@tommyramone check if any issues with network, firstly try a restart and confirm you are on the Auto Connect Setting for Mobile Networks. you may need to clear the cache/Data of the app. Go to settings-Apps-phone-storage and clear the cache and Data of the phone App.
If this does not have the desired effect advisable to reset the Network Connections, Go to Settings-General Management-Reset-Reset Network Settings.
Another idea is to rensert the sim to see if that makes any difference.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
