Also, you can easily determine which line is being used for incoming communications with certain dual SIM devices that allow you to customize the ringtone and notification settings for each number. Not only can you a666e gamelter communication settings, but you can also control how each number appears in your messaging app and contacts list. When using a local SIM card while traveling, this makes it simple to distinguish between work & personal contacts or to keep track of contacts from various locations. Customizable dual SIM settings allow you to fully control how each number is used on your device and customize the experience to your own needs.