SIM card for unlocked US iPhone

TIM Tourist or Vodafone Holidayare tourist oriented SIMs that cost €30. They offer different services. TIM has a store in Terminal 3 so you could get your phone up and running before you leave the airport.

TIM was a big bad no go for my family on our recent trip to Italy. We experienced multiple problems and terrible customer service....but don't take my word for it, do a Yelp review for yourself and make your own informed decision. Some have apparently had a good experience on here, but many others also have not. In fact, I would rather chew on a handful of gravel then use TIM again lol! Anyway, I hope that you have an amazing vacation whomever you choose to go with.

I recently got a TIM tourist SIM card at the store on the 2nd floor of the Termini station. I was in and out in 15 minutes and it worked flawlessly throughout my 2 week trip in April. I also had an unlocked Verizon phone.

TIM has a great reputation other than with one particular poster. I bought a TIM SIM some years ago and it worked fine. There's also Vodafone - both TIM and Vodafone are known to have good coverage in Italy. I've used my Dutch Vodafone SIM in Italy twice in the last few years (roaming on Vodafone.IT of course) and the coverage has been great. You probably can't go wrong with either TIM or Vodafone.

Not sure if it is related, but my Son had a Verizon unlocked phone on a trip, stopped into a phone store in Germany (so not 100% the same) bought a SIM, they installed it, several hours later, still not working, took an hour in another store to find the right person that could change the Verizon settings to fully accept a Non-Verizon Sim card (Unlocked but would not necessarily accept a Non-Verizon SIM card)

Not sure if it is related, but my Son had a Verizon unlocked phone on a trip, stopped into a phone store in Germany (so not 100% the same) bought a SIM, they installed it, several hours later, still not working, took an hour in another store to find the right person that could change the Verizon settings to fully accept a Non-Verizon Sim card (Unlocked but would not necessarily accept a Non-Verizon SIM card)

Probably had to do with roaming settings, not the SIM, so that the phone would roam on GSM networks instead of sticking to CDMA that is used in the US. Would have had the same issue using the phone with the Verizon SIM but roaming in Germany with Verizon's international plan. For what it's worth, both of the Verizon-branded Android phones I used in Europe have worked there without changing any "Verizon settings." I did enable data roaming though. Both phones displayed a "SIM Card is not from Verizon" message after power up, but these were just "info" messages easily swiped away and had no functional meaning. I can imagine how someone whose phone is not roaming correctly seeing that SIM message might think the message is related to the problem. It isn't.

Every phone is different, and I wouldn't expect someone at a mobile store in Germany to know all the settings for particular phone. I'd probably stop at a Verizon store in the US before heading to Europe and asking them how to use the phone in Europe - let them show you the settings. Just tell them you are planning to use Verizon's international plan. Remember which settings they tell you to change - and change the same ones when you insert a non-Verizon SIM.

Loved my one month TIM card. Worked perfectly in Puglia and Sicily, voice and data.

I found this blog post when I was researching SIM card opitions available at Fiumincino Airport in Rome for a trip to Sicily earlier this year. You may find it helpful-
https://www.traveltomtom.net/destinations/europe/italy/buying-a-italy-sim-card-in-rome-airport-fiumicino

I chose to go with a SIM card from Tre 3. Worked great.