Originally Posted by
DWFI
And Henky: That may be true, but in the US I cannot use my phone in customs, baggage hall, immigration, etc. Maybe I have to be on a call immediately after landing also, so in true time it might be 1 or 2 hours after landing that I can get to check my email again. (well, read, because my phone does that for me

)
If you are really that important you get off the plane, answer your mails etc before you get to customs. Period. It really is that simple.