The event of belief in 4.0 of Mobifone had held on January, 2019 with the participation of over 1000 invited guests. The program was the combination of unique and excited performances from celebrities Khoi My, Ho Quang Hieu and Hoang rapper. More than that, there were stunt performances of flying trapeze by circus professional performers. For all of those, the event had brought a satisfied entertainment stage to the invited guests.