# SIM Card not getting detected

**URL:** <https://forum.digikey.com/t/sim-card-not-getting-detected/70132>\
**Category:** Q&A\
**Created:** [June 29, 2026, 9:05pm UTC](https://forum.digikey.com/t/sim-card-not-getting-detected/70132 "2026-06-29T21:05:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![happyanil](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@happyanil](https://forum.digikey.com/u/happyanil)\
**Post date:** [June 29, 2026, 9:05pm UTC](https://forum.digikey.com/t/sim-card-not-getting-detected/70132/1 "2026-06-29T21:05:27Z")

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------Question for [ED-HMI3632-101C-10832-4US-S](https://www.digikey.com/en/products/detail/edatec/ED-HMI3632-101C-10832-4US-S/25881470) Please Put your question below------

Inserted the SIM card in the SIM slot, and the unit is not detecting/recognizing the SIM card.  
Tried with multiple working SIM cards, and the results are the same.  
Am I missing something?  
Please advise if there are any settings I need to configure.  
Also, does this unit support eSIM?

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**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\
**Post date:** [June 29, 2026, 9:24pm UTC](https://forum.digikey.com/t/sim-card-not-getting-detected/70132/2 "2026-06-29T21:24:46Z")

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Edatec has a few faq’s on this:

> **[Configuring 4G](https://edatec.cn/docs/os/raspberry-pi-os(bookworm)/part0-configuring-4g-networkmanager/)**
>
> Product Document, Application Notes, Demo Solutions

> **[Configuring 4G](https://edatec.cn/docs/os/raspberry-pi-os(bookworm)/part7-configuring-4g/)**
>
> Product Document, Application Notes, Demo Solutions

Regards,

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<div class="post-metadata">

**Author:** ![happyanil](https://avatars.discourse-cdn.com/v4/letter/h/ac8455/32.png) [@happyanil](https://forum.digikey.com/u/happyanil)\
**Post date:** [June 30, 2026, 2:44am UTC](https://forum.digikey.com/t/sim-card-not-getting-detected/70132/3 "2026-06-30T02:44:42Z")

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Thanks for the prompt response.

The trick was to power cycle the device.

Reboot device didn’t help.

The key: (as stated in the response, which I eventually figured out after few more iterations after posting the question)

1. Turn off (disconnect from power supply) device.
2. Insert the SIM.
3. Power on the device. Wait for the SIM to get registered on the network after the boot process (modem bring up) completes.
4. Cellular WAN is available for data connection.