Why world data is not transferring

I fixed mine, but I had to delete all my saved data and start over with transferring worlds. It's working now.

Why not just transfer all the data over to an external hard drive and you can plug the data into any console.

Not from the memory stick. You would actually transfer the save data through the game. You can find instructions on how to do so here - https://help.mojang.com/customer/en/portal/articles/1797629-transfer-minecraft-worlds-on-xbox-consoles

Could that be the problem why I can’t host multiplayer worlds, using cellular data?

@ Lukedawg235

What do you mean by "Fix your **** Microsoft" I mean there is nothing for them to fix, and I'll explain why.

I imagine you like games like GTA5 (you mentioned so I'll use that game) you like having huge worlds to explore and good graphics? well to achieve that the developers require a huge amount of data to transferred between the disc and the memory. Modern disc
drives (Blue Ray, DVD etc) just cant transfer that amount of data fast enough, so the only solution is to copy the entire disc onto the internal hard drive (which can transfer data much much quicker)

So, you basically have two options, either drop the Xbox One and go back to playing games on the 360, or go to cartridge based consoles (3DS or the new Nintendo Switch)