is OK).

C, lattice machine will not cause hardware damage to the mobile phone.

The storage device of a mobile phone is different from the hard disk of a computer, and belongs to flash ROM. When in the grid, it simply writes superimposed data. There are no problems such as hard disk track partition. Some people say that the CPU is overloaded when the grid machine is running, which is even more harmonic. To put it bluntly, the lattice machine is as simple as turning it on and off.

D, the grid machine has little effect on saving C disk memory.

The memory occupation of drive C is only related to the number and use of installed software. In the process of using the software, some necessary related files or some mobile phone operation records will be left on the C disk, which will of course take up some space.

E, the number of parallel machines will not lead to the failure of parallel machines.

Many people say that the lattice machine is not qualified with more mobile phones, and most of the lattice machine failures are caused by its own fonts, which has nothing to do with the lattice machine itself. Lattice machine has no sequelae. It will not cause problems such as ringing or weakening the voice of incoming calls.

F, after the lattice machine, you will find that some software is useless.

The main reason is that these softwares will leave files on disk C during installation. When you format your phone, these files will be deleted at the same time. You'd better reinstall these softwares.