Update Android App Usage Documentation (#657)

docs/software/android/usage.mdx

@@ -19,12 +19,12 @@ You will need a device with Meshtastic installed to go any further. See the [get
 
 [![Search for devices](/img/android/android-settings-none-c.png)](/img/android/android-settings-none.png)
 
-To find devices to connect via Bluetooth click the button on the bottom right corner.
+To find devices to connect via Bluetooth click the "+" button on the bottom right corner.
 
 [![Device available to select](/img/android/android-settings-connect-sm.png)](/img/android/android-settings-connect.png)
 
-1. Select the device name, `Meshtastic_bebc` in this example. (You will see devices within range, so make sure to get the right one.)
-2. Before you can connect for the first time, you need to "pair" the devices to allow communication between them. Some devices are pinless, others require entering a PIN shown on the screen.
+1. Select the device name, `Meshtastic_769d` in this example. (You will see devices within range, so make sure to get the right one.)
+2. Before you can connect for the first time, you need to "pair" the devices to allow communication between them. Some devices are pinless, others require entering a PIN shown on the device screen.
    :::note
    If the device was flashed without a screen connected, it will automatically default to a pairing PIN of '123456'. If it was booted with a screen once, the config is set to random pin. If you remove the screen afterwards, it stays like this.
    Either set it to use the default pin manually, or factory reset it and it will revert to '123456' after the next boot.
@@ -43,19 +43,24 @@ The cloud icon at the top right corner indicates if you are connected to a devic
 
 ## Common tasks
 
+### Set your region
+
+In order to start communicating with your mesh, you must select a region. This setting controls which frequency range your device uses and should be set according to your location. See [Region Settings](https://meshtastic.org/docs/getting-started/initial-config#set-regional-settings) for a list of region codes and their meanings.
+- Tap on the "Region" dropdown in the top-right corner and make the appropriate selection.
+
 ### Change your name
 
-Edit the "Your name", e.g. to be "Mike Bird". This is the name that other people will see, so make it unique within your group. The initials e.g. "MB" should also be unique and will be used to identify you in the message history and on the device screens.
+Edit the "Your name", e.g. to be "Mike Bird". This is the name that other people will see, so make it unique within your group. The initials e.g. "MB" should also be unique and will be used to identify you in the message history and on the device screens.  Initials, or "short name", can be customized in the Radio configuration - User settings.  The four characters displayed after your initials cannot be changed. These are the last four hex digits of the device MAC address.  Devices with unset names will display these four characters as the device short name.
 
 [![Changing device name](/img/android/android-settings-mike-sm.png)](/img/android/android-settings-mike.png)
 
 ### Setup a channel
 
-If you have been sent a QR code or link for Meshtastic, then skip ahead to [Join a Channel](#join-a-channel). Devices have a default channel preconfigured, shown as `#LongSlow-V (Long range / Slow)`. It is OK to use this initially.
+If you have been sent a QR code or link for Meshtastic, then skip ahead to [Join a Channel](#join-a-channel). Devices have a default channel preconfigured, shown as `#LongFast-I (Long range / Fast)`. It is OK to use this channel if you want your node to be visible to all Meshtastic users (within range) who are using the default channel.
 
 You can also create a new Channel and share the details with your group. The group is private and only those who have the details can join the group and see the messages. You will need to do this once initially, and then only when you want to change or make a new mesh network group.
 
-The Channel tab allows you to do this. This screen is initially locked so that you don't change it accidentally. Press the lock symbol, and you will be able to edit. First, select the Channel options, as shown here, and chose the most appropriate option:
+The Channel tab allows you to create a new private mesh. This screen is initially locked so that you don't change it accidentally. Press the lock symbol, and you will be able to edit. First, select the Channel options, as shown here, and chose the most appropriate option:
 
 [![Changing channel settings](/img/android/android-change-channel-sm.png)](/img/android/android-change-channel.png)
 
@@ -67,7 +72,7 @@ You will see a warning because changing the Channel will break communications wi
 
