Why is IP lookup accuracy so inconsistent for mobile users after our initial geolocation fix?

Hey everyone, we recently managed to sort out that initial quick geolocation issue we were having, thanks to some great advice here. That was a huge relief! However, we've hit another snag, and it's specifically around IP lookup accuracy, particularly for our mobile users. It's proving to be quite inconsistent. For desktop users, everything seems pretty much spot on, which is fantastic. But when it comes to mobile, the results vary wildly. We're seeing huge discrepancies between users on cellular data versus Wi-Fi, and even across different mobile carriers within the same geographic area. It's almost like the mobile IP resolution is failing to pinpoint their actual location reliably, often placing them miles away from where they actually are. This inconsistency is really impacting our ability to provide localized content and services effectively to a significant portion of our user base. We're using a pretty standard IP geolocation API, but it just doesn't seem to handle the nuances of mobile networks well. I'm wondering if anyone else has faced similar challenges with mobile IP resolution and what potential causes or solutions you've found? Are there specific types of APIs or methods that are known to be more accurate for mobile devices, or perhaps strategies to combine IP data with other signals (without getting into privacy issues, of course)? Any insights on why mobile IP data specifically struggles with accuracy compared to desktop would be incredibly helpful. Thanks in advance!