GNSS chipsets found in mobile phones are a technological wonder. Not only do they occupy a few mm2, draw a handful of milliamps from the battery and possible share the die with another systems such as WLAN, Bluetooth or NFC, but also they implement very advanced processing techniques to be able to operate with meter-level accuracy in very adverse conditions caused by interferences from other components of the phone, poor visibility of the satellites, use of very simple antennas, rich multi-path propagation, etc. The paper will present the performance of these GNSS chipsets in benign environments as a heart-warming surprise.