Phones that are capable of using GPS (Global Positioning System) will have several different methods of positioning. You can select which positioning methods you use by going to Menu> Tools> Settings> General> Positioning> Positioning Methods.

1. Integrated GPS - This refers to a phone's built in GPS receiver. GPS satellites continuously transmit their location relative to the Earth, and your phone's GPS receiver can calculate its own position if it knows the position of at least three satellites. Today, almost all N- and E-series phones have integrated GPS, plus a selection of 6xxx phones.

2. Bluetooth GPS - If you do not have integrated GPS or you wish to improve GPS reception, you can connect your phone to an external GPS receiver device which can replace or complement Integrated GPS.

3. Assisted GPS - This is a network-based service used to help fix a GPS position. When using this, small amounts of data are transmitted so you need a network-based internet service from your network operator for which you may be charged by the download volume. Only small amounts of data are involved, but you should take care using this feature if you are travelling outside your own country as roaming data charges can be high.

4. Network-based - whenever your phone is switched on and in range of your operator's network, it knows which base station (commonly known as the transmitter or mast) it is connected to, and using that information it can approximate your position using this network data. This is an additional help in obtaining a GPS fix, and it also makes a brief data connection.

Recommended to use (1) and (3) only chargeable of RM0.10 cents per connection for normal plan user and Free for unlimited data plan user.

A number of factors can affect your phone's ability to obtain its GPS position:

- First time use - Fresh out the box, it may take 15-20 minutes for your phone to get its first ever GPS fix, longer in extreme cases.
- Built-up areas - if you are in a city with many tall buildings, they may interrupt the signals from the GPS satellites and make it harder to obtain and maintain a fix.
- Weather - adverse weather conditions, particularly heavy cloud, can affect the strength of the GPS signals getting through from the satellites.
- Receiver location - Do you own an N95 or N95 8Gb? Your GPS receiver is under the keypad, so ensure you always have the slider open when using GPS.
- Your Windscreen - Heat-reflective (athermic) windscreens common in Citroën, Peugeot and Renault cars can interfere with GPS signals, as can windscreen heating elements often found in Ford cars. If you have one of these, an external GPS receiver or signal booster can be very useful.

For us to getting the first GPS location fix, there are 3 requirement need to be fulfill:

1. The time the message was sent
2. Precise orbital information (the ephemeris)
3. The general system health and rough orbits of all GPS satellites (the almanac).

To simplify its meaning:
1. The time on ur devices and the time of the satellite
2. The satelite actual time data (need to keep the devices syn with the satellite)
3. The satelite orbits location at certain time (how many satellite will possible visible by the devices)
GPS fix steps:

1. During the cold GPS device startup (devices reboot), the phone dont have all 3 data and it will try to scan through all 32 GPS satellite signal signature (that's why an open space needed to let the phone detected as many satellite as possible)

2. The phone then will download all those available satellite signal and do calculation (no.2), this is where the a-GPS come in handy where if u let it connect to our sp 3g then the phone will just send a msg to the sp 3g tower and request the (no. 2) data, where all those 3g tower will report it's location to the Nokia / Google positioning server and download the rough location on the GPS fix then the tower will send this (no. 2) data back to our phone.

3. If no A-GPS then the phone will have to download those (no.2) data manually (mean very slow) and I can tell for those a few bytes satellite data will need to take about 10mins with the satellite signal strength about full (mean if u open the Garmin satellite status those bar need to hit about full bar) if the satellite signal strength are lower (mean less then full bar) then the signal data accquiring will take up 15mins~30mins to be downloaded (same a few bytes data) for ~4kb we can get all 32 satellites (no.2) data.

4. Once the (no.2) data downloaded the signal bar will turn to solid (a fix already capture) and the phone already can syn with the satellite.

5. Remember all those satellite signal will need to collect 1 by 1 (although run at parallel) if no A-GPS enable.

6. If got A-GPS then ALL 32 satellite (no.2) data will be provide by the supp. server (~4kb) and your phone will able to lock every satellite that come in view.

Those (no.2) data wont be delete as long as ur phone not reboot. and everytime u open the GPS apps the same data will be use back and the phone only do minor calculation and can get the fix, this wont work out if u reopen after a few hours because the satellite previously lock already out of sigh (all satellite orbiting very fast)

So now you know where although we seen got a FULL BAR for the satellite strength but still cant get a fast fix, it's because the satellite manual downloading through the GPS chip are VERY SLOW (a few bytes will need 10 minutes to be completed).
DO NOT MOVE AROUND WHEN YOU DO THIS!

1.  Shutdown ur phone
2.  Reboot the phone
3.  Go to an open space
4.  Disable the a-GPS and network under the LOCATIONS apps
5.  Run Garmin XT
6.  Go into the the satellite status view screen (in Garmin)
7.  Start ur timer and observe those FULL BAR satellite (strong signal)
8.  At least 4 satellites needed for Garmin to start calculating minimum requirement.
9.  Wait till the bar turn to solid (anyone of it).
10. Stop ur timer.

Sometimes lucky and might get a faster time that's because it' not sure a reboot will 'confirmed" deleted the satellite cache (No.2) data or not but for a cold start it can make sure you will able to lock the GPS in 10 minutes for a single satellite (the signal strengh must be high).

Contributed by sklchan

Nokia OVI Maps - Free Navigation Edition


Requirements & Recommendations
- Uninstall any previous version Nokia Maps / Nokia OVI Maps.
- Delete the entire existing CITIES folder from memory card.
- Deletion of above folder is because this new version not compatible with old map structure.

Official Downloads

Alternate Downloads

Address Finding & Detailing Tips

Migrating Handphone Device

Address Finding Issue After Installation

Nokia OVI Maps Online & Offline Map Searching Issue

Voice Copy Guidance

Space Saving On Nokia OVI Maps

Garmin Mobile XT GPS is a rich, full-featured navigation application with 3D maps, simplified user interface, and advanced features such as saved routes and tracks, with one time purchase; no monthly fees and Garmin Online services for real-time traffic, fuel prices, weather, and hotel rates.


How To Install Garmin XT Mobile?

Important Update Links

Why Cant Select Built In / Internal GPS In Garmin XT Mobile ?

Device Unlock Code For Garmin XT

What & Where The Free Maps Available For Garmin XT Mobile?

Which Map Better? Malfreemaps (MFM) or Malsingmaps (MSM)?

How To Change My Map To Latest One or Change To Other Map?

Using Two Maps For Garmin XT Mobile?

Garmin XT Mobile Battery Draining Issue

Garmin XT Battery Drain Issue Tips - Garmin XT Mobile Battery Draining Issue

Special Garmin Voices

Garmin Mobile XT Custom Splash Screen

Address Finding & Detailing Tips

Migrating Handphone Device

My Locations Backup & Restore

Garmin XT Corrupted Reinstallation

Garmin XT Mobile Light Edition

Changing & Replacing Garmin XT Mobile Fonts

Latest Downloads 25-01-2010 - Please Bookmark This Section As Updates Are Often !

Gorjess