Vodafone SIM in Spain not working [solved, wrong DNS sever]

[claus]

Hi all,
I am sorry to bother again, but I am stuck with LTE. I am trying to get going with the Vodafone SIM in my FiPy in Spain. I first activated the SIM in pybytes and then used the provisioning process hoping Pybytes would just start the connection. The process hangs during "attach". I then used the script as found at https://docs.pycom.io/tutorials/networks/lte/ which gives more details about the state and looking at the output of print(lte.send_at_cmd('AT!="fsm"')) I find that RRC_TOP_FSM goes from
CAMPED ->SCANNING(WAIT_RSSI)->SCANNING(WAIT_CELL_ID)->SYNCING(WAIT_SYNC)->SYNCING(WAIT_SCAN_DELAY)->SYNCING(WAIT_SYNC)->CAMPED
This happens again and again. The tutorial says "If the system returns multiple times from SYNCING to CAMPED, check the network availability, simcard placement and / or the firmware version". I checked simcard placement and firmware version is the latest (1.20.2.r1). So no network availability? The FAQ about the Vodafone SIM says "ok" for Spain.

Any help greatly appreciated!

[claus]

GREAT!! Thanks a lot, it is working!

[Gijs]

Are you able to make a manual LTE connection using the LTE module like so:

from network import LTE
import time
import socket

lte = LTE()
lte.init()
#some carriers have special requirements, check print(lte.send_at_cmd("AT+SQNCTM=?")) to see if your carrier is listed.
#when using verizon, use 
#lte.init(carrier=verizon)
#when usint AT&T use, 
#lte.init(carrier=at&t)

#some carriers do not require an APN
#also, check the band settings with your carrier
lte.attach(band=20, apn="pycom.io") 
print("attaching..",end='')
while not lte.isattached()
    time.delay(0.25)

    print('.',end='')
    print(lte.send_at_cmd('AT!="fsm"'))         # get the System FSM
print("attached!")

lte.connect()
print("connecting [##",end='')
while not lte.isconnected():
    time.sleep(0.25)
    print('#',end='')
    #print(lte.send_at_cmd('AT!="showphy"'))
    print(lte.send_at_cmd('AT!="fsm"'))
print("] connected!")

print(socket.getaddrinfo('pycom.io', 80))  
lte.deinit()
#now we can safely machine.deepsleep()

Let me know!
(btw, I think this topic could be related to the issue you are having: https://forum.pycom.io/topic/6350/error-while-connecting-pybytes-with-lte), we solved it in the end by using:

>>> lte.connect()
>>> import socket
>>> socket.getaddrinfo('www.pycom.io', 80)
[(2, 1, 0, '', ('18.195.176.111', 80))]
>>> socket.dnsserver()
('172.31.16.100', '172.31.32.100')
>>> 

Before enabling pybytes

from _pybytes import Pybytes
...

[claus]

OK, so I got a few steps further. The FiPy comes with a CAT-M1 LTE firmware and the Vodafone card needs the NB-IoT firmware (see https://docs.pycom.io/updatefirmware/ltemodem/). It would have been nice to include this in the docs for the Vodafone cards (https://docs.pycom.io/cellularservices/vodafone/) it has taken me quite some time to it find out. I now have provisioned pybytes with the new network settings, and LTE connects, but I don't seem to get a pybytes connection:

Attempting to connect with network lte
Initialized watchdog for WiFi and LTE connection with timeout 1260000 ms
LTE init(carrier=None, cid=1)
LTE attach(band=20, apn=pycom.io, type=IP)
LTE connect()
LTE is_connected()
LTE connection established
connect_lte with start_mqtt is now removed please call communication_protocol or start_mqtt directly
MQTT Protocol
Socket create error: [Errno 202] EAI_FAIL
This is PybytesProtocol.start_MQTT
Socket send error [Errno 128] ENOTCONN
Socket create error: [Errno 202] EAI_FAIL
Socket create error: [Errno 202] EAI_FAIL
Socket create error: [Errno 202] EAI_FAIL
Connected to MQTT mqtt.pybytes.pycom.io
Pybytes connected successfully (using the built-in pybytes library)
This is pack_info_message()
__pack_message: b'310504a00581000000'
MQTT Protocol
Socket create error: [Errno 202] EAI_FAIL
Socket create error: [Errno 202] EAI_FAIL
Socket create error: [Errno 202] EAI_FAIL
...

The last message repeats and repeats. My LTE config is

'lte': {'apn': 'pycom.io', 'cid': 1, 'reset': False, 'carrier': 'standard', 'band': 20, 'type': 'IP'}

Not sure where to go now....