The quintessential mobile phone has developed by leaps and bound and is now considered a serious option in filming professional videos, though image stability has been a major issue, with jerks and shakes ruining important moments. While optical image stabilisation available in premium smartphones solves this problem to some extent, silky smooth stabilisation remains a distant goal. Which means an external aid is a must if you are into serious filmmaking with your smartphone.
While 3-axis gimbals are common attachments for professional cameras, a few options are also available for mobiles and DJI's products have been setting benchmarks for sometime