hi i put a code in the phone useing 217020 as it ssiad by uesing this code it wood unlock the phone but after i turned it off then tried to turn it back on its not even comeing on but it did come on and charge up but nothing now can someone help. ps the phone is from 1998 or 1999 it was my step sons phone but he died 18 years ago would like to get it working again its for his mam help please