What's the use of a 3X Zoom Days for a smartphone?
Especially it is for the Galaxy S10 / Galaxy S10+?
Frankly, the only use probably is for Portrait Photography?
The is not the official answer to this lens, the image will a little bit outstanding than the original one or use the digital zoom.
and if you are using other 37mm thread lenses either from us or from others, you may use the included cover for your existing 37mm thread lenses.
It is for Galaxy S10 and Galaxy S10+. The cover is custom for them, not other universal lens that can compare with.
We may have the same cover for future Galaxy s11 / Galaxy S11+, at least we are doing so from Galaxy S4 and iPhone 5s
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