Immersive Portals Mod PE 1.17+

pojav launcher [java on phone] REQUIRED!

Immersive Portals mods simplify the transportation from a dimension to the other making portals completely transparent and you can see through them and even pass with no loading screen or any of that, this is one of the most useful and well-done mods I've come to see.

This mod's applied on all portals nether, and end portals, you won't believe that but it even works on portals that exist on the mods, it's truly a fascinating mod, won't affect your Vanilla Minecraft instead it'll make it far better and enjoyable, with off limits!