Mob spawning

I think this is working as intended. Spawn rates in Bedrock Edition is very low that's why there is a very small amount of mobs spawning.

Do you know any way to spawn more mobs, my phone can hadle it, I'm about to make natural hostile mob farm and I didn't work even in the deepest and darkess part of the area

Sorry, but I don't know how. But I think you should watch gnembon's explanation on mob spawning in bedrock edition.

If I understand right, because of the way we got screwed over when Mojang completely changed the spawning mechanics, the only way to get a dark-room natural-spawn mob grinder to work is to light up every single inch of surface, cave, and tiny hole in the ground for a massive distance in every direction so mobs literally have nowhere else to spawn. And even then the rates will be garbage.

I don't know why they didn't just leave well enough alone. It worked perfectly well before. All the changes did is break every single mob farm known in the game and piss off the entire community. And they refuse to accept or recognize that there is a problem.

They should add an option to activate or change spawn rate of each world, they just focused to the people who have "not that great phone" ,while some of us have a phone that can handle it

This is a duplicate of MCPE-21856

There is information in the thread. Long story short, they are currently in the process of rewriting the spawning mechanics to make it work for people who have strong machines while not destroying performance on weak devices. Quote from Helen (full message is on that issue):

"Mob spawning on Bedrock has been tweaked multiple times and we are in the process of rewriting all the code. It is difficult to find a "sweet spot" where PC players think there's enough spawning without mobile players saying there is too much spawning."

In the mean time, if you light every spot outside of your farm for several chunks, mobs do spawn. Not as much as they do in Java, but enough to make a mob farm profitable.

Do you have a downloadable map that I can borrow? I tried it to my creative mode world but it doesn't work

Lighting up everything around the natural spawn tower in my main world is not particularly feasible. It's an old world and looks very much like an ant farm underground... It's a swiss cheese of tunnels and meandering caves, mineshafts and enormous caverns. To the point even walking on the surface you have to watch your step or you might fall into a chasm. The core of the world is five years old and I'm still finding caves and holes I didn't even know were there.

That you jerks at Mojang took away the x-ray machine trick is not helping matters any.

Not at this moment. I was using a slightly modified (and much smaller) version of the farm featured in Mumbo Jumbo's video, which is liked from the mob farming tutorial page in the wiki. However in my world I t is in an area that has bunch of tiny cave holes filled with mobs, so it doesn't work at all currently. I'm currently in the process of moving to a new spot that is surrounded by ocean on 2 sides, and I can see quite a bit of mobs spawning at night, yet I don't have a mob farm built there yet. You can try building that design in a creative world and see how it works. For survival being near or in the ocean helps with avoiding caves, or at last limits the amount of caves you'll have to find. The approach in your screenshot is not going to work, because by being in the dark room, you make the most of the room not spawnable, as the mobs cannot spawn within 24 blocks of your character. 

Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-21856.

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