Whenever I try to connect to a battle in Splatoon, it just says "failed to connect to partner's device.”

[Wade_Studios5020]

everything was going fine, I got into a battle. finished it. now it just says that. error code: 118 0502.

[PizzaPizza72]

I think this means you are not finding a lobby, unless you’ve tried multiple times.

[Wade_Studios5020]

I have tried multiple times.

[GamersInternatio]

Can you just check your NAT type quickly? It’s most likely what @PizzaPizza72 said but I just want to double check.

[Guide] Detecting your NAT type on Wii U and 3DS consoles

[Detecting NAT type on Wii U and 3DS (Guide)] Before I begin, I would like to thank @piplupness and @PN_quarky for helping me test this, as well as some initial information posted by @numerofoxtheglaceon_ on Pretendo’s Discord server. I initially started working on this after information was very vague on how to decode a code that the Connection Test outputs, all I had to go from when I started was a message on a Wii homebrew forum. This is by no means complete yet, we still don’t fully know…

[Wade_Studios5020]

it says support code 120-000.

[PizzaPizza72]

Looks like you have NAT type B.