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To improve accuracy and increase your chances of a 
successful calculation, do the following while your 
phone is determining your approximate location:
Stay in the open.
 The GPS feature works best where 
there is nothing between your phone and a large 
amount of open sky. If possible, go outside, away 
from tall buildings and foliage. While performance in 
a building is improved by moving closer to windows, 
glass with certain sun shielding films may block 
satellite signals.
Hold your phone to enhance reception.
 Signals from GPS 
satellites are transmitted to your GPS antenna, which 
is in your phone antenna. Hold your phone away 
from your body, giving the antenna clear access to 
satellite signals. Do not cover the antenna area with 
your fingers or anything else.
Stand still.
 If possible, stand still until your phone is 
finished determining your location. Moving your 
phone at a walking pace while your phone is 
calculating your approximate location may 
substantially decrease GPS performance.
In a car. 
When using the GPS Enabled feature in a car, 
position your phone so that the GPS antenna has 
good access to GPS signals through the car’s 
windows. Typically, the GPS antenna has best access 
to GPS signals in a car when placed near a window.
Stay in network coverage.
 The network will provide your 
phone with information that helps determine your 
location more quickly and accurately.
Updating Satellite Almanac Data
Another way to keep the GPS feature of your phone 
working well is to keep your satellite almanac data up 
to date.
The United States government maintains an almanac 
of data about where GPS satellites are as they orbit the 
Earth. This information is available to your phone. 
Keeping your satellite almanac up to date helps your 
phone determine your location more quickly.
Note
Although moving your phone at a walking pace 
decreases GPS performance, moving it at the speed 
of a moving car does not.