Interesting, I also noticed that my altitude was 52m +/-6m, when in fact it is 20m ASL. (Android X10iii is reporting 48m)
Also it appears that Flightmode disables GPS regardless of the gps icon. (Android GPS still works as expected)
I did hope GPS had improved but seems not.
So I restart both phones next to each other, and inside the house. Data is turned off, flight mode on Android. (so there cannot be any assisted gps)
The Android took <90 secs to get lock. Most of that time was taken to find satellites. Once it had found ~10 sats, it had a position fix within seconds.
SFOS 4.5 took less time, ~20secs, to find 22 satellites. But it then took a total 320 secs to get a position fix.
This is the usual issue: it can see lots of sats but is very poor at getting lock.
Also interesting, Android is reporting using 14/17 sats, while SF reports using 6/33 sats