diff --git a/ajax/networking/get_frequencies.php b/ajax/networking/get_frequencies.php
new file mode 100644
index 00000000..7fb29990
--- /dev/null
+++ b/ajax/networking/get_frequencies.php
@@ -0,0 +1,42 @@
+<?php
+
+require '../../includes/csrf.php';
+require_once '../../includes/config.php';
+require_once '../../includes/locale.php';
+
+if (isset($_POST['interface'])) {
+
+    define( 'NL80211_BAND_24GHZ', 0x1 );
+    define( 'NL80211_BAND_5GHZ', 0x2 );
+    $iface = escapeshellcmd($_POST['interface']);
+
+    // get physical device for selected interface
+    exec("iw dev | awk '/$iface/ {print line}{line = $0}'", $return);
+    $phy = $return[0];
+
+    // get frequencies supported by device
+    exec('iw '.$phy.' info | sed -rn "s/^.*\*\s([0-9]{4})\sMHz.*/\1/p"', $frequencies);
+    
+    if (count(preg_grep('/^24[0-9]{2}/i', $frequencies)) >0) {
+        $flags += NL80211_BAND_24GHZ;
+    }
+    if (count(preg_grep('/^5[0-9]{3}/i', $frequencies)) >0) {
+        $flags += NL80211_BAND_5GHZ;
+    }
+
+    switch ($flags) {
+    case NL80211_BAND_24GHZ:
+        $msg = sprintf(_("The selected interface (%s) has support for the 2.4 GHz wireless band only."), $iface);
+        break;
+    case NL80211_BAND_5GHZ:
+        $msg = sprintf(_("The selected interface (%s) has support for the 5 GHz wireless band only."), $iface);
+        break;
+    case NL80211_BAND_24GHZ | NL80211_BAND_5GHZ:
+        $msg = sprintf(_("The selected interface (%s) has support for both the 2.4 and 5 GHz wireless bands."), $iface);
+        break;
+    default:
+        $msg = sprintf(_("The selected interface (%s) does not support wireless mode operation."), $iface);
+    }
+    echo json_encode($msg);
+}
+
diff --git a/app/icons/site.webmanifest b/app/icons/site.webmanifest
index 321ab7db..5d0d01c4 100644
--- a/app/icons/site.webmanifest
+++ b/app/icons/site.webmanifest
@@ -3,7 +3,7 @@
     "short_name": "RaspAP",
     "icons": [
         {
-            "src": "/dist/icons/android-chrome-192x192.png",
+            "src": "/app/icons/android-chrome-192x192.png",
             "sizes": "192x192",
             "type": "image/png"
         }
diff --git a/app/js/custom.js b/app/js/custom.js
index 6483614b..1412b44f 100644
--- a/app/js/custom.js
+++ b/app/js/custom.js
@@ -183,6 +183,7 @@ function contentLoaded() {
             break;
         case "hostapd_conf":
             loadChannel();
+            setHardwareModeTooltip();
             break;
         case "dhcpd_conf":
             loadInterfaceDHCPSelect();
@@ -387,6 +388,21 @@ function loadChannelSelect(selected) {
     });
 }
 
+/* Sets hardware mode tooltip text for selected interface.
+ */
+function setHardwareModeTooltip() {
+    var iface = $('#cbxinterface').val();
+    var hwmodeText = '';
+    // Explanatory text if 802.11ac is disabled
+    if ($('#cbxhwmode').find('option[value="ac"]').prop('disabled') == true ) {
+        var hwmodeText = $('#hwmode').attr('data-tooltip');
+    }
+    $.post('ajax/networking/get_frequencies.php?',{'interface': iface},function(data){
+        var responseText = JSON.parse(data);
+        $('#tiphwmode').attr('data-original-title', responseText + '\n' + hwmodeText );
+    });
+}
+
 /* Updates the selected blocklist
  * Request is passed to an ajax handler to download the associated list.
