Re: [android-developers] Re: Can GPS work without internet access in Android phone?

Cold starts can take up to 15 minutes...

Did you wait 15 minutes...

On Sun, Oct 30, 2011 at 11:17 PM, Kenneth WON <kennethwtn@gmail.com> wrote:
> Hi, lbendlin,
>
> Thank you for your reply.
> I am really facing this issue.
> When I turn off the Network (WiFi and/or cell network), the app cannot
> obtain (GPS / A-GPS) position.
> Then I turn the network on, it can get the (GPS / A-GPS) position
> successfully.
> What's wrong?
>
> Thanks and Regards,
> Kenneth Won
>
>
>
> On 10月31日, 上午8時30分, lbendlin <l...@bendlin.us> wrote:
>> GPS can work very well without internet access - after it got the first
>> fix.  The internet access is used to download satellite position data to
>> the GPS receiver which speeds up the TTFF (time to first fix).  Without the
>> extra help the first fix can take quite some time, especially when you are
>> already moving.
>>
>> Go to a location with unobstructed sky view and let the GPS receiver get a
>> fix. Then check how it performs on subsequent fixes.
>
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