Originally Posted by Accidental Scientist

I am looking for some advice about using my phone in Japan. There is a lot of information online about the compatibility of various handsets with Japanese sim cards and I am now very confused!

I have an unlocked iPhone 7 model A1778. My understanding is that this model is not compatible with Japanese networks (something about GSM versus CDMA which I don't fully understand...). I want to either buy a sim card in the UK before I go or in Japan. The staff at this agency say that the prepaid sim described will work, but when I asked about using my GSM phone in Japan they had no idea what I was asking... https://www.japantravel-centre.com/j...an-travel-sim/

Do any FTers have any advice?

Thank you