SIM cards
https://gyazo.com/1dd6e0e74f0b443b871585b7794ae502
You can buy pre-paid traveler SIM cards at any of the major electronics stores like Yodobashi camera or Bic Camera
The most convenient option for visitors may be the Bic Camera on the far west side of Kyoto station
There you can find the cell phone section and look for an IIJmio sim which is a good option
Note
There is free Kyoto Wi-Fi available in almost all train stations and near most bus stops
You may be able to get by on the free wifi but getting a SIM card or roaming data is still a good idea when you are away from these areas.
See How to get a mobile phone (or regular sim) for long-term use
? Where is the best place to buy SIM cards?
#cellphone