Lte ***SIM ERROR***

Software SW help
1

Hi,
A few days after update to 3.7, the Lte connection stopped working.
Gcom provides the following output:

gcom -d /dev/ttyUSB2
 **SIM ERROR***
Check device port configuration.
Check SIM is inserted
Test SIM in a mobile phone?

Uqmi provides the following output:

uqmi -d /dev/cdc-wdm0 --get-signal-info
{
	"type": "hdr",
	"rssi": -125,
	"ecio": 5,
	"io": -106,
	"type": "wcdma",
	"rssi": -73,
	"ecio": 14

To me it seems, based on this that the provider does not provide any Lte signal. I called them but they said they are not aware of any problem in the area and they also said that the sim card is registered with the network even if gcom reports error.
Nevertheless the quality of the “wcdma” signal seems good enough.

I am trying to pinpoint the problem but I am not close to the router to test the sim card.
I am wondering if i need to change any modem settings in order to connect with “wcdma” and not Lte signal.

2

Yesterday I tested the card which worked fine in a mobile phone but at a different location.
It seems like a provider/network issue. I will test again at the original location.

3

Yesterday I tested the card which worked fine in a mobile phone also at the original location.
After the test, the card was inserted in turris omnia but i still get SIM ERROR.
I will ask for a new sim card and test again.
The card from a different provider works fine

4

Hi, same issue here, did you get it working?

5

I tested with another SIM, it worked. But both SIM work on a smartphone. Seems like some SIM cards are not compatible???

6

I did not have the time to test again. I will probably do so next month. Though, the card from a different provider works fine since.

7

I found out the SIM was defective. I got it replaced, now I’m waiting for the new SIM to be activated. I’ll let you know.

8

Now that the new SIM card is activated, it’s working!
I think the SIM slot is sensible, the previous SIM card I used was a nano SIM I put back in its mini SIM adapter. The one I’m using right now has never been put out of its mini SIM adapter.

9

Same here. New sim card works for 10 days now.

10

And error again. Seems like the modem is burning the SIM card after some time…

11

A contact on Twitter told me that 2 types of SIM cards exist: 3 volts and 5 volts. Depending on the device, 5 volt SIM cards could be incompatible with some cellphones (and modems by the way). Could someone from Turris team confirm that both types of SIM card are compatible?

12

Hi,
just to be sure do you have LTE pack from us?

There shouldnt be issue with those 2 types of SIM cards, but if you don’t have passive cooler on Quectel EC20/EC25 then it could be a problem.

