Originally Posted by dankarlinski
Wirelessly posted (White and Nerdy)
As long as the radio is off, you should be fine
This is not completely correct.
In order to fully comply with FAA regulations, the device must have all connections turned off (by using connection manager) prior to the closing of the aircraft door. Following that, the device must be powered down like all other electronics. After passing flight level 10 (10,000 ft.), ten minutes after take off, or when announced by the crew, the device can then be powered on, but all connections must remain off. Ten minutes prior to landing or when announced by the crew, the device must be powered off. On US domestic flights, the device may be turned on immediately after landing and the connections restarted.
This is the only way to completely comply with FAA regulations. Please note that on certain international flights, mobile phone usage may be completely prohibited (regardless of whether the connections are also off) by the destination country's civil aviation authority or the airline. As such, it is important to pay full attention to any signs, placards, video messages or crew instructions when flying foreign-flag airlines or flying to international destinations.