Dynamic Lighting
The mod known as Dynamic Lighting is based on the Java add-on “optifine“. While it may not reach the same level of quality as the original version, it still effectively fulfills its purpose, making lighting in Minecraft much more convenient.
To utilize any light-emitting items, simply hold them in your hand. Each item provides a fixed light level of 8. If you don’t have enough torches to place throughout a cave in MCPE, you can hold one in your hand and illuminate the area as you move.
The character is holding a torch that emits light in MCBE.
This also applies to lanterns. Hold any light source, such as glowstone, Jack’s lantern, torch, or lantern, and walk around, illuminating the area around you.
For some reason, this feature does not work with the sea lantern in Minecraft. Activating experimental gameplay from the latest versions of the mod is not necessary.

Several items have been implemented that now feature dynamic lighting:
The latest version of the mod no longer supports 1.16!