 [![Do you want to change the channel?](/img/android/android-new-channel-sm.png)](/img/android/android-new-channel.png)
 
-The app will generate a new QR code on the screen, and this encodes the channel details and a random 256-bit key for sharing with the new group. You can share the QR code with other Meshtastic users, or use the Share button and share the link via chat message, SMS, or email. The link is a very long code, for example: https://www.meshtastic.org/d/#CgUYAyIBAQ
+The app will generate a new QR code on the screen.  This encodes the channel details and a random 256-bit key for sharing with the new group. You can share the QR code with other Meshtastic users, or use the Share button and share the link via chat message, SMS, or email. The link is a very long code, for example: https://www.meshtastic.org/d/#CgUYAyIBAQ
 
 ### Join a channel
 
@@ -112,17 +117,17 @@ You can test changing channels with the QR code shown below.
 
 [![Messages](/img/android/android-messages-sm.png)](/img/android/android-messages.png)
 
-The message window operates like most messaging apps. Note that the `(All) Primary channel` contact is always shown and works as a group chat. Other contacts are for Direct Messaging, or private chat.
+The message window operates like most messaging apps. Note that your primary channel i.e. `LongFast` contact is always shown and works as a group chat. Other contacts are for direct messaging, or private group chats.
 
 - Long press contacts or messages for options, like delete.
-- Long press a node from the Nodes tab to send Direct Messages.
+- Press a node from the Nodes tab to send Direct Messages.
 
-With LoRa (or any radio) there is some uncertainty that the messages has been received, so there is a confirmation built-in to the protocol. There are small icons shown to the right of the messages you send:
+With LoRa (or any radio) there is some uncertainty that the message has been received, so there is a confirmation built-in to the protocol. There are small icons shown to the right of the messages you send:
 
 - Cloud with an up arrow: the message is queued in the app, waiting to be handed to the device.
 - Cloud only: the device received the message from the app, and it has been sent and transmitted via LoRa.
 - Cloud with a check mark: received at least one node's acknowledgement response. Confirmations could be from any one device.
-- Person with a check mark - The intended recipient of your direct message acknowledged the message.
+- Person with a check mark - The intended recipient node of your direct message acknowledged the message.
 - Cloud crossed out: the initial sender did not receive any confirmation within a certain timeout.
 
 By default there is no long-term store-and-forward of messages, so messages not received during transmission are lost.
@@ -131,19 +136,25 @@ By default there is no long-term store-and-forward of messages, so messages not
 
 [![Local Meshtastic network](/img/android/android-nodes-sm.png)](/img/android/android-nodes.png)
 
-The network list shows all the users (devices) that have connected to the same Channel. For each entry, it shows the last time they were active, their location and distance (when available), and their last known power status. In the example above, Lora V2 is the local user, m8n was last heard from 3 minutes ago and is 29m away, and 25C is active and 498m away.
+The network list shows all the users (devices) that have connected to the same Channel. For each entry, it shows the last time they were active, their location and distance (when available), and their last known power status. In the example above, Monkey is the local user, Rabbit was last heard from 10 minutes ago and is 50m away, and Panda was last heard 11 minutes ago and 5m away.
 
-This is a list of network nodes, unnamed nodes are shown as `Unknown a3c9` (where `a3c9` is the last 4 hex digits from the MAC address.)
-
-- Long press a node from the list to send Direct Messages.
+- Tap on a node from the list to start Direct Messaging, request a position update, or request a [traceroute](/docs/settings/moduleconfig/traceroute).
+- If you have an [Admin Channel](/docs/configuration/remote-admin) enabled on your devices, tapping on the node will also display an option to remotely configure the node.
 
 ### View the map
 
-[![Mapping provided by Mapbox](/img/android/android-map-sm.png)](/img/android/android-map.png)
+[![Meshtastic Map View](/img/android/android-map-sm.png)](/img/android/android-map.png)
 
-The Map tab will show a local map with an icon for each active mesh node that has a known position. The users names are shown against the icon.
+The Map tab will show a local map with an icon for each active mesh node that has a known position. The users names are shown above the icon.
 
