I remember that way back in 2012, I could not get my phone to work in Seoul. Similarly in 2014, I could not activate my roaming nor get a SIM card to work but WiFi worked just fine. For this trip, I am faced with the dilemma of choosing between buying a SIM card with unlimited data or renting a WiFi egg. I have to be reachable at all times by my husband and preschooler who will follow me in Seoul during my last 4 days there. To help me choose which one to get, I should first ascertain whether our phones will work in Korea. My husband is currently…