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Groups > comp.mobile.android > #34347

Re: Auto switching between LTE and WiFi

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In article <slrnntqal2.82t.catwheezel@ID-107770.user.individual.net>,
Whiskers <catwheezel@operamail.com> wrote:

> >> I live in an area where WiFi coverage is spotty and I use googlemaps on
> >> my Galaxy S3 (SPH-L710) a lot.
> >>
> >> Rather than leave LTE on all the time, is there a way to have LTE turn
> >> on automatically when I lose the WiFi signal, and turn off when a WiFi
> >> signal becomes available?
> >>
> >> Thanks.
> >>
> >
> > That is the default action AFAIK but I find that the switchover is 
> > sometimes _very_ slow to take place. If I'm listening to a radio stream on 
> > the phone at home and then walk down to the mailbox at the street the WiFi 
> > drops out when I'm maybe 50 feet down the driveway and the LTE should kick 
> > in immediately but sometimes it takes literally minutes to make up its mind 
> > and often I'm on the way back with the mail and I'm back in WiFi range 
> > before it ever switches. I'd sure like some way to speed up the 
> > decision-making process.
> 
> It's pretty impressive that a streaming media app can handle changing
> the internet connection mid-stream at all, let alone quickly.  After
> all, when you lose the WiFi connection the hardware has to notice, then
> find the mobile phone data service and log in to it and get a new
> internet connection (with a new IP number), then the media app has to
> re-establish its session with the media service (notwithstanding the
> change in IP number and internet connection service) and then pick up
> the stream where it was interrupted.  Then do the same thing in reverse
> when you walk back into range of the WiFi.  

the media app doesn't know because the change happens at a lower level.

> I find that just getting a new mobile data connection working sometimes
> takes minutes.  I've never tried to maintain a 'stream' while changing
> service provider.  I am pleasantly surprised when a mobile data
> connection is fast enough for multimedia to work at all.  Connecting to
> a WiFi router or hotspot or access point usually takes a significant
> number of seconds too, even if no manual log-in is required.

it doesn't take minutes.

it's a few seconds, maybe 5 at the most.

> Is there a setting to keep the mobile data connection 'alive' even while
> the device is actually using WiFi for the internet connection?  That
> should speed up the switch-over somewhat (at the expense of battery life
> and internet charges).

the cellular connection is always alive (unless intentionally switched
off). that's how you can get a phone call at any time, even while on
wifi.

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Thread

Auto switching between LTE and WiFi Alek <alek.trishan@gmail.com> - 2016-09-16 02:33 -0400
  Re: Auto switching between LTE and WiFi Anssi Saari <as@sci.fi> - 2016-09-16 11:52 +0300
    Re: Auto switching between LTE and WiFi Andy Burns <usenet@andyburns.uk> - 2016-09-16 11:53 +0100
      Re: Auto switching between LTE and WiFi VanguardLH <V@nguard.LH> - 2016-09-16 17:50 -0500
  Re: Auto switching between LTE and WiFi crankypuss <undisclosedUserid@gmail.com> - 2016-09-16 04:54 -0600
  Re: Auto switching between LTE and WiFi John McGaw <Nobody@Nowh.ere> - 2016-09-16 13:07 -0400
    Re: Auto switching between LTE and WiFi nospam <nospam@nospam.invalid> - 2016-09-16 14:40 -0400
    Re: Auto switching between LTE and WiFi Whiskers <catwheezel@operamail.com> - 2016-09-17 12:36 +0100
      Re: Auto switching between LTE and WiFi nospam <nospam@nospam.invalid> - 2016-09-17 10:08 -0400
        Re: Auto switching between LTE and WiFi ANTant@zimage.com (Ant) - 2016-09-17 17:09 -0500
          Re: Auto switching between LTE and WiFi nospam <nospam@nospam.invalid> - 2016-09-17 18:37 -0400
  Re: Auto switching between LTE and WiFi Arno Welzel <usenet@arnowelzel.de> - 2016-09-17 16:05 +0200

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