I was searching for info from the web before my trip to Korea to find out how I can make inexpensive phonecalls from Korea to Singapore and to Korea itself.
Mobile Phone Rental by SK Telecom Korea
Using my Singapore mobile phone at $1.85/min calls to Singapore (Singtel rates) and even more expensive calls to Korea, I was weighing the odds of either renting a cellphone from Incheon Airport or to just use my mobile phone.
Click on the picture below to enlarge it and you can see that it cost 1,098KRW per min (excluding 10% VAT, daily phone rental charges, 10KRW per sec) to make a phonecall back to Singapore. It may be even cheaper to use your own mobile phone to call back home.
Charges for Renting Mobile Phone In Korea
But if you need to make a lot of calls to Korea itself, renting a Korean mobile phone from the airport may be a good idea.
Locations To Rent Mobile Phone In Korea
In the end, I settled for public phones when calling my Korean friends and my favourite Kik to keep in touch for non-urgent matters.
Afterall, free wi-fi is widely available in Seoul. It's unreliable though; signal can be weak when on the streets. It's best to chill in a cafe when you need to use the internet or Kik someone. ;)