This report describes the results of a brief investigation, as to whether enabling airplane mode on a mobile phone disables all cellular transmissions.
In summary, we found no evidence of cellular transmissions when airplane mode is on.
The mobile handsets studied were:
- Pixel 8 (running GrapheneOS/Android 15),
- iPhone 15 (iOS 17.1.1),
- Samsung A23 (Android 13),
- Xiaomi Redmi Note 11 (Android 11)
See report by DJ Leith and D Malone, Trinity College, Dublin, Ireland from the 18th of Spetember 2025:
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