How you unlock a samsung sgh f250l?

For All unlock and phone freeze problems for SHG-F250:

Type the code *2767*3855# OR #*7337# or *#7337#

Please note, your IMEI may be changed to 15 zeros (000000000000000) Other than that, your phone should be unlocked

Works for me Because I spent an entire night trying but only this worked.