I fly many times per year and never put on Airplane Mode. I never experienced a crash, so….
Researchers at Trinity College Dublin, lead by Professor Doug Leith did a report to determine if Airplane Mode in #GrapheneOS and other devices actually disabled cellular. It doesnt have any cellular transmissions.
https://www.scss.tcd.ie/Doug.Leith/pubs/airplane_mode_report.pdf
There is a radio activity spike at the 2.4GHz band, this suggests Wi-Fi activity and is different from cellular network activity.
All credit to Doug here: https://www.scss.tcd.ie/Doug.Leith/
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