> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Sessions by Device, Microsoft Clarity

> Sessions by Device for Microsoft Clarity stores. Tracked live in Vortex IQ Nerve Centre. How to read it, why it matters, and how to act on it.

**Card class:** [Non-Hero](/nerve-centre/overview#card-classes-explained)  •  **Category:** [Sessions & Audience](/nerve-centre/connectors#connectors-by-type)

## At a glance

> Sessions by Device shows how your Clarity-tracked sessions split across desktop, mobile, and tablet. Microsoft Clarity records every session it captures and tags the device, so this card gives you a quick read on where your audience actually browses. If most sessions are mobile but your frustration signals also concentrate there, you know where to focus your next round of fixes.

|                       |                                                                                                                             |
| --------------------- | --------------------------------------------------------------------------------------------------------------------------- |
| **What it counts**    | The number of Clarity-captured sessions broken down by device category (desktop, mobile, tablet).                           |
| **Sample type**       | Behavioural session data from Microsoft Clarity (heatmaps and session recordings), refreshed on the standard data refresh.  |
| **Why it matters**    | It tells you which devices drive your traffic so you can prioritise UX and conversion work where it lands.                  |
| **Reading the value** | A growing mobile share signals your experience must be mobile-first; a sudden swing can flag a tracking or campaign change. |
| **Currency**          | count                                                                                                                       |
| **Time window**       | `30D`                                                                                                                       |
| **Alert trigger**     | `-`                                                                                                                         |
| **Sentiment key**     | `clr_device_split`                                                                                                          |
| **Roles**             | owner, marketing                                                                                                            |

## Calculation

Microsoft Clarity classifies each captured session by the device used to browse, then totals sessions within each category over the selected window. Vortex IQ reads those device-tagged session counts and renders the split. See At a glance for the time window and the worked example below for a typical reading.

## Worked example

*A representative reading of **Sessions by Device** for a typical merchant on Microsoft Clarity.* Over the last 30 days a store captured 42,000 sessions: 27,300 mobile (65%), 12,600 desktop (30%), and 2,100 tablet (5%). The merchant noticed mobile had climbed from 55% a quarter earlier, so they used Vortex Mind to trace whether the shift came from a new social campaign or a tracking change, then asked Ask Viq in plain English to compare frustration signals by device to decide where to invest first.

## Sibling cards merchants should reference together

| Card                                                                             | Why merchants reach for it                                           |
| -------------------------------------------------------------------------------- | -------------------------------------------------------------------- |
| [`clr_sessions_captured`](/nerve-centre/kpi-cards/clarity/sessions)              | Confirms the total session base this split divides up.               |
| [`clr_sessions_by_country`](/nerve-centre/kpi-cards/clarity/sessions-by-country) | Pairs device mix with geography for audience targeting.              |
| [`clr_rage_click_pct`](/nerve-centre/kpi-cards/clarity/rage-click-rate)          | Shows whether frustration concentrates on a particular device.       |
| [`clr_quick_back_rate`](/nerve-centre/kpi-cards/clarity/quick-back-rate)         | Reveals device-specific landing mismatch when paired with the split. |
| [`clr_health_score`](/nerve-centre/kpi-cards/clarity/clarity-ux-health-score)    | Frames the device picture against overall UX health.                 |

## Reconciling against Microsoft Clarity

**Where to look in Microsoft Clarity's own dashboard:**

Open the Clarity Dashboard insights and review the device breakdown, or apply device filters in the recordings and heatmaps views. Confirm the period and any filters match the Vortex IQ profile before comparing.

**Why the Vortex IQ value may legitimately differ:**

| Reason                                                                                                  | Direction | What to do                         |
| ------------------------------------------------------------------------------------------------------- | --------- | ---------------------------------- |
| **Period boundary.** Vortex IQ uses rolling windows by default; Clarity may use calendar periods.       | Variable  | Match the period range.            |
| **Sampling.** Clarity may sample sessions on high-traffic sites; Vortex IQ reads what Clarity exposes.  | Variable  | Allow for sampling on busy stores. |
| **Filter scope.** Profile-level filters (device, channel, bot exclusion) may narrow the Vortex IQ view. | Variable  | Match filter settings.             |

**Cross-connector reconciliation:** complement with sibling cards in the same category for the full diagnostic picture. For divergence investigations, use Vortex Mind.

## Known limitations / merchant FAQs

**Q: How often does Sessions by Device update?**
The card refreshes on the standard data refresh (typically every 30-60 minutes for live integrations). For real-time signals, force a manual refresh from the dashboard.

**Q: Why does my Microsoft Clarity dashboard show a different number?**
Clarity may sample sessions on high-traffic sites and filter bots, and its calendar period may differ from the Vortex IQ rolling window. Device classification can also shift if a profile-level device filter is active. Match sampling, bot filtering, period, and filters before assuming a real divergence.

**Q: Why does the device split not add up to my total ecommerce sessions?**
Clarity counts sessions it captured and tagged, which can differ from your analytics or platform session totals due to sampling and bot exclusion. Treat this card as a behavioural device read, not a billing-grade session count.

**Q: Can I customise the alert threshold?**
Yes, sensitivity thresholds are configurable per profile in the Sensitivity tab. Adjust to match your business baseline rather than relying on the generic default.

***

### Tracked live in Vortex IQ Nerve Centre

*Sessions by Device* is one of hundreds of KPI pulses Vortex IQ tracks across Microsoft Clarity and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English.

[Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.