You get Hashtag Points by defeating enemies near your level (20 levels below and 20 levels above). Once you get a certain number of Hashtag Points, the Hashtag Phone automatically levels up.
Lv. 1: accumulate 100 Hashtag Points
Lv. 2: accumulate 300 Hashtag Points
Lv. 3: accumulate 700 Hashtag Points
Lv. 4: accumulate 1000 Hashtag Points
You can freely customize the background, hashtag, expression, pose, and emoticon of the Hashtag Master Chair (2.0) according to the level of the Hashtag Phone.
You can get up to 100 Hashtag Points a day.
You can complete the "[Hashtag] Daily Hashtag Points" quest and get the following gifts if you have reached the daily Hashtag Points.