Must Be Known
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Q1: My application can't work properly, what to do?
1. Is it warez? It might not be compiled properly and you deserve it for getting warez applications.
2. Try to uninstall the installed app on ur phone 1 by 1 and see if it has conflict (crashed)
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Q2: My phone shows SYSTEM ERROR, so how?
1. Start your phone in safe mode by holding the pen/pencil key on phone's keypad when you start your phone. Don't let go until you are asked to key in your pin code or lock code.
2. Pull out your memory card and restart your phone. If your phone runs normally, it means your card is corrupted. Just format your MMC.
3. Reformatting:
-Restore original phone settings-*#7780#
-Soft format-*#7370#
-Hard format-Press 'Dial key/ green button' + '*' + '3' and hold them until the word 'Formatting' appears.
-Flashing or firmware upgrading.
*Before formating a phone or MMC, it's better to backup it first such as contacts, notes, important files etc.
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Q3:My memory card is LOCKED, what should i do?
1.Search for the file MMC store at C: using any file manager such as f-explorer,xplore etc.
Change the file to .txt and the password for your MMC is there. (*Don't format your phone or you'll lose the file)
2.Reformat your MMC using Nokia 9210 or 6680.
(*Data will lose for reformatting the card)
3.Reformat your MMC using certain memory card reader which can read locked MMC.
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Q4:My memory card is CORRUPTED, is it possible to rescue it?
1.There is no solution except reformatting it but u can try R-studio if card isnt damaged.
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Q5:My phone is infected by VIRUS, please help!
1.Usually, warez users often get to this problem. So, remember, don't install warez from unknown source.
2.You should update yourself with the recent virus info, install good antivirus.
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Q6: My phone memory in use is full, what should I do?
1. You need certain applications such as Switcher and Appman to compress ram and kill uneeded.
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Q7: How to start in Safe Mode?
1.To make sure that no memory-resident programs start when you reboot your phone, hold down the edit button (pencil key) when you turn on the phone and hold it on untill you have to enter your PIN code. If you still can see some auto-startup applications running on your phone, that means you still haven't started in Safe Mode.
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Q8: How to transfer messages from phone memory to memory card or in reverse?
1.Delete Mail folder at E:/system (if there are messages already in your MMC). Now, enter Messaging and go to the settings to change your memory in use to MMC. Press yes to copy all your messages to MMC.
2.Change your memory in use for the message inbox that you are using currently (change phone to MMC). Go to C:/system and copy the Mail folder to somewhere else. Now, change back the memory in use to phone memory and paste the folder u copied just now to E:/system.
For newer phones such as 6680,n70 etc.. Go to msg setting > other and select memory in use.
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Q9: Why can't I send files via bluetooth?
1. You can now do this by changing the extension of the applications to .txt, .jpg, etc.
2. Try using xplore. It can send the applications without the need to change extension and protected copyright it can.
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Q10: How to backup contact?
1. Use any file manager such as Fileman, SeleQ, Fexplorer, etc. Go to C:\System\Data and copy Contacts.cdb. Paste it at somewhereelse in your MMC. When you want to restore your contacts, go to the same location C:\System\Data and paste contacts.cdb there.
*Do this at your own risk. Phones running on Symbian OS 6.0 phones are not advisable to use this method.
For Symbian OS8.0 or higher, open contacts> option> mark all> copy to phone memory/memory card. After that there is an option to restore from contacts as well.
2. Using 3rd party applications such as
-Contacts Manager by AGORA plus
-Backup Contacts by Webodrome Arise Technologies
-SmartVCard by SmartAppz & SymbianWare
-Sprite Backup by Sprite Software
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Q11: Not able to remove apps?
1. Restarting your phone will sometimes help you on this problem.
2. APPLICATION IN USE. What can you do now? First, install some 3rd party apps such as Switcher, FExplorer or AppMan. Run the application now and you should kill the process of the applicationa which are running. Now, you can remove the apps that u desire to uninstall them.
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Q12: What should i do to unlock my phone?
