You can unfreeze code for your Samsung Z140V phone from http://www.mobileunlocksolutions.com/samsung-z140v/rs16wp9/ and unlock your phone from Network lock easily.
sahana
September 2013
lol that was the funniest answer i´ve seen in a very long time =) take out the batteri
abbe
July 2008
try taking the battery out? and putting it back in. also make sure the battery is 100% charged before using the phone?