1. Home Screen -> Settings -> Wireless & Netowrk Settings > Mobile networks > Network operators -> Select Automatically
2. Home Screen -> Phone -> Dial *#*#4636#*#* -> Phone Information -> Switch from 'WCDMA preferred' to 'WCDMA only'
截至目前為止約三天還尚未發生此問題,後續我再觀察看看
