Comment 8 for bug 1604446

worth noting that the last known position isn't an estimate of where you are with low and decreasing accuracy (like a cell tower position is), where you have a rough position and an error radius, so you are in that circle with some kind of probability distribution on where you can expect to be found. It is a high accuracy position of where you have been at some point in the past, beyond a few minutes old it really is a very bad thing to store and return - it isn't an approximation of the current position.