# 2.1 Insert SIM Card

Use a Nano SIM card (12.3x8.8mm) in the router. If it's a new SIM card, please follow the instruction from the mobile carrier to activate the SIM card.

<img src="/files/s0utuIPSNBobX72ER96o" alt="" data-size="original">&#x20;

{% hint style="warning" %}
Please always **turn off the power** while inserting or removing the SIM card.\
Please use an unlocked and activated SIM card.&#x20;
{% endhint %}

### **Insert A SIM Card**

1. Locate the SIM1-2 slots in the top right corner of the motherboard.
2. Hold the lid of the SIM card slot and slide left to open the cover.
3. Put a Nano SIM card in the **SIM1** slot. \
   \&#xNAN;*There is only one correct way to settle the SIM card - the gold pins should be face down, and the notch should be on the top right corner.*
4. Cover the SIM lid and slide right to lock the lid.

<figure><img src="/files/t2wnsPVptmSqZq9OqiW2" alt=""><figcaption><p>EZR34T-5G - Insert Nano SIM Card in SIM1 Slot</p></figcaption></figure>

{% hint style="info" %}
**Clean the SIM Card**

please check if the SIM card is clean, especially on the golden contacts. If there is dust/dirt/oil on the SIM card, you can follow the tips to [clean the SIM card](https://www.outdoorrouter.com/outdoor-4g-router-with-sim-card-slot/).
{% endhint %}


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