you dial *22899 that will reset the code to the last four digits of the phone number.
let me know if that helps
How do I do a master reset on a samsung u410? My son's phone pasword was changed by someone and he does not know it, therefore resetting back to factory defaults is the only way I can think of to get past this "new" password. The phone is set to lock if powered down and this will leave him without a phone. My son is a soldier and having this phone is very important. I contacted the service provider, Telus, and they told me they could not do it. I went to the store and they had no idea how to do it. I contacted the Samsung 1-800 # and there is no one in on the weekends. My son goes back to the field tomorrow and I would like to get this taken care of before the phone powers down and locks on him. Someone must be able to help me.