1. For DCT-3 and DCT-4 phones, you can use MCode by Dejan Kaljevic
Code:
Nokia phones which can be unlocked using MCode
DCT 3: 2100, 3210, 3210A, 3310, 3315, 3320, 3330, 3350, 3390, 3390B, 3395, 3410, 3610, 5110, 5110i, 5110iA, 5120, 5125, 5130, 5160, 5170, 5180, 5185, 5190, 5210, 5510, 6080, 6081, 6090, 6110, 6120, 6130, 6138, 6150, 6160, 6161, 6162, 6185, 6188, 6190, 6210, 6250, 7110, 7160, 7190, 8210, 8250, 8260, 8265, 8270, 8290, 8810, 8850, 8855, 8860, 8890, 9110, 9110i
DCT 4: 1100, 1100B, 1108, 1110, 1600, 2220, 2260, 2270, 2272, 2275, 2280, 2280A, 2280B, 2285, 2300, 2600, 2600cn, 2650, 2651, 3100, 3100B, 3105, 3108, 3120, 3120B, 3125, 3200, 3200B, 3205, 3220, 3230, 3300, 3300B, 3360, 3510, 3510i, 3530, 3560, 3585, 3590,3600, 3620, 3650, 3660, 5100, 5100A, 5140, 5140B, 5140i, 6020, 6020b, 6021, 6030, 6060, 6100, 6101, 6102, 6108, 6111, 6170, 6200, 6220, 6225, 6230, 6230B, 6230i, 6255, 6260, 6260B, 6270, 6280, 6310, 6310i, 6340, 6340i, 6360, 6370, 6500, 6510, 6560, 6590, 6590i, 6600, 6610, 6610i, 6620, 6650, 6651, 6670, 6670B, 6800, 6800A, 6810, 6820, 6820B, 6820i, 6822, 6822B, 6830, 7200, 7200B, 7210, 7250, 7250i, 7260, 7270, 7270B, 7280, 7600, 7610B, 7620, 7650, 7700, 7710, 8310, 8390, 8800, 8801, 8910, 8910i, 9300, 9300B, 9500, 9500B, N-Gage, N-Gage QD
* BB5 phones are not included.

To unlock codes for BB5
models, and the important parts are within a high security smart card that is programmed by Nokia for each different network code.
In conclusion, as I know 3rd party unlocking is currently not available, only your operator can provide the necessary unlock code.
For some reasons, there's a software currently able to unlock phones such as N70, N90, etc (probably not compatible for 3rd Ed series) and it's named Unlock Me!

UnlockMe! is a software that will allow you to recover the Unlock Code actually configured in your mobile phone.
You have to install and run the software on the phone and after some minutes it will communicate you the Unlock Code actually configured in the Phone
This program it's usefull only in these circumstances
Note:
If you find a mobile phone that during startup asks you to insert the Unlock Code you will never be able to get the code using this program.
Compatibility
Nokia: 3230 / 6260 / 7610 / 6600 / 6620 / 6630 / 6670 / 6680 / 6681 / 6682 / n70 / n90
Panasonic: X700 / X800
Samsung: SGH-D720 / SGH-D730
Lenovo: P930
* For s60v3 or higher, there's no solution except flashing.
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Q13: What is MMC, SD and Memory Stick?
MMC (MultiMedia Card).
The standard of this flash memory card is defined by MultiMedia Card Association. It is used in many Nokia phones although some of newer Nokia phones support SD card too.
MMC / MMCplus - 24mm x 32mm x 1.4mm. MMCplus is newer standard with higher transfer rate.
RS-MMC (Reduced-Size MMC) - 24mm x 18mm x 1.4mm.
DV RS-MMC (Dual-Voltage RS-MMC) / - 24mm x 18mm x 1.4mm - It is the next standard of RS-MMC that supports dual voltages, i.e. 3Vand 1.8V. The lower voltage is used to reduce battery consumption. RS DV-MMC can be used in the mobile phones that support RS-MMC, but not vice versa.
MMCmicro - The newest standard that is smaller than RS-MMC. It is not available in the market as the writing of this blog.
SD (Secure Digital)
The standard of this flash memory card is defined by SD Card Association.
SD Card - 24mm x 32mm x 2.1mm. The dimension of SD card is similar to MMC, it is just thicker.
miniSD - 20 x 21.5 x 1.4mm.
microSD / TransFlash / TFlash - 11mm x 15mm x 1mm. This memory card is getting more and more popular. Some Motorola phones, including ROKR, uses microSD.
