I've been using POKEFI for quite some time, been to some remote town in SE Asia and works fine. Currently in Seoul with this device and finding it nearly unusable! Checked my device, strong 4G signal, battery charged, unlimited data plan. Intermittent internet connection (connection is out 80% of the time.) Couldn't even load Goolgle Map, Kakao Map, or Naver map. It is so frustrating. I got to go to a coffee ship and find some free wifi to use each time. Not really sure what is wrong, would appreciate any advice.

Travelers beware.