diff --git a/lib/runner/cli/cli.js b/lib/runner/cli/cli.js
index 502bae1a89..1afb670120 100644
--- a/lib/runner/cli/cli.js
+++ b/lib/runner/cli/cli.js
@@ -446,7 +446,7 @@ class CliRunner {
   usingServer(test_settings = {}) {
     // TODO: selenium_host and seleniumHost are for backwards compatability.
     // remove these in future versions.
-    return  test_settings.selenium?.host || test_settings.selenium_host || test_settings.seleniumHost;
+    return Utils.isObject(test_settings.selenium) || test_settings.selenium_host || test_settings.seleniumHost;
   }
 
   isTestWorkersEnabled() {
@@ -464,7 +464,7 @@ class CliRunner {
       const {webdriver = {}} = this.testEnvSettings[env];
       const desiredCapabilities = this.testEnvSettings[env].capabilities || this.testEnvSettings[env].desiredCapabilities;
 
-      if (isMobile(desiredCapabilities) && this.usingServer(this.testEnvSettings[env])) {
+      if (isMobile(desiredCapabilities) && !this.usingServer(this.testEnvSettings[env])) {
 
         if  (Concurrency.isWorker()) {
           Logger.info('Disabling parallelism while running tests on mobile platform');
diff --git a/test/src/runner/cli/testCliRunnerParallel.js b/test/src/runner/cli/testCliRunnerParallel.js
index 186c5e996e..709725e3b2 100644
--- a/test/src/runner/cli/testCliRunnerParallel.js
+++ b/test/src/runner/cli/testCliRunnerParallel.js
@@ -227,6 +227,7 @@ describe('Test CLI Runner in Parallel', function () {
         },
         'simulator.ios': {
           selenium: {
+            host: 'localhost',
             use_appium: true
           },
           desiredCapabilities: {