Once you have an unlock code, use this specific sequence to enter it into your device: Hard Reset NOKIA 100
Nokia feature phones almost always ship with a standard factory code. 12345 . Try this first; many users never change it. 2. Master Code Reset If 12345 doesn't work, you may need a Master Code.
The simplest, most reliable, and officially supported method is to contact your . Most carriers will provide an unlock code for free if you have fulfilled the terms of your contract (e.g., paid off the phone or been a customer for a certain period). This is the safest way to ensure you get the correct 20-digit NCK for your Nokia 100.