> For the complete documentation index, see [llms.txt](https://docs.globalalerting.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.globalalerting.com/devices/telephony/cell-phone.md).

# Cell Phone

The Cell Phone device type is a lightweight duty-of-care offering that works on any phone that can send and receive SMS.

The Cell Phone device type supports Monitor Me and Check-In Schedules (with reminders being sent by SMS) and doesn't require any software to be installed on the device.

If you have a smartphone, you can check in via the link provided in the message.  If your phone supports it, your check-in can even include your current location via browser geo-location.  If you have a older style phone without a web browser, you can reply to the message to check in.

{% hint style="info" %}
Note that inbound SMS charges apply.

This function will only be supported for domestic use in the UK (+44) and USA / Canada (+1) although other countries can be added upon request.
{% endhint %}

## Adding Devices

1. In the GAP Portal, click "Devices" from the banner menu.
2. Click "+".
3. Select a tenant from the "Tenant" drop-down list.
4. Select "Cell Phone" from the "Device Type" drop-down list.
5. Enter a unique ID in the "Device Id" text box.
6. Enter a display name for the device in the "Friendly Name" text box.
7. Assign a user to the device using the "Assigned User" drop-down list.
8. Enter the device's phone number in the "Phone Number" text box.
9. Click the "OK" button.

## Monitoring

### Checking In

Check-in reminders are sent via SMS.

Each message contains a link to a web page where you can check in.

If your web browser is allowed to access your device's location, this information will be provided with your check-in.  If not, an IP address geolocation will be used.

If your device does not have a web browser, you can reply to the reminder SMS with:

```
CHECK IN
```

### Starting Monitoring

To start monitoring, send:

```
MONITOR ME x
```

Where x is the check-in frequency in minutes (e.g. to check in every hour, send "MONITOR ME 60").

### Stopping Monitoring

{% hint style="danger" icon="circle-exclamation" %}
Do not send "STOP MONITOR ME" as this will prevent you from receiving further SMS from GAP.
{% endhint %}

To stop monitoring, send:

```
CANCEL MONITOR ME
```