  * Interface elements are updated to indicate current progress, status.
diff --git a/includes/firewall.php b/includes/firewall.php
old mode 100644
new mode 100755
diff --git a/includes/functions.php b/includes/functions.php
index 2971a329..35d285cf 100755
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -792,3 +792,14 @@ function get_public_ip()
     return $public_ip[0];
 }
 
+/* Returns a standardized tooltip
+ *
+ * @return string $tooltip
+ */
+function getTooltip($msg, $id, $visible = true, $data_html = false)
+{
+    ($visible) ? $opt1 = 'visible' : $opt1 = 'invisible';
+    ($data_html) ? $opt2 = 'data-html="true"' : $opt2 = 'data-html="false"';
+    echo '<i class="fas fa-question-circle text-muted ' .$opt1.'" id="' .$id. '" data-toggle="tooltip" ' .$opt2. ' data-placement="auto" title="' . _($msg). '"></i>';
+}
+
diff --git a/includes/get_clients.php b/includes/get_clients.php
old mode 100644
new mode 100755
diff --git a/includes/hostapd.php b/includes/hostapd.php
index d1160d6d..7f47cd7d 100755
--- a/includes/hostapd.php
+++ b/includes/hostapd.php
@@ -25,7 +25,7 @@ function DisplayHostAPDConfig()
         'b' => '802.11b - 2.4 GHz',
         'g' => '802.11g - 2.4 GHz',
         'n' => '802.11n - 2.4 GHz',
-        'ac' => '802.11.ac - 5 GHz'
+        'ac' => '802.11ac - 5 GHz'
     ];
     $arrSecurity = array(1 => 'WPA', 2 => 'WPA2', 3 => 'WPA+WPA2', 'none' => _("None"));
     $arrEncType = array('TKIP' => 'TKIP', 'CCMP' => 'CCMP', 'TKIP CCMP' => 'TKIP+CCMP');
@@ -109,6 +109,30 @@ function DisplayHostAPDConfig()
         $txpower = $_POST['txpower'];
     }
 
+    $countries_5Ghz_max48ch = RASPI_5GHZ_ISO_ALPHA2;
+    $selectedHwMode = $arrConfig['hw_mode'];
+    if (isset($arrConfig['ieee80211n'])) {
+        if (strval($arrConfig['ieee80211n']) === '1') {
+            $selectedHwMode = 'n';
+        }
+    }
+    if (isset($arrConfig['ieee80211ac'])) {
+        if (strval($arrConfig['ieee80211ac']) === '1') {
+            $selectedHwMode = 'ac';
+        }
+    }
+    if (isset($arrConfig['ieee80211w'])) {
+        if (strval($arrConfig['ieee80211w']) === '2') {
+            $selectedHwMode = 'w';
+        }
+    }
+    if (!in_array($arrConfig['country_code'], $countries_5Ghz_max48ch)) {
+        $hwModeDisabled = 'ac';
+        if ($selectedHwMode === $hwModeDisabled) {
+            unset($selectedHwMode);
+        }
+    }
+
     echo renderTemplate(
         "hostapd", compact(
             "status",
@@ -124,7 +148,9 @@ function DisplayHostAPDConfig()
             "arrTxPower",
             "txpower",
             "arrHostapdConf",
-            "operatingSystem"
+            "operatingSystem",
+            "selectedHwMode",
+            "hwModeDisabled"
         )
     );
 }
diff --git a/includes/wireguard.php b/includes/wireguard.php
old mode 100644
new mode 100755
diff --git a/locale/en_US/LC_MESSAGES/messages.mo b/locale/en_US/LC_MESSAGES/messages.mo
index f8d9ba40..c1a7c5c7 100644
Binary files a/locale/en_US/LC_MESSAGES/messages.mo and b/locale/en_US/LC_MESSAGES/messages.mo differ
diff --git a/locale/en_US/LC_MESSAGES/messages.po b/locale/en_US/LC_MESSAGES/messages.po
index 1b51ca08..fd1ff0c1 100644
--- a/locale/en_US/LC_MESSAGES/messages.po
+++ b/locale/en_US/LC_MESSAGES/messages.po
@@ -585,6 +585,21 @@ msgstr "Sets the <code>txpower</code> option for the AP interface and the config
 msgid "dBm is a unit of level used to indicate that a power ratio is expressed in decibels (dB) with reference to one milliwatt (mW). 30 dBm is equal to 1000 mW, while 0 dBm equals 1.25 mW."
 msgstr "dBm is a unit of level used to indicate that a power ratio is expressed in decibels (dB) with reference to one milliwatt (mW). 30 dBm is equal to 1000 mW, while 0 dBm equals 1.25 mW."
 
+msgid "The selected interface (%s) has support for the 2.4 GHz wireless band only."
+msgstr "The selected interface (%s) has support for the 2.4 GHz wireless band only."
+
+msgid "The selected interface (%s) has support for the 2.5 GHz wireless band only."
+msgstr "The selected interface (%s) has support for the 2.5 GHz wireless band only."
+
+msgid "The selected interface (%s) has support for both the 2.4 and 5 GHz wireless bands."
