Compare android handsets for GPS accuracy.
Place four handsets on a nonconductive surface approximately 1 metre above the ground on a sports oval. Run GPS Test and observe the number of satellites and accuracy. Take simultaneous samples by photographing the screens and collect time varying data by filming.
Three handsets reported a position within a few seconds, the Xperia Arc took a few minutes which previous experience shows happens sometimes but not others.
From a sample of 24 simultaneous readings