Can not force SIMCOMM 7000E to connect to LTE over GSM

Mehmet Kose

Hey everyone. I live in Turkey and bought Botletics SIMCOMM 7000E shield along with Hologram Global SIMCARD. For over a week, I am trying to connect to the LTE network but everytime it connects to GSM network.

Prerequisite Knowledge:
NB-IoT Coverage:
Turkcell: B20 Vodafone: B8 bands according to the lin(https://halberdbastion.com/intelligence/geographic-regions/europe/turkey)

Hologram Support In Turkey:
Turkcell, Vodafone, Turk Telekom
https://hologram.io/pricing/coverage/

Below is the configuration I use;

// LTE Only
 --> AT+CNMP?
+CNMP: 38

// Both NB*IoT and LTE-M, to be safe
 --> AT+CMNB?
+CMNB: 3

// 28602: Vodafone and 28603: Turk Telekom
--> AT+COPS=?
+COPS: (0,"TURKCELL","TURKCELL","28601",0),(0,"286 02","286 02","28602",0),(0,"286 03","286 03","28603",0),,(0,1,2,3,4),(0,1,2)

// Network settings
 --> AT+CGDCONT?
+CGDCONT: 1,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 13,"IP","hologram","0.0.0.0",0,0,0,0

// Band settings, default
 --> AT+CBANDCFG?
+CBANDCFG: "CAT-M",3,8,20,28
+CBANDCFG: "NB-IOT",3,8,20,28

// Automatic connection
 --> AT+COPS?
+COPS: 0

//  Roaming
 --> AT+CREG?
+CREG: 0,5

// Signal strength seems good
 --> AT+CSQ
+CSQ: 29,99

// Connected network: Turkcell GSM
 --> AT+CPSI?
+CPSI: GSM,Online,286-01,0x8e36,34500,61 EGSM 900,-55,0,54-54

Whatever I do, connection is always the GSM one instead of LTE. Do I miss a certain important AT command? Or maybe, there might be problem with Hologram or SIMCOMM7000E, or even with carriers.

Thanks in advance.

Felix Donkers

This post is deleted!

Mehmet Kose

I have done exactly in the comments and here are the results:

AT+CGPADDR
+CGPADDR: 1,0.0.0.0,0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0
+CGPADDR: 13,0.0.0.0

 --> AT+CPSI?
+CPSI: GSM,Online,286-01,0x8e36,34500,61 EGSM 900,-55,0,54-541

felixdonkers

I didn’t post anything here… Who’s posting in my name?