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原理係一樣, 但用手機又無 data, 咁可來GPU signal 呀?? 妳指嗰啲GPS build-in 咗個 chips 可以收 signal, 唔係妳以為係點用到?

cell phone use data to get signal? then I should better buy a GPS from store....

the big difference is that google maps does not load the whole map on your phone. other "gps app" such as the ones by Tom Tom or Magellan, it loads the whole US map (or Canada map depends on which you u purchased) on your phone, so that it does not requires cellular connection at all.  I used that before when I went to Canada with roaming and cellular off.  But then my phone was jb so the app was free,  otherwise, it costs about $60.

no no, it uses the gps chip separately.  your phone can be offline and still use the gps.  I used a free offline map app and it was able to locate where I was (in toronto, with roaming and cellular data off).

System message: ultraegg changed topic to '奇妙樂園之行'

4個家庭6個細路.....

咁 happy?

going to toronto zoo?

wonderland i guess