Sharing Wifi

That "other" iphone must be set up as follows:--> Share your Wi-Fi password from your iPhone, iPad, or iPod touch - Apple Support

Regards

Giulio

Want to change my Apple ID password some device is linking to me via hotspot or something. Don’t you need logged into same AppleID to accomplish this? I see the chain link in WiFi connections. Nothing should be connected to me. My iPad does not have current service setup to it. Can somebody be stealing my data or info when connected like this?

That's a totally different problem. Please open a new discussion to get appropriate answers.

Thanks and regards

Giulio