Originally Posted by
javabytes
Delta’s in-flight messaging is for internet messaging only (iMessage, Facebook Messenger, WhatsApp), not SMS, and you must be connected to the Wi-Fi to use it.
If you had one bar of cellular signal showing, it sounds like you forgot to put your phone into airplane mode and it momentarily contacted a ground tower.
Doesn’t the Wi-Fi calling thing turn on anyway for some in airplane mode when connected to Delta’s in-flight Wi-Fi and thus get SMS that way anyway?
On WED 6/8 i was flying on DL 1104 from, JFK to LAS, my cellphone was NOT connected to Wi-Fi,in mid flight my iPHONE was in my shirt pocket signaled that a text message had been received, four attempts to respond failed.
I noticed there was one “bar” showing which then disappeared for the rest of the flight.
I was under the impression that cellular only worked via Wi-Fi while flying.
Sometimes natural conditions or other circumstances are such that RF signals momentarily reach more extreme distances than commonly typical.