# SIM7020e and SIM7000 **URL:** \ **Category:** Raspberry Pi\ **Created:** [10 June 2021 06:28 UTC](https://forum.core-electronics.com.au/t/sim7020e-and-sim7000/10403 "2021-06-10T06:28:29Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Mat165730](https://avatars.discourse-cdn.com/v4/letter/m/b4bc9f/32.png) [@Mat165730](https://forum.core-electronics.com.au/u/Mat165730)\ **Post date:** [10 June 2021 06:28 UTC](https://forum.core-electronics.com.au/t/sim7020e-and-sim7000/10403/1 "2021-06-10T06:28:29Z")
**CONTEXT:** I had difficulties connecting my raspberry pi (tested on 3B+, 4 and 0) using SIM7000, so i purchased a SIM7020e. But this one also have similar connection issue. I was using a Telstra data package pre-paid sim but after chatting to a support staff from core-electronics, replaced the sim with a “hologram” sim but still have the same issue. **WHAT IS THE ISSUE:** sim seems to be detected alright by the device. The device is unable to communicate with the antenna. I am not yet using my code. Just followed steps in this link: [https://www.waveshare.com/wiki/SIM7020E\_NB-IoT\_HAT](https://www.waveshare.com/wiki/SIM7020E_NB-IoT_HAT) and used the code provided by the company . Here are the outputs running the examples in the library: AT example: AT OK Wait 5 seconds… AT+CGMR 1752B10SIM7020E OK AT+CPIN? +CPIN: READY OK AT+CSQ +CSQ: 0,0 OK AT+CGREG? +CGREG: 0,2 OK AT+CGREG? +CGREG: 0,2 OK AT+CGACT? AT+COPS? +COPS: 0 OK * * * TCP example: AT OK Wait 5 seconds… AT+CGMR 1752B10SIM7020E OK AT+CPIN? +CPIN: READY OK AT+CSQ +CSQ: 26,0 OK AT+CGREG? +CGREG: 0,0 OK AT+CGREG? +CGREG: 0,0 OK AT+CGACT? AT+COPS? +COPS: 0 OK The module starts… AT+CSOC=1,1,1 +CSOC: Created TCP socket id 0 Successfully! AT+CSOCON=0,2317,“118.190.93.84” ERROR AT+CSOSEND=0,0,“Waveshare Send to Socket id 0 using TCP” ERROR AT+CSOCL=0 OK Close Socket ---
**Author:** ![Oliver33](https://avatars.discourse-cdn.com/v4/letter/o/a9adbd/32.png) [@Oliver33](https://forum.core-electronics.com.au/u/Oliver33)\ **Post date:** [12 June 2021 00:47 UTC](https://forum.core-electronics.com.au/t/sim7020e-and-sim7000/10403/2 "2021-06-12T00:47:38Z")
> [@Mat165730](#): > > OK > AT+CSQ > +CSQ: 0,0 This means you have no signal. Is the antenna properly connected and pointing away from the PCB? > [@Mat165730](#): > > OK > AT+CGREG? > +CGREG: 0,2 This means you’re not connected to a network. I have a sim7000e arduino shield and I did some work on getting it connected here: > [@Sim7000e can't Connect to the any network](https://forum.core-electronics.com.au/t/sim7000e-cant-connect-to-the-any-network/9810/10): > > Your troubles have encouraged me to pull out my [SIM7000E Shield for my Arduino](https://core-electronics.com.au/sim7000e-arduino-nb-iot-lte-gprs-gps-expansion-shield.html). I bought it ages ago when they were on clearance, but hadn’t even taken it out of the packet until now! Here’s a really great thread from a while back: Here’s what I’ve learned so far: The SIM7000E is [certified by Telstra](https://www.telstra.com.au/content/dam/shared-component-assets/tecom/iot/capabilities/certified-devices/telstra-m2m-certified-devices-modules.pdf), so no issues there. It definitely works in Aus, and others have gotten them working. [image] Your path of least resistance will be to get an IoT SIM from Telstra or Hologram: [IoT Data SIM p…](https://www.telstra.com.au/small-business/internet-of-things/data-sim-plans#standalone) If you’re having trouble I’d recommend getting SMS working before trying to tackle tcp/ip. ---
**Author:** ![Mat165730](https://avatars.discourse-cdn.com/v4/letter/m/b4bc9f/32.png) [@Mat165730](https://forum.core-electronics.com.au/u/Mat165730)\ **Post date:** [28 June 2021 06:16 UTC](https://forum.core-electronics.com.au/t/sim7020e-and-sim7000/10403/3 "2021-06-28T06:16:51Z")
Thanks Oliver. well in my case, i am trying do it on raspberry pi. It doesn’t seem to work! this is the output from TCP: OK The module starts… AT+CSOC=1,1,1 +CSOC: Created TCP socket id 0 Successfully! AT+CSOCON=0,2317,“118.190.93.84” ERROR AT+CSOSEND=0,0,“Waveshare Send to Socket id 0 using TCP” ERROR AT+CSOCL=0 OK Close Socket ---
**Author:** ![Oliver33](https://avatars.discourse-cdn.com/v4/letter/o/a9adbd/32.png) [@Oliver33](https://forum.core-electronics.com.au/u/Oliver33)\ **Post date:** [28 June 2021 11:33 UTC](https://forum.core-electronics.com.au/t/sim7020e-and-sim7000/10403/4 "2021-06-28T11:33:31Z")
Yes, you need to get connected to a network first. You can’t establish a TCP connection if you’re not connected to anything. Definitely follow my advice above to get SMS working before adding the additional complexity of TCP.