Share your experience!
dear sir
i have xperia m c-1904 phone
my phone is working properly before i changed simcard
after that phone is start but want security password
i have no password or never use password in phone
plese help me to unlock phone
@garg
If you were using an antivirus app it could cause this, or it could be that your phone its SIM locked to a network/carrier and it request the code to unlock it since you are using a different SIM card, could you elaborate?
