---
title: "Screen Loads Module"
url: https://develop.sentry.dev/sdk/telemetry/traces/modules/screen-loads/
---

# Screen Loads Module

The Screen Loads module records metrics from spans in `ui.load` transactions using specific span operations.

# [Transaction Conventions](https://develop.sentry.dev/sdk/telemetry/traces/modules/screen-loads.md#transaction-conventions)

## [Transaction Measurements](https://develop.sentry.dev/sdk/telemetry/traces/modules/screen-loads.md#transaction-measurements)

| Key                       | Unit         | Description                               | Conditions                                |
| ------------------------- | ------------ | ----------------------------------------- | ----------------------------------------- |
| `time_to_initial_display` | milliseconds | The time it took to load the first frame  | required                                  |
| `time_to_full_display`    | milliseconds | The time it took to fully load the screen | optional, requires manual instrumentation |

# [Span Conventions](https://develop.sentry.dev/sdk/telemetry/traces/modules/screen-loads.md#span-conventions)

## [Span Operations](https://develop.sentry.dev/sdk/telemetry/traces/modules/screen-loads.md#span-operations)

| Span OP                   | Description                                        |
| ------------------------- | -------------------------------------------------- |
| `db.sql.query`            | A database query                                   |
| `db.sql.room`             | A database query using the Room library on Android |
| `db.sql.transaction`      | -                                                  |
| `db`                      | An operation on the database                       |
| `file.read`               | Reading a file from the file system                |
| `file.write`              | Writing to a file on the file system               |
| `http.client`             | An outgoing network request                        |
| `ui.load`                 | An operation on a mobile UI                        |
| `ui.load.full_display`    | When the screen has fully completed loading        |
| `ui.load.initial_display` | When the screen has rendered its first frame       |