Two remarks about flight MH370

I don’t understand two things about flight MH370:
– If I buy a 150 quid smart phone, it can track me anywhere and everywhere on the planet, all the time, via GPS. And a several-hundred-million dollar commercial airliner does not have a multiple-redundant GPS device? With its own little power supply? What’s the point of all the black boxes if something simple like GPS is not included? (and did none of the passengers accidentally leave their phone on with GPS enabled?)
– The NSA and GCHQ spend billions of tax payer dollars and pounds on watching the porn we download, browsing our texts about where to go for dinner tonight, and listening to us talk about football with our friends over the phone. But they don’t, post 9/11, actually track airliners to, perhaps, see if they are headed towards a skyscraper? Do we need even more damning proof of how useless their programs are?