fraggle2021
Lurker
got myself locked out of my phone ( was drunk ) tried everything short of buying a new one and nothing worked but i found a nice workaround while messing about 
remove sim and mem card
1 : drain battery
2 : put on charge with phone turned off
3 : start phone
4 : from the login to account screen press back button untill on the slide to unlock screen
5 : remove charge cable
6 : you should get an insert charge cable screen with ok and battery use
7 : hit battery use and a new screen should apear hit ( house button ) and then hit menu / settings
two choices
a : if you know your unlock code
8 : location and security / change screen unlock / enter combo then set up a new one ( use a password or pin code as using swipe just resets device back to locked )
b : factory reset
9 : privacy / factory reset data / reset phone / confirm / wait for reboot
replace sim + mem card
personally i used the factory reset and no problems at all
hope this helps
remove sim and mem card
1 : drain battery
2 : put on charge with phone turned off
3 : start phone
4 : from the login to account screen press back button untill on the slide to unlock screen
5 : remove charge cable
6 : you should get an insert charge cable screen with ok and battery use
7 : hit battery use and a new screen should apear hit ( house button ) and then hit menu / settings
two choices
a : if you know your unlock code
8 : location and security / change screen unlock / enter combo then set up a new one ( use a password or pin code as using swipe just resets device back to locked )
b : factory reset
9 : privacy / factory reset data / reset phone / confirm / wait for reboot
replace sim + mem card
personally i used the factory reset and no problems at all
hope this helps