TL;DR: Make sure you have SIM Manager (previously eSIM Manager) app installed from Play Store and enabled.

When I tried to activate Google Fi services on my Pixel, I always encountered the error code T120. I contacted technical support from Google…

Recently I upgraded a few servers from Ubuntu 16.04 LTS to the latest version of 18.04 LTS. However, I ran into a strange issue that the system will always boot into black screen immediately after the grub menu screen. I…

It is embarrassing to admit that I only found out there are so many useful contents on the Internet on grad school applications (specifically for Computer Science field) after I submitted my application last winter.