[Question] How to enable cellular connection using terminal?

[BigB]

Introduction

Hi, I wrote few scripts that reconnect user to configured VPN in specific situations e.g. when wifi is off it enables it.
I would like to do same thing with cellular data. Unfortunately I can't find out what is the command for it. I tired some nmcli commands with no success.

Question

Is there possibility to enable cellular data using terminal without sudo?

My Tries

1

nmcli device connect ril_0

Error: Filed to add/activate new connection: Message recipient disconnected from message bus without replying

2

nmcli connection up ifname ril_0

Error: Connection activation filed: The device 'ril_0' has no connection available for activation

3
When you type nmcli c show the gsm is assigned to device field and it looks like something that shouldn't be shared in Internet

nmcli c up /xxxxxxxxxxxx/xxxxx

Error: connection activation filed: No suitable device found for this connection.

4

nmcli monitor

Then I clicked switch to enable cellular data, output:

ril_0: disconnected
Networkmanager is now in the 'connecting state'
ril_0: connecting (prepare)
ril_0: using connection '/xxxxxxxxxx/xxxxx'
rmnet0: device removed
Connectivity is now 'full'
'/xxxxxxxxxxxxxx/xxxxxx' is now primary connection
Networkmanager is now in the 'connected' state 
ril_0: connected

So how we can do all above steps manually?

Solution

here will be the solution

First post changelog

• 2020.08.21 - issue creation.

[Capsia]

@BigB Hi, afaik NetworkManager doesn't manage cellular connection in UT, you should probably try with ofono / rild.

[garyn4]

@Capsia said in [Question] How to enable cellular connection using terminal?:

ofono / rild

Hi, interesting too, my cell phone loses the connection to the cell network.

[BigB]

@Capsia Thank You!

I'll continue searching but now with proper tools.
For more advanced users maybe this or this will help - Especially this part of article: "Here is an example script of modem initialization:(...)"