Old (ca. 2011) notes on improving geolocation for mobile devices/web browsers.

geolocation-cross-platform.txt

1. iPhone
* Make sure you have a strong signal and good coverage
* Enable Location Services for Safari in the Settings menu
* Make sure to allow the geolocation when prompted.

2. Android.
* Make sure you have a strong signal and good coverage
* Some devices, such as some versions of the Galaxy S, are known to
have geolocation problems.
* From the device settings menu, make sure the following settings are available
** Location & Security > Use wireless networks
** Location & Security > Use GPS Satellites
** Privacy > Use My Location
* Make sure to allow the geolocation when prompted.

3. BlackBerry
* Make sure you have a strong signal and good coverage
* Ensure that Geolocation permissions are enabled. Depending on your
device, that might be in one of the following locations in the system
menu:
Options > Applications
Options > Device > Application Management

* It might help to choose Refresh GPS from the device settings.
Depending on the device, this might be available in one of the
following locations in the system menu:
Options > Advanced Options > GPS
Options > Device > Location Settings
* Make sure to allow the geolocation when prompted.

* See BlackBerry's help page: http://www.blackberry.com/btsc/KB11950