Is public Wi-Fi sufficient in Osaka, or is a CoreESIM more advantageous?

While limited public Wi-Fi is available in certain areas of Osaka, such as major train stations and some cafes, its security, speed, and overall availability can be inconsistent, especially in high-traffic tourist zones or less central districts. A CoreESIM provides a dedicated, secure, and consistently high-speed mobile data connection via established carrier networks. This ensures uninterrupted access for critical applications, secure transactions, and reliable navigation through Osaka Castle Park or Universal Studios Japan, surpassing the limitations of public Wi-Fi.