[SailfishDevel] lock JP01 on 4G, is it possible?

Slava Monich slava.monich at jolla.com
Thu Apr 20 15:41:49 UTC 2017


Hi Claudio,

I would say update to 2.1 first. 2.0.5 is missing some packages that the 
latest ofono build depends on.

After giving it a bit more thought, I'm leaning towards not merging this 
one but instead extending the api in such a way that would allow 
selecting an arbitrary combination of technologies.

Cheers,
-Slava


>
> Hi Slava,
> I am interested in testing your solution. Does it work on SFOS 2.0.5 
> or do I have to upgrade to 2.1 first?
>
> Also, how do I apply the patch? Is it possible to have it as 
> patchmanager patch in openrepos?
>
> Lastly, does the patch also work on 3G (means, it strictly allows only 
> 3G)?
>
> Thank you
> Claudio
>
> ------------------------------------------------------------------------
>
>
> Message: 1
> Date: Fri, 14 Apr 2017 20:36:50 +0300
> From: Slava Monich <slava.monich at jolla.com>
> To: devel at lists.sailfishos.org
> Subject: Re: [SailfishDevel] lock JP01 on 4G, is it possible?
> Message-ID: <b3463e0e-f3af-df3e-af7e-16523fc59b0a at jolla.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi all,
>
> This should allow to force the use of the particular cellular technology:
>
> https://git.merproject.org/mer-core/ofono/merge_requests/112
>
> Obviously, there's no UI for this option and there won't be any time
> soon, but once this patch is merged, you will be able to enable it from
> the command line like this:
>
> dbus-send --system --print-reply --type=method_call --dest=org.ofono
> /ril_0 org.nemomobile.ofono.SimSettings.SetStrictTechnologySelection
> boolean:true
>
> The option survives the reboot and the value is stored on a per-SIM
> basis. It would be nice if somebody could give it a try and let me know
> (preferably by commenting on the merge request) if it does indeed help.
>
> Cheers,
> -Slava
>
> > Prefer 4g used to be 'lteumts' so with 3g, maybe 'lte' worked to 
> restrict to 4G as callback switching didn't work and now it no longer 
> works as before, so you'll have to be happy with 3g because they fixed 
> it (jk, but wouldn't be surprised, edge cases get forgotten once they 
> figure out the popular case)
> >
> > On Thursday, 13 April 2017, E.S. Rosenberg wrote:
> >> On my JP1 "Prefer 4G" in the network settings means that when 4G is
> >> available and I'm not making a call/sending an sms I am on 4G.
> >>
> >> I never thether WiFi though so don't know if that would work, 
> usually use
> >> USB tethering so that it's charging and not finishing the battery 
> so fast.
> >>
> >> 2017-04-13 16:10 GMT+03:00 szopin <szopin at gmail.com>:
> >>
> >>> check https://git.merproject.org/mer-core/ofono/blob/master/ 
> <https://git.merproject.org/mer-core/ofono/blob/master/>
> >>> ofono/doc/radio-settings-api.txt
> >>> it still says lte is for lte only, maybe a bug, or maybe a feature 
> with
> >>> callback switching, on j1 it used to block any call functionality, 
> might've
> >>> been undesired behaviour, no idea (I had a similar situation like 
> you and
> >>> wanted 4g only and it used to block any 2-3g connections, maybe it was
> >>> dropped)
> >>>
> >>> On 13 April 2017 at 14:13, Claudio Campeggi <claudio.campeggi at studio.
> >>> unibo.it> wrote:
> >>>
> >>>> Hi,
> >>>> thank you for your replies but the command you provided doesn't work.
> >>>> I do know that I won't be able to receive calls, but on 3G I 
> barely get 5 megabits whereas on 4G I get always 10 megabits or more, 
> not to talk about the amazingly low latency on 4G compared to 3G.
> >>>> I want to force JP01 on 4G as once I start wifi tethering it 
> won't automatically go to 4G, and I do know that there is 4G coverage 
> in that place (as I wrote, better walls penetration on 800Mhz)..
> >>>>
> >>>> Regards
> >>>>
> >>>>
> >>>> Yeah, ppl calling you would get busy signal (and no text from 
> your provider to tell you about it), it doesn't work on jollac,and 
> since radio switcher was mentioned as no longer working no idea if it 
> still does
> >>>>
> >>>> On Tuesday, 11 April 2017, E.S. Rosenberg wrote:
> >>>>> * The dialog in System Settings should be enough, it should be 
> noted though
> >>>> *>* that LTE did not usually support voice calls so when you are 
> making the
> >>>> *>* call the phone always needs to switch back to UMTS (things 
> may have
> >>>> *>* changed).
> >>>> *> >* 2017-04-10 16:25 GMT+03:00 <szopin at gmail.com 
> <https://lists.sailfishos.org/cgi-bin/mailman/listinfo/devel>>:
> >>>> *> >* > This should force lte (calls will most likely be 
> disabled, change 'lte' to
> >>>> *>* > 'any' to switch back):
> >>>> *>* >
> >>>> *>* > dbus-send --system --print-reply --dest=org.ofono /ril_0 org
> >>>> *>* > .ofono.RadioSettings.SetProperty string:"TechnologyPreference"
> >>>> *>* > variant:string:"
> >>>> *>* > lte"
> >>>> *>* >
> >>>> *>* > (or at least this used to work in 2014)
> >>>> *>* >
> >>>> *>* >
> >>>> *>* > On Monday, 10 April 2017, Claudio Campeggi wrote:
> >>>> *>* > > Hi,
> >>>> *>* > > in the past I used the Radio Switch app (on warehouse) to 
> lock my JP01
> >>>> *>* > > on 4G network (it seems that if 3G signal is low sailfish 
> doesn't search
> >>>> *>* > > for 4G networks, but in my area 3g is 2100MHz and 4g on 
> 800MHz, so it
> >>>> *>* > > penetrates the building walls way better), but a while 
> ago the 4G mode
> >>>> *>* > > stopped working because the bash command use was no 
> longer working.
> >>>> *>* > >
> >>>> *>* > > I'm writing to know if it's still possible with a new 
> bash command to
> >>>> *>* > > lock the phone in 4G only mode, and if so how.
> >>>> *>* > >
> >>>> *>* > > I do know there is the "more network modes" patch but I 
> would like to
> >>>> *>* > > avoid to use patches.
> >>>> *>* > >
> >>>> *>* > > Thank you
> >>>> *>* > >
> >>>> *>* > >
> >>>>
>
>
>
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