"The number of climbers on Mount Fuji has increased after it became a UNESCO World Heritage site. The UN said Fuji was an important symbol of Japan. There is now gree Wi-Fi service on Fuji. They hope the Wi-Fi service will keep climbers safe on the mountain. People can now check weather warnings and find shelter. They can also call for help if their phone loses its signal."
According to the passage, which sentence is NOT TRUE?