diff --git a/README.md b/README.md
index d92369d..e1865c1 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ The experimental Mozac/GeckoView-based browser [SmartCookieWeb-Preview](https://
 There is still an elaborate workaround for regular Firefox (or Beta/fork) though:
 * install an old version of Firefox (like v68.11.0 from [archive.mozilla.org](https://archive.mozilla.org/pub/mobile/releases/68.11.0/) or [apkmirror.com](https://www.apkmirror.com/apk/mozilla/firefox/firefox-68-11-0-release)); first you have to remove your current Firefox app.\
 Specifically for the add-on you can also use Firefox Beta or a Firefox-fork like [Fennec F-Droid](https://f-droid.org/packages/org.mozilla.fennec_fdroid) where you can [set a custom add-on collection](https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly) (for amo-listed add-ons); again first install an old version of [Firefox Beta v68.7](https://www.apkmirror.com/apk/mozilla/firefox-beta/firefox-beta-68-7-release) or [Fennec F-droid  v68.11.0](https://www.apkmirror.com/apk/mozilla/fennec-f-droid/fennec-f-droid-68-11-0-release)
-* download add-on's xpi-file (custom version if you want to use custom sites) from [releases](https://gitlab.com/magnolia1234/bypass-paywalls-firefox-clean/-/releases) and install/open in Firefox (from downloads)
+* download add-on's xpi-file (custom version has by default host permissions for all sites) from [releases](https://gitlab.com/magnolia1234/bypass-paywalls-firefox-clean/-/releases) and install/open in Firefox (from downloads)
 * now you can update Firefox to the latest version
 * add-on will stay active & automatically updates to the latest version
 
diff --git a/changelog.txt b/changelog.txt
index 09b1900..2982cb5 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -6,6 +6,7 @@ Post-release
 Fix Automobilwoche.de (js)
 Fix Harvard Business Review (script)
 Fix National Review (cookies)
+Enable optional host permissions on Android (Firefox 120+)
 
 * v3.4.7.0 (2023-12-14)
 Add Die Presse (at)
diff --git a/options/optin/opt-in.js b/options/optin/opt-in.js
index ae41cbb..5a1a944 100644
--- a/options/optin/opt-in.js
+++ b/options/optin/opt-in.js
@@ -1,11 +1,10 @@
-"use strict";
 var ext_api = (typeof browser === 'object') ? browser : chrome;
 var url_loc = (typeof browser === 'object') ? 'firefox' : 'chrome';
 var manifestData = ext_api.runtime.getManifest();
 var navigator_ua = navigator.userAgent;
 var navigator_ua_mobile = navigator_ua.toLowerCase().includes('mobile');
 var yandex_browser = navigator_ua_mobile && (url_loc === 'chrome') && navigator_ua.toLowerCase().includes('yabrowser');
-var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && !yandex_browser);
+var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && (url_loc === 'chrome') && !yandex_browser);
 
 window.addEventListener("load", function () {
     document.getElementById("button-close").addEventListener("click", function () {
diff --git a/options/options_custom.js b/options/options_custom.js
index e039e11..7aad968 100644
--- a/options/options_custom.js
+++ b/options/options_custom.js
@@ -1,10 +1,10 @@
-var ext_api = chrome || browser;
+var ext_api = (typeof browser === 'object') ? browser : chrome;
 var url_loc = (typeof browser === 'object') ? 'firefox' : 'chrome';
 var manifestData = ext_api.runtime.getManifest();
 var navigator_ua = navigator.userAgent;
 var navigator_ua_mobile = navigator_ua.toLowerCase().includes('mobile');
 var yandex_browser = navigator_ua_mobile && (url_loc === 'chrome') && navigator_ua.toLowerCase().includes('yabrowser');
-var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && !yandex_browser);
+var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && (url_loc === 'chrome') && !yandex_browser);
 
 var useragent_options = ['', 'googlebot', 'bingbot', 'facebookbot'];
 var referer_options = ['', 'facebook', 'google', 'twitter'];
diff --git a/options/popup.js b/options/popup.js
index 1d77125..2c5d8d3 100644
--- a/options/popup.js
+++ b/options/popup.js
@@ -4,7 +4,7 @@ var manifestData = ext_api.runtime.getManifest();
 var navigator_ua = navigator.userAgent;
 var navigator_ua_mobile = navigator_ua.toLowerCase().includes('mobile');
 var yandex_browser = navigator_ua_mobile && (url_loc === 'chrome') && navigator_ua.toLowerCase().includes('yabrowser');
-var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && !yandex_browser);
+var custom_switch = ((manifestData.optional_permissions && manifestData.optional_permissions.length) || (manifestData.optional_host_permissions && manifestData.optional_host_permissions.length)) && !(navigator_ua_mobile && (url_loc === 'chrome') && !yandex_browser);
 
 function popup_show_toggle(domain, enabled) {
   if (domain && !matchDomain(['webcache.googleusercontent.com'], domain)) {