i wanna ask...

i'm using nokia 5800 with garmin version 5.00.40s60.9-ASN
when not inserting the sim card...i only have 1 signal bar
when insert..also same but when i ENABLE A-GPS....my garmin works fine...

so, how can i use free gps if i only can use it when ENABLE A-GPS??

pliz help me....TQ