-The map is provided by [Mapbox](https://docs.mapbox.com/help/how-mapbox-works) (free-tier), and the map data is sourced from [OpenStreetMap OSM](https://www.openstreetmap.org). Mapbox currently requires analytics to be enabled for you to use their mapping system. There is currently no off-line maps (phone needs mobile data or Wifi), although this will be improved in the future. If you don't see the features that you'd expect on the map then head over to [OpenStreetMap OSM](https://www.openstreetmap.org) where you can contribute new data to the map.
+
+[![Map Layers](/img/android/android-map-layers-c.png)](/img/android/android-map-layers.png)
+
+- Clicking the layers icon in the top-right will allow you to select the map type.
+
+[![Download offline maps](/img/android/android-map-download-c.png)](/img/android/android-map-download.png)
+
+- Some map types allow downloading for offline use.  If offline maps are available for your selected map type, a download icon will appear in the bottom-right corner of the map.  Tap this icon and choose the option to Download Region, then select the area you wish to download.
 
 ## Configuration options
 
@@ -157,28 +168,39 @@ Pressing the three vertical dots in the top right corner shows the configuration
 
 The debug panel allows you to see all packets sent between the application and the device. This can be useful for debugging purposes.
 
-### Advanced settings
+### Radio Configuration
 
-[![Advanced settings](/img/android/android-advanced-settings-c.png)](/img/android/android-advanced-settings.png)
+[![Meshtastic configuration options](/img/android/android-radio-configuration-c.png)](/img/android/android-radio-configuration.png)
 
-#### Broadcast position period
-
-This allows you to disable or change the frequency with which your location is broadcast across the mesh. By default, this is set to 900 seconds (15 minutes). The minimum time this can be set for the default channel is 375 seconds, the reasons for which have been [discussed on the forum](https://meshtastic.discourse.group/t/lost-messages-while-testing/2455/19).
-
-#### Device sleep period (now disabled by default & no longer recommended)
-
-ESP32 devices can enter sleep mode to save battery life. During sleep Bluetooth is turned off. This setting allows the length of the sleep mode to be changed from the default 300 seconds (5 minutes). After this time period, they awake to check the phone for any queued messages and then go back to sleep, alternating between sleep and awake states. Receiving a message over LoRa (the LoRa receiver never switches off) or pressing a program button (if there is one on the device) also awakes the device.
+Radio Configuration opens a list of all radio and module configuration settings.
+- See [Device Config](/docs/settings/config) for radio settings.
+- See [Module Config](/docs/settings/moduleconfig) for module settings.
+- At the end of this list are buttons for Reboot, Shutdown, Factory reset, and NodeDB reset.
 
 ### Export rangetest.csv
 
-This allows you to save all your position data with GPS coordinates into a .csv (comma separated value) file on your phone. This feature is similar but independent from the device range test module, and results may differ.
+Allows you to save all your network's position data with GPS coordinates into a .csv (comma separated value) file on your phone. This file can be imported into the spreadsheet application of your choice for easy viewing. This feature is similar but independent from the device [range test module](/docs/settings/moduleconfig/range-test), and results may differ.
 
 ### Theme
 
 [![Meshtastic theme](/img/android/android-settings-theme-c.png)](/img/android/android-settings-theme.png)
 
-This allows you to change between light and dark themes, or to select the system default.
+Allows you to change between light and dark themes, or to select the system default.
+
+### Language
+
+Allows you to select a language for the application's user interface.
+
+### Show Introduction
+
+Opens the introduction slideshow.
+
+### Quick chat options
+
+[![Quick Chat](/img/android/android-quick-chat-sm.png)](/img/android/android-quick-chat.png)
+
+Brings up an editor to create and edit quick response messages. These will appear as buttons in the chat window.  Messages have the option to send instantly, or be appended to your message and sent manually.
 
 ### About
 
-Clicking this shows the current app version.
+Displays the current app version.