Trouble Connecting to network


#1

Hello, I am using a mangOH Red with a WP7702. I have registered my Sierra Wireless SIM card using AirVantage and have reached the step where I am trying to connect to a mobile network.

I will get this response to cm radio initially;
root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operato
Current RAT: Not available
Status: Not registered but currently searching for a new operator (LE_MRC_REG_SEARCHING)
Signal: No signal strength (0)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)

But then get this response eventually;
root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operato
Current RAT: Not available
Status: Not registered and not currently searching for new operator (LE_MRC_REG_NONE)
Signal: No signal strength (0)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)

Am I missing a step?


#2

Hi,

The reason is that as of today, SIMs provided with mangOH Red for LTE-m1 are for developer mode only.

For WP7702 modules when used with Sierra SIM provided with mangOH Red , note the following:

  1. NB-IOT doesnt work.
  2. LTE-m1 is mostly working: send AT command: at!selciot=2
  3. 2G always work. send AT command: at!selciot=6

regards,
Ashish


#3

Thanks for the info. What are the current limitations in LTE-m1 mode? When is NB-IOT going to be ready?


#4

For NB-IOT, the Sierra SIM provided with mangOH Red is not ready today. LTE-m1 should be working but we are currently doing all the tests.


#5

Progress…
I issued the at!selciot=2 command and reissued cm radio on, now I get this…

root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operato
Current RAT: Not available
Status: Registration was denied, usually because of invalid access credentials (LE_MRC_REG_DENIED)
Signal: No signal strength (0)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)


#6

did you activate your SIM on AV?


#7

Yes
UID
05e57133fb21481995529b091f2fadde
IMEI
352653090111964
Serial Number
VU810385260910


#8

can you try the 2G network first and see whether that works? Then we try the LTE-m1.
Also, remember it takes 0-30 minutes for first time SIM activation from AV


#9

I tried again this morning. With 2G setting it never works, so I reverted to the LTE-M1 setting. I received the following once again;
root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operato 310 260
Current RAT: GSM network (LE_MRC_RAT_GSM)
Status: Registration was denied, usually because of invalid access credentials (LE_MRC_REG_DENIED)
Signal: Weak signal strength (2)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)

root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operato
Current RAT: Not available
Status: Registration was denied, usually because of invalid access credentials (LE_MRC_REG_DENIED)
Signal: No signal strength (0)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)

Can you take a look and see if I registered on AV correctly?


#10

can you provide the output for the following :
cm sim info
cm info


#11

root@swi-mdm9x28:~# cm sim info
Type: EXTERNAL_SLOT_1
ICCID:
Home Network Operator:
EID:
IMSI:
Phone Number:

root@swi-mdm9x28:~# cm info
Device: WP7702
IMEI: 352653090111964
IMEISV: 2
FSN: VU810385260910
Firmware Version: SWI9X06Y_02.14.04.00 a03347 jenkins 2018/[ 170.461357] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:2) mode:FIFO slv_addr:0x3a MSTR_STS:0x0c1300c8 OPER:0x00000090
02/19 06:13:56
Bootloader Version: SWI9X06Y_02.14.04.00 a03347 jenkins 2018/02/19 06:13:56
MCU Version: 002.007
PRI Part Number (PN): 9907365
PRI Revision: 001.004
Carrier PRI Name: GENERIC
Carrier PRI Revision: 001.012_000
SKU: 1103530
Last Reset Cause: Power Down
Resets Count: Expected: 24 Unexpected: 1


#12

hmm…did you insert the SIM? How come the SIM gives no info?


#13

Yes, it is inserted. At one point I did get info from it.


#14

can u power cycle and try again?


#15

Same result after a power cycle.
root@swi-mdm9x28:~# cm sim info
Type: EXTERNAL_SLOT_1
ICCID:
Home Network Operator:
EID:
IMSI:
Phone Number:


#16

clearly your sim is not inserted properly or not working. If we cant read the SIM, it will never connect


#17

I tried again…
root@swi-mdm9x28:~# cm sim info
Type: EXTERNAL_SLOT_1
ICCID: 89332401000007753847
Home Network Operator:
EID:
IMSI: 208011500652538
Phone Number:


#18

now try
cm data connect


#19

root@swi-mdm9x28:~# cm data connect
Setting up profile 1
Setting access point name … ok
Setting packet data protocol … ok
Setting Authentication … ok
Connecting … failed
Sun Jan 6 00:05:49 UTC 1980 - Connection Failure: LE_FAULT


#20

can you show me the info for logread -f ?