# Sim-missing error

**URL:** <https://community.sixfab.com/t/sim-missing-error/1032>\
**Category:** 3G-4G/LTE Base Shield\
**Created:** [December 23, 2020, 6:57am UTC](https://community.sixfab.com/t/sim-missing-error/1032 "2020-12-23T06:57:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![john-4148](https://community.sixfab.com/letter_avatar_proxy/v4/letter/j/e19adc/32.png) [@john-4148](https://community.sixfab.com/u/john-4148)\
**Post date:** [December 23, 2020, 6:57am UTC](https://community.sixfab.com/t/sim-missing-error/1032/1 "2020-12-23T06:57:52Z")

</div>

Tested unit and cannot get it to read any sim’s.  
Tried twillo sim and US Mobile.  
Sims work in other devices. I found docs showing they are using a twillo super sim… I ordered one to try but have to wait for it. Does this unit require a special type of SIM?

Any idea’s  
Just also confiming this unit can run as with a single usb connection. I do not need to use the headers correct ?

Running Ubuntu on ARM unit.  
This some logs.

```
root@x70b3d52c1016:~# mmcli -m 0
/org/freedesktop/ModemManager1/Modem/0 (device id '5d3fee281a530b560780b93177dc495f42837a25')
      -------------------------
      Hardware | manufacturer: 'QUALCOMM INCORPORATED'
               | model: 'LE910C1-NF'
               | revision: '25.20.266 1 [Jun 21 2019 13:00:00]'
               | supported: 'gsm-umts
               | lte
               | gsm-umts, lte'
               | current: 'gsm-umts, lte'
               | equipment id: '357541093306035'
      -------------------------
      System | device: '/sys/devices/platform/soc/1c1a000.usb/usb1/1-1'
               | drivers: 'qmi_wwan, option1'
               | plugin: 'Generic'
               | primary port: 'cdc-wdm0'
               | ports: 'ttyUSB0 (qcdm), ttyUSB2 (at), ttyUSB3 (at), wwan0 (net), cdc-wdm0 (qmi)'
      -------------------------
      Numbers | own : 'unknown'
      -------------------------
      Status | lock: 'unknown'
               | unlock retries: 'unknown'
               | state: 'failed'
               | failed reason: 'sim-missing'
               | power state: 'unknown'
               | access tech: 'unknown'
               | signal quality: '0' (cached)
      -------------------------
      Modes | supported: 'allowed: 2g, 3g, 4g; preferred: none'
               | current: 'allowed: any; preferred: none'
      -------------------------
      Bands | supported: 'unknown'
               | current: 'unknown'
      -------------------------
      IP | supported: 'ipv4, ipv6, ipv4v6'
      -------------------------
      SIM | path: 'none'

      -------------------------
      Bearers | paths: 'none'
```

---

<div class="post-metadata">

**Author:** ![ensar](https://community.sixfab.com/user_avatar/community.sixfab.com/ensar/32/8_2.png) [@ensar](https://community.sixfab.com/u/ensar)\
**Post date:** [December 24, 2020, 12:35pm UTC](https://community.sixfab.com/t/sim-missing-error/1032/2 "2020-12-24T12:35:58Z")

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Hi @john-4148 ,

Did you troubleshoot the HAT according to the steps mentioned in the [Troubleshoot Guide](https://docs.sixfab.com/docs/raspberry-pi-3g-4g-lte-base-hat-troubleshooting).

‘Check the SIM card slot for any damaged pin. With a damaged pin, your SIM will not be recognized.’

Please send us a picture of the HAT without the SIM inserted.