+msgstr "The selected interface (%s) has support for both the 2.4 and 5 GHz wireless bands."
+
+msgid "The selected interface (%s) does not support wireless mode operation."
+msgstr "The selected interface (%s) does not support wireless mode operation."
+
+msgid "The 802.11ac 5 GHz option is disabled until a compatible wireless regulatory domain is set."
+msgstr "The 802.11ac 5 GHz option is disabled until a compatible wireless regulatory domain is set."
+
 #: includes/networking.php
 msgid "Summary"
 msgstr "Summary"
diff --git a/templates/hostapd/advanced.php b/templates/hostapd/advanced.php
index 89d90c72..d765d34c 100644
--- a/templates/hostapd/advanced.php
+++ b/templates/hostapd/advanced.php
@@ -56,10 +56,8 @@
     <div class="row">
       <div class="form-group col-md-6">
         <label for="cbxtxpower"><?php echo _("Transmit power (dBm)") ?></label>
-        <i class="fas fa-question-circle text-muted" data-toggle="tooltip" data-placement="auto" title="<?php echo _("dBm is a unit of level used to indicate that a power ratio is expressed in decibels (dB) with reference to one milliwatt (mW). 30 dBm is equal to 1000 mW, while 0 dBm equals 1.25 mW."); ?>"></i>
-        <?php
-          SelectorOptions('txpower', $arrTxPower, $txpower, 'cbxtxpower');
-        ?>
+        <?php getTooltip('dBm is a unit of level used to indicate that a power ratio is expressed in decibels (dB) with reference to one milliwatt (mW). 30 dBm is equal to 1000 mW, while 0 dBm equals 1.25 mW.', 'tiptxpower'); ?>
+        <?php SelectorOptions('txpower', $arrTxPower, $txpower, 'cbxtxpower'); ?>
         <small id="txpower_help" class="text-muted"><?php echo _("Sets the <code>txpower</code> option for the AP interface and the configured country."); ?></small>
       </div>
     </div>
diff --git a/templates/hostapd/basic.php b/templates/hostapd/basic.php
index 90fd18d2..f421490d 100644
--- a/templates/hostapd/basic.php
+++ b/templates/hostapd/basic.php
@@ -3,9 +3,7 @@
   <div class="row">
     <div class="form-group col-md-6">
       <label for="cbxinterface"><?php echo _("Interface") ;?></label>
-      <?php
-        SelectorOptions('interface', $interfaces, $arrConfig['interface'], 'cbxinterface');
-      ?>
+      <?php SelectorOptions('interface', $interfaces, $arrConfig['interface'], 'cbxinterface', 'setHardwareModeTooltip'); ?>
     </div>
   </div>
   <div class="row">
@@ -17,32 +15,9 @@
   <div class="row">
     <div class="form-group col-md-6">
       <label for="cbxhwmode"><?php echo _("Wireless Mode") ;?></label>
-      <?php
-      $countries_5Ghz_max48ch = RASPI_5GHZ_ISO_ALPHA2;
-      $selectedHwMode = $arrConfig['hw_mode'];
-      if (isset($arrConfig['ieee80211n'])) {
-          if (strval($arrConfig['ieee80211n']) === '1') {
-              $selectedHwMode = 'n';
-          }
-      }
-      if (isset($arrConfig['ieee80211ac'])) {
-          if (strval($arrConfig['ieee80211ac']) === '1') {
-              $selectedHwMode = 'ac';
-          }
-      }
-      if (isset($arrConfig['ieee80211w'])) {
-          if (strval($arrConfig['ieee80211w']) === '2') {
-              $selectedHwMode = 'w';
-          }
-      }
-
-      if (!in_array($arrConfig['country_code'], $countries_5Ghz_max48ch)) {
-          $hwModeDisabled = 'ac';
-          if ($selectedHwMode === $hwModeDisabled) {
-              unset($selectedHwMode);
-          }
-      }
-      SelectorOptions('hw_mode', $arr80211Standard, $selectedHwMode, 'cbxhwmode', 'loadChannelSelect', $hwModeDisabled); ?>
+      <?php getTooltip(null, 'tiphwmode', true); ?>
+      <?php SelectorOptions('hw_mode', $arr80211Standard, $selectedHwMode, 'cbxhwmode', 'loadChannelSelect', $hwModeDisabled); ?>
+      <div id="hwmode" data-tooltip="<?php echo _("The 802.11ac 5 GHz option is disabled until a compatible wireless regulatory domain is set."); ?>"></div>
     </div>
   </div>
   <div class="row">