Memory Stick
This standard is mainly pushed by Sony and it is used in many of Sony Ericsson phones. Sony is a very big company, that's why they can push their own standard of flash memory. The specification of Memory Stick is available at Memory Stick Developers' Site.
Memory Stick Duo / Memory Stick Pro Duo - 20mm x 31mm x 1.6mm. It is the smaller version of Memory Stick / Memory Stick Pro, which are used in many Sony devices, such as digital camera. Memory Stick Duo can be used in Memory Stick reader using a special adapter.
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Q14: What is IMEI? And how to show my IMEI?

IMEI = Short for International Mobile Equipment Identity, a unique number given to every single mobile phone, typically found behind the battery.
IMEI numbers of cellular phones connected to a GSM network are stored in a database (EIR - Equipment Identity Register) containing all valid mobile phone equipment.
When a phone is reported stolen or is not type approved, the number is marked invalid.
The number consists of four groups that looks this:
nnnnnn--nn-nnnnnn-n
The first set of numbers is the type approval code (TAC). The first two digits represent the country code. The rest make up the final assembly code. The second group of numbers identifies the manufacturer:
01 and 02 = AEG
07 and 40 = Motorola
10 and 20 = Nokia
41and 44 = Siemens
51= Sony, Siemens, Ericsson
The third set is the serial number and the last single digit is an additional number (usually 0).
To show your IMEI, just easily key in *#06#.
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Q15: How to get rid of "App. closed Main Error"?
1) Open your filemanager/explorer
2) Go to c:/system/bootdata & delete FirstBoot.dat
3) Turn off phone & take out your MMC card
4) Turn on phone and put in current time/date
5) Wait for it to boot up then turn off phone again.
6) Put MMC back in and turn on phone.
This fixes the "App. Closed Main" error.
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Q16:What are the Protected Nokia Content?
-Certain format of files are recognised as Protected Nokia Content, such as the following:
* Images- .png
* Videos- None
* Sounds- .rng, .mid, .midi
* Programs/Applications- .sis, .jar
-You might not be able to send these files via bluetooth because of this.
-The easiest way to overcome this problem is by renaming the files extension or use xplore, kindly refer to the post above.
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Q17: What should I do to overcome the problem of getting my menu messed up everytime I switch the card?
Just copy C:/System/Data/Applications.dat to somewhere else.
If your Menu is messed up, copy this file again to the same directory and you will get it back as what you had arranged before that.
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Q18: What are .ini files in the system folder?
The .ini files in your system folder usually store various information such as important phone settings, message settings, 3rd application settings and customizations.
The files which u can considered to backup:
System\..
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..\Favourites\ => Go to menu
System\Shareddata\..
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100058b3.ini => volumen, oplogo, etc
100058be.ini => sms setings
100058c5.ini => sms set ll
100058ec.ini => callset_scrensaver_softkeys_etc
101f4cd5.ini => Call counter
100058fa.ini => tonespaths
1000593f.ini => camera
10005952.ini => BT
10005a32.ini => skins/welcome/idle image
10008d39.ini => wap
101f4285.ini => wClock
101f9ce6.ini => fscaller
System\Data\..
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..\Profiles\... => Profiles settings
..\angrysoft\...=> SMS counter
..\Template.n01 => SMS templates
..\Notepad.dat => Notes
..\AlarmServer.ini => Alarms
Other
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system\programs\BlackList\... => Black list situation
system\apps\profileapps\dbProfile.db => Ringtone settings (general/silent/w_ever)
System\Recogs\... => file assosiation
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Q19:Alphabetical input problem
For Symbian Series 60 phones, when you CAN'T WRITE LETTERS" but only numbers, try the following steps:
*This problems is usually caused by installation of wildskin, so you must remove it before proceeding to the following steps. However, if you do not install wildskin, avoid this sentence.
1. Run any 3rd party file manager (i.e, Fexplorer, Fileman, SeleQ, etc)
2. Find C:\System\System.ini and
c:\system\bootdata\firstboot.dat.
3. Delete these files and click YES (it won't cause any severe damage to your phone)
4. Restart your phone