Some of my friends crash their minecraft app when they join my world (after a few minutes)

Is this only happening on a Dedicated Server, realms or multiplayer? What plaform are you using?
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Android

When they open the Minecraft app with the wifi is on, it's just crashes

This is a LAN 

Thank you for your report!
We're tracking this issue in MCPE-145957, so this ticket is being resolved and linked as a duplicate.

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