At first glance you may think that the M-phones are just Samsung's entry-level series, but then you risk overlooking the Samsung Galaxy M30, which has all the makings of a sleeper hit. Really, the name is quite misleading - this phone is more capable than the Galaxy A30, even though the A-series is supposed to sit higher than the M-series and be second only to the Galaxy S/Note flagships. Name aside, the M30 is the only one of its siblings to feature a Super AMOLED display. It has 1080p+ resolution and a small waterdrop notch for the 16MP camera. It does face unlock or you can use the...
Source: https://www.gsmarena.com/samsung_galaxy_m30_in_for_review-news-37722.php