I forgot my phone lock code. how can i unlock it? or reset it w/ factory data reset.

SOURCE: can't remember my phone lock code

i forgot my unlock code

SOURCE: Unlock Phone SAmsung SGH-U700

hi amielle,
 
     if ur have forgotten ur phone lock code, it won work with any sim u insert...u can't go inside d phone, unless d lock is removed, which is possible if u know d code....so take it to an authorised samsung service centre and tel ur problem....they ll remove d lock and restore it to factory settings...because oly they have d software to unlock ur phone....if ur mobile is within warranty period, this would be done at free of cost....
                                                                          best wishes,
                                                                           trendsetter

SOURCE: forgot security lock/unlock code and now i cant use my phone at all.

call the phone comp they will eset i for you

SOURCE: Forgot Lock Code - Samsung m500 Cell Phone

try to use last 4 digit of your phone number . go into the menu then setting then security then enter four digets and you can find these 4 degits into in setting then phone info enjoyyyyyyyyyyyyyy

SOURCE: forgot lock code on LG EnV, need to reset settings for donation

I had the same issue with the same phone. By pure luck, I tried the last 4 digits of the phone number last used on the phone and it worked!