I lost my galaxy ace duos. The sim card has been changed. How can i trace phone or find the number of the new sim being used? I have several apps installed. can that help in anyway? Thanks for the help
Samsung Galaxy Ace Duos has Android 2.3 installed, so you should be able to use Plan B.
This app sends the location of your phone to your email. Of course this requires your phone having a connection to Google play with your account.
In general: saying 'I have several apps installed' does not help, providing information what apps are installed maybe does.