Galaxy 5: GPS always stops working after phone has been in standby
I haven't tried this myself but the following supposedly helps in getting a faster lock for Samsung's Galaxy range of Android devices.

Make sure GPS satellite and Wireless networks has been activated.

Press *#*#1472365#*#*. This will bring up GPS settings.
Settings -&gt; Parameter Settings -&gt; Address -&gt; Server Type: 1x MPC
Settings -&gt; Parameter Settings -&gt; Position mode: option3
Settings -&gt; Fix Request Settings -&gt; Session Operation: Standalone
Settings -&gt; Fix Request Settings -&gt; Server Option: Local
gpsOne XTRA -&gt; Xtra Enable: Enable


Then try with Google Maps.

If you want to go back to the default setting:

Settings -&gt; Parameter Settings -&gt; Address -&gt; Server Type: UMTS SLP
Settings -&gt; Parameter Settings -&gt; Position mode: option2
Settings -&gt; Fix Request Settings -&gt; Session Operation: MS-based
Settings -&gt; Fix Request Settings -&gt; Server Option: Default


See if that helps. Other users have also reported issues with the Galaxy range of not receiving SMS messages immediately after returning out of Airplane Mode. Seems a touch buggy...