[Replicant] No mobile network suddenly

[s at mnoble.net]

On Sat, Apr 15, 2017 at 07:29:05PM +0200, Tomas Nordin wrote:
> Hello Replicanters
> 
> I have Replicant (4.2) on a Samsung S3 GT-I9300. Yesterday I lost the
> mobile network connectivity. I have tried my SIM-card on another device
> and it worked, vice versa I tried another SIM-card on my phone and it
> did not work.
> 
> There is some confusing behavior of the airplane mode. After a reboot
> for example, the menu I get by holding the power button has a menu item
> claiming that airplane mode is on. At the same time WIFI and Bluetooth
> is on. It can be toggled to say off on that menu-item. During this time
> airplane mode is not reported on by other menus like the pull-down menu
> or the item found through the Wireless & network settings.
> 
> Also, while I have airplane mode not reported ON anywhere, when trying
> to make a call despite I can see there is no network (in the
> notification area on top), I get a message saying "To place a call,
> first turn off Airplane mode."
> 
> I have no idea if the airplane mode behavior has anything to do with the
> problem or is it an effect of the problem.
> 
> Is somebody here able to help me trouble shoot this?
> 
> Best regards

Yeah, airplane mode is pretty wonky with the replicant ril (radio
interface library)

I've found turning off airplane mode, followed by a full reboot will
usually get it going again.

You also probably want to learn how to how to restart rild manually,
that often helps if say you've driven out of your service area. 
You can do it from a command line with something like:
$killall rild

But I find it's easier to use OSmonitor where you can long press on the
process and choose kill from the context menu.

-- 
sam