After installing the Res Locaters mod, you can create a locator of the ore that you want to find in Minecraft on your phone, and use it to detect deposits of different blocks.
So far, the author has created only four locators – iron, diamond, emerald and gold. An example of crafting for Minecraft on Android is shown in the screenshots.
As soon as you are armed with this device, you can go in search of ore in Minecraft Bedrock Edition. The locator allows you to see the desired ore through the blocks, which greatly facilitates mining in MCBE.
Locators in the Ores Locaters addon are disposable, so after using it, it will break, and a red crack will appear on its textures. This will mean that the device needs to be updated. Good luck!
Put on before use.