Hey, adding some code that should get you there and that includes a lot of useful debugging stuff. You'll need to change the apn / band .
import time
import socket
from network import LTE
# Connect to Mobile
def connect_mobile(settings):
lte = LTE()
connected = False
display.set_mode("Trying: LTE")
try:
lte.init()
print("LTE init success")
except:
print("LTE init failed")
print(lte.ue_coverage()) # Check network coverage (True, is yes)
print(lte.send_at_cmd('AT!="fsm"'))
print(lte.send_at_cmd("AT"))
print(lte.send_at_cmd("ATI1"))
print(lte.send_at_cmd("AT+CSMINS?"))
print(lte.send_at_cmd("AT+CFUN?"))
print(lte.send_at_cmd('ATI+CIMI')) # Request IMSI
print(lte.send_at_cmd('ATI+SQNCTM=?'))
print("Add band, will be much faster")
#lte.attach(band=None, apn="iot.1nce.net") #band : to scan for networks. If no band (or None) is specified, all bands will be scanned. The possible values for the band are: 3, 4, 5, 8, 12, 13, 20 and 28.
lte.attach(band=20, apn="iot.1nce.net") # works
print("attaching..",end='')
while not lte.isattached():
time.sleep(0.25)
print('.',end='')
print(lte.send_at_cmd('AT!="fsm"')) # get the System FSM
print("attached!")
# once attached
print(lte.send_at_cmd("AT+CSQ")) # Signal quality, returns <ssid> (), <ber>
# SSID (received signal strength indication)
## 0: -113dBm or less
## 1: -111 dBm
## 2..30: -109..-53 dBm
## 31: -51 dBm or greater (best)
## 99: not known or not detectable
# ber : channel bit error rate in percent
## 0..7: see table
## 9: not known or not detectable
lte.connect()
print("connecting [##",end='')
while not lte.isconnected():
time.sleep(0.25)
print('#',end='')
print(lte.send_at_cmd('AT!="fsm"'))
print("] connected!")
print(socket.getaddrinfo('pybytes.pycom.io', 80))
lte.deinit() # Disables LTE modem completely
return connected
