In some areas of Yamagata and Fukushima prefectures, mobile phone connections have become difficult due to heavy rain.
As of 10:30 am on the 4th, NTT Docomo is in some areas of Yonezawa City, Oguni Town, Iide Town in Yamagata Prefecture, and Kitakata City in Fukushima Prefecture, and au's KDDI and Softbank are in Oguni Town, Yamagata Prefecture. It means that it is difficult to connect to mobile phones in some areas.
Due to power outages, etc., each company is rushing to restore work.
In addition, Rakuten Mobile is currently confirming the effects of heavy rain.