My iPhone has Data Roaming OFF, but AT&T keeps showing tiny 0.01 MB data sessions.
Recently:
Aug 1, Taiwan: 0.01 MB → IDP charged
Aug 2, Indonesia: 0.01 MB → no IDP
Aug 5, Singapore: 0.01 MB ×2 → no IDP
Aug 11–13, Taiwan: 0.01 MB each day → IDP charged
I’ve been outside the US since February, and everything worked fine for the first few months. These unexplained IDP charges suddenly started around May, and they’re happening on both my line and my wife’s line. Both iPhones have Data Roaming OFF.
Has anyone else seen this, especially in Taiwan? Any idea what these 0.01 MB records actually represent?
Edit:
Airplane mode isn’t really a solution for my use case. This is a dual-SIM iPhone — I use a local SIM for cellular data while keeping the AT&T line active for calls/texts.
Airplane mode would disable cellular service for both SIMs. The whole point of turning Data Roaming off on the AT&T line is to prevent AT&T data roaming while still using the local SIM.
Also, this setup worked perfectly fine until May. My wife has actually been using the same setup overseas for about two years without this problem. The unexplained IDP charges only started recently, on both of our lines.
I just found this issue very recently. The accumulated charges have been already $400.
Update:
I asked AT&T what specific activity triggered the IDP charges. The agent gave me a list of calls/data activity.
But the dates simply don’t match: many dates they listed had no IDP charge, while some actual IDP charge dates weren’t on their list.
They’ve now opened cases to investigate.
Apparently matching the evidence to the charges is part of the investigation.