I apologize for my ignorance in understanding everything ive read regarding international usage, i am very unsure about what to do and what not to do so here goes my question...... I currently have a Note 8 with the unlimited data plan. I have no desire or interest in paying for a international plan when i will have access to my daughters phone for calls. My phone is currently set up for data usage and i dont wait for a wifi for anything. First off do i need to change all my settings to reflect only using wifi so i dont get charged for data usage and will i b able to use wifi to make calls if i have to without extra charges? Im kinda new to all this and dont want to come home to a 1000$ bill after spending a month in germany. Lastly is there anything i need to do so while im flying i can watch movies, play games or listen to music without those extra charges? I leave in 3 days so any and all help will b greatly appreciated.