FiPy does not connect to LTE

[Dewakar Kanday]

Hi There, I am facing an issue where the FiPy is unable to connect to the LTE. I have tried 3 different SIMs(Tmobile, AT & T and Arduino) and have the same issue.
When I run the below code, it keeps displaying this info:
SYSTEM FSM

+--------------------------+--------------------+
|            FSM           |        STATE       |
+--------------------------+--------------------+
| RRC TOP FSM              |SCANNING            |
| RRC SEARCH FSM           |WAIT_RSSI           |
| RRC ACTIVE FSM           |NULL                |
| PMM PLMN FSM             |NORM_WAITCELL       |
| EMM MAIN FSM             |NULL                |
| EMM AUTH FSM             |NULL                |
| EMM CONN FSM             |NULL                |
| EMM TAU FSM              |NULL                |
| EMM TEST FSM             |NULL                |
| ESM BEARER FSM           |BEARER_NULL         |
| SMS MT FSM               |IDLE                |
| SMS MO FSM               |IDLE                |
| LPP FSM                  |IDLE                |
| HP MAIN FSM              |IDLE                |
| HP USIM FSM              |READY               |
| HP SMS MO FSM            |IDLE                |
| HP SMS MT FSM            |IDLE                |
| HP CAT FSM               |IDLE                |
+--------------------------+--------------------+

from network import LTE
import time
import socket

lte = LTE()
#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="your apn")
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!")

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

[Gijs]

Please check the page here: https://docs.pycom.io/tutorials/networks/lte/#lte-troubleshooting-guide. Can you confirm the simcards are specifically for NB-IoT and/or CAT-M1 LTE networks, and not the regular 4G mobile phone simcards? also confirm with the carrier whether the there is coverage in your region