13

An issue without the passive cooler? The device is running pretty cold, so I don’t see the point.
I changed the SIM card, no PIN code, uqmi et gcom seems to work correctly, but I can’t bring the interface up:
Dec 17 14:46:00 turris pppd[9327]: pppd 2.4.7 started by root, uid 0
Dec 17 14:46:01 turris chat[9349]: abort on (BUSY)
Dec 17 14:46:01 turris chat[9349]: abort on (NO CARRIER)
Dec 17 14:46:01 turris chat[9349]: abort on (ERROR)
Dec 17 14:46:01 turris chat[9349]: report (CONNECT)
Dec 17 14:46:01 turris chat[9349]: timeout set to 10 seconds
Dec 17 14:46:01 turris chat[9349]: send (AT&F^M)
Dec 17 14:46:01 turris chat[9349]: expect (OK)
Dec 17 14:46:01 turris chat[9349]: AT&F^M^M
Dec 17 14:46:01 turris chat[9349]: OK
Dec 17 14:46:01 turris chat[9349]: – got it
Dec 17 14:46:01 turris chat[9349]: send (ATE1^M)
Dec 17 14:46:02 turris chat[9349]: expect (OK)
Dec 17 14:46:02 turris chat[9349]: ^M
Dec 17 14:46:02 turris chat[9349]: ATE1^M^M
Dec 17 14:46:02 turris chat[9349]: OK
Dec 17 14:46:02 turris chat[9349]: – got it
Dec 17 14:46:02 turris chat[9349]: send (AT+CGDCONT=1,“IP”,“symacom.fr”^M)
Dec 17 14:46:02 turris chat[9349]: timeout set to 30 seconds
Dec 17 14:46:02 turris chat[9349]: expect (OK)
Dec 17 14:46:02 turris chat[9349]: ^M
Dec 17 14:46:02 turris chat[9349]: AT+CGDCONT=1,“IP”,“symacom.fr”^M^M
Dec 17 14:46:02 turris chat[9349]: OK
Dec 17 14:46:02 turris chat[9349]: – got it
Dec 17 14:46:02 turris chat[9349]: send (ATD99*1#^M)
Dec 17 14:46:02 turris chat[9349]: expect (CONNECT)
Dec 17 14:46:02 turris chat[9349]: ^M
Dec 17 14:46:02 turris chat[9349]: ATD99***1#^M^M
Dec 17 14:46:02 turris chat[9349]: CONNECT
Dec 17 14:46:02 turris chat[9349]: – got it
Dec 17 14:46:02 turris chat[9349]: send ( ^M)
Dec 17 14:46:02 turris pppd[9327]: Serial connection established.
Dec 17 14:46:02 turris pppd[9327]: Using interface 3g-lte
Dec 17 14:46:02 turris pppd[9327]: Connect: 3g-lte <–> /dev/ttyUSB2
Dec 17 14:46:03 turris pppd[9327]: Modem hangup
Dec 17 14:46:03 turris pppd[9327]: Connection terminated.
Dec 17 14:46:04 turris pppd[9327]: Exit.
Dec 17 14:46:05 turris netifd: Interface ‘lte’ is now down
Dec 17 14:46:05 turris netifd: Interface ‘lte’ is setting up now
Dec 17 14:46:05 turris netifd: Interface ‘lte’ is now down

uqmi:
root@turris:~# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
“type”: “wcdma”,
“rssi”: -82,
“ecio”: 12
}

gcom:
root@turris:~# gcom -d /dev/ttyUSB2
SIM ready
Waiting for Registration…(120 sec max)
Registered on Home network: “SYMA SYMA”,2
Signal Quality: 16,99

By the way, about the passive cooler, if someone could give me the dimensions of the block (excluding the thermal pad), I could get and aluminium equivalent.

14

Hi, to me it seems the same error as mine, which I thought it was a network error due to wcdma signal only. I believe It would be interesting if you have an other sim card from the same provider to test the quality of the signal (no data is needed).
My omnia is at a remote location so I can not help you with the dimensions.

15

The carrier gave me a wrong APN, now it’s working, well, almost. Their DHCP server is not giving me the right gateway…

16

I have the exact issue as here: https://bugs.launchpad.net/linuxmint/+bug/1077544

17

Check the signal quality. If gcom signal quality is below 20, usually mine does not connect.
After connection, my ipv4 gateway is also 10.64.64.64.
Usually, it takes about 10 minutes for me to connect after disconnection when signal quality is above 20.

18

uqmi -d /dev/cdc-wdm0 --get-signal-info

{
“type”: “lte”,
“rssi”: -76,
“rsrq”: -10,
“rsrp”: -104,
“snr”: 42
}

gcom -d /dev/ttyUSB2

SIM ready
Waiting for Registration…(120 sec max)
Registered on Home network: “SYMA SYMA”,7
Signal Quality: 19,99

19

I tried to ping a remote IP, I see the ping, so it should be an issue with the return route.
Forget my reply, the carrier is blocking ICMP…
But then, I don’t know how I will make mwan3 work without ICMP checks. Thanks anyway.

20

Just for reference my signal (i use external mimo panel antenna and the provider antenna is 12km away):

gcom -d /dev/ttyUSB3
SIM ready
Waiting for Registration..(120 sec max)
Registered on Home network: "WIND GR  WIND GR",7
Signal Quality: 31,99

 uqmi -d /dev/cdc-wdm0 --get-signal-info
{
	"type": "hdr",
	"rssi": -125,
	"ecio": 5,
	"io": -106,
	"type": "lte",
	"rssi": -45,
	"rsrq": -12,
	"rsrp": -70,
	"snr": 100
}