help me with my n6600..

No, hard/soft reset won't make 'Security Code' 2b unlocked.

SIM locked (PIN1/PIN2) or phone locked ('Lock code'😉?

If phone locked, then give me ur IMEI (type: *#06# on keypad in standby mode)

http://allaboutsymbian.com/forum//forum/thread/44094/

If SIM locked, then u must contact ur network operator. There's no another way 😊

i think its lock code...and i've search on the net, it's told that if i enter the wrong code for about 5 times,my phone will lock permanently..it's true??and if did a hard/soft reset it will fix this problems and i can enter the default code or something???

No, that's not true. Only PIN1/2 has it.
Just try to reset the phone and try 'lock code' 😉

hmm..you mean, if i did soft/hard reset, will be a little hope for me??and i dont have to Service Center??i've just download software to retrieve unlock code based on imei and provider..can i use that???

Well, u can try and keep inform to forum 😊

hey guys...i've been solve my problems..thx to all of you..special for rulirahm,who help me always..well, this my way:
1. i did my backup..
2. i try to unlock my phone with software i've been downloaded before..success
3. try to do soft reset with *#7370# and waiting for about 3-4 min..
4. phone restart..and walah..!!!my phone just got better now..
my little question again: by now i'll try to format my mmc..but i'm not sure, better i format my mmc by phone or by card reader??any suggestion guys???

thx for your reply guys...

Just same, but it's good to format it with phone and congractulation about ur phone is ok now. Have a nice day 😊