Nokia 3310 request

[simo82]

Hi All, My name is Simeon and I am from Bulgaria. I read here that it is possible to unlock your security code.My phone is nokia 3310. The Nokia 3310 IMEI of my phone is 350102805521960 The problem is that my phone works quite well with my old SIM card.But I bought a new one and now the phone requires a security code. I tried the default code 12345 but it's not working. I think I changed it 3 or 4 years ago!But now I can't remember it!So can you please help me!

The Nokia 3310 IMEI of my phone: 350102805521960
I am a member of Mtel, Bulgaria My phone number is ***********
By now regards!
Simeon!