My pocket edition minecraft isn't letting me accept other peoples minecraft game invites

Well we need to start somewhere.

Are you signed into a Microsoft Account on the mobile version of Minecraft to begin with?

Also, would it be possible to get a screenshot/picture of the error message. The Xbox forums do work in a mobile browser, so as long as you sign in you should be able to respond to this thread with that image so we can help with the specifics.

https://support.xbox.com/games/game-titles/minecraft-version-differences

Playing Minecraft between devices and platforms

You can play Minecraft: Windows 10 Edition with other devices running Minecraft: Pocket Edition, such as Windows 10 and Windows Phone devices.
If you have Minecraft: Apple TV Edition, you can play locally with other players running a version of Minecraft: Pocket Edition. Visit Minecraft: Apple TV Edition overview
for more info.

Minecraft: Xbox 360 Edition can only be played with other Xbox 360 consoles on Xbox Live. The Xbox One edition can only be played online with other Xbox One consoles. There is no cross-platform play between the Xbox editions and other editions of Minecraft.

I would think that lies in specific permissions for the realm? I would guess that it's not a setting on the Microsoft account itself, but how the realm is secured. I don't have a lot of first hand experience in this, but take a look at settings for the
realm? Maybe invite yourself to the realm?

Another thing to check would be what edition of Minecraft it is for the "Pocket Edition"? I'd check if there is a proper Minecraft edition on iOS which might cause the issue, as opposed to the Xbox One edition being the cause, it could be that there is
a Minecraft (bedrock edition) which would be cross-platform, and not the "Pocket Edition"

Let us know if that doesn't seem to be the case and we can see some other steps for investigation.

Looked through some of the help articles - man the information is confusing.

Anyways from what I'm inferring from the posts is that you can play Windows 10 to Windows 10, and Pocket Edition to Windows 10 and that's it right now.

https://support.xbox.com/en-CA/games/game-titles/minecraft-help-on-different-devices

"You can play Minecraft: Windows 10 Edition Beta with other devices running Pocket Edition, such as Windows 10 and Windows Phone devices. Right now, you can play local multiplayer on Minecraft: Windows 10 Edition Beta. Soon after the launch, online
play will be available for Minecraft: Windows 10 Edition Beta."

http://support.xbox.com/en-CA/games/game-titles/minecraft-windows-10-edition-beta-faq#a5eebb2f431442ff850f552a209f44ed

Can I play online with other people on Windows 10? Or on different devices?

You can play with up to four other people running Minecraft: Windows 10 Edition Beta or Pocket Edition on your local network. You can also play online with up to four of your Xbox Live friends in online multiplayer gaming.

Hey there Queenie Brea,

To clarify, the Windows 10 Beta is actually a version of the Minecraft Pocket Edition. And the only other games you would be able to join would be users who are also using a version of Minecraft Pocket Edition. You can find more information on the official
support page
here.

It's not possible to play others who are using an Xbox 360 or Xbox One version when using the Windows 10 Beta.

To play with others on Pocket Edition you'll either need to be playing using Local Multiplayer or have a Minecraft Realms account and you can learn more about that here.

Minecraft Realms

I hope that answered your question, please let us know if you have other questions regarding it.