I'm a solo female traveler and will be traveling by train for 3 weeks (Venice, Florence, Cinque Terre and Rome) and am wondering if I can just make my iPhone a "dumb" phone for most of my trip unless I'm near free WIFI? My carrier is AT&T & they have 3 levels for international plans which I'm considering. I've also read about getting phones unlocked to purchase an Italian SIM card but not sure about the cost benefit of doing that.
I would use my phone to contact places where I'm staying to confirm arrival times, to get online for specific information, to use google maps and in case of emergencies. I imagine I would use it for train schedules and to book tickets and reservations etc. I won't be using it for social media or to call friends or family back home but may use it to text while traveling.
I already have most of my accommodation booked in a variety of AirBnBs and hotels but I have a 4 day stretch which I've left open to leave room for some spontaneity. I have several guidebooks in digital form so don't need to search online for that kind of information. I have downloaded "whatsapp" since several airBnB hosts said they use it but I don't have personal experience with it yet.
Sorry if this sounds like I'm making things complicated but the last time I traveled abroad was in the pre-cell phone era!! Any advice or suggestions?