Nokia DCT4 phones allow a maximum of five attempts to enter an unlock code. If you enter incorrect codes five times, the handset hard-locks. After a hard-lock, online calculators will no longer work, and the phone can only be unlocked using specialized hardware flashing boxes.
Unlike desktop software (e.g., Nokia Tool by JAF, Nemesis Service Suite), an online calculator runs in your browser. You don't need a special USB cable (DKU-5 or FBUS) or Windows XP virtual machine. nokia dct4 calculator online
To use an online calculator, you must gather three specific pieces of information from your device. 1. The IMEI Number The IMEI is your phone's unique 15-digit serial number. Type *#06# into your Nokia keypad. The IMEI will display on the screen immediately. Alternatively, look at the white sticker under the battery. 2. The Network Provider (MCC+MNC) Nokia DCT4 phones allow a maximum of five