Network-related setup causing instability on mobile device, any ideas?

Hi everyone,

I’ve been experimenting with some mobile configurations recently while working alongside a few of my small projects, and I ran into something a bit confusing. I followed a guide I found here: https://deltaexector.com/vng/, and while everything initially seemed fine, I started noticing some odd behavior afterward.

My device occasionally loses stable connectivity, and some apps don’t respond the way they normally do. It’s not a complete failure, but enough to interrupt what I’m working on, especially when I’m trying to keep things running smoothly alongside my setups.

I’m not entirely sure if this is related to network conflicts, permissions, or something deeper like compatibility issues. Has anyone here dealt with something similar when testing configurations on mobile devices? I feel like I might be overlooking something simple, but I can’t quite figure it out.

Would really appreciate any insight or suggestions from those with more experience. Thanks in advance!