diff --git a/src/material/tooltip/testing/BUILD.bazel b/src/material/tooltip/testing/BUILD.bazel
index 2ec994e3d042..15d01b095733 100644
--- a/src/material/tooltip/testing/BUILD.bazel
+++ b/src/material/tooltip/testing/BUILD.bazel
@@ -24,7 +24,6 @@ ng_test_library(
     srcs = ["shared.spec.ts"],
     deps = [
         ":testing",
-        "//src/cdk/platform",
         "//src/cdk/testing",
         "//src/cdk/testing/testbed",
         "//src/material/tooltip",
diff --git a/src/material/tooltip/testing/shared.spec.ts b/src/material/tooltip/testing/shared.spec.ts
index 4a3a1b834de1..5ba2daecacbc 100644
--- a/src/material/tooltip/testing/shared.spec.ts
+++ b/src/material/tooltip/testing/shared.spec.ts
@@ -5,15 +5,10 @@ import {ComponentFixture, TestBed} from '@angular/core/testing';
 import {MatTooltipModule} from '@angular/material/tooltip';
 import {MatTooltipHarness} from '@angular/material/tooltip/testing/tooltip-harness';
 import {NoopAnimationsModule} from '@angular/platform-browser/animations';
-import {Platform} from '@angular/cdk/platform';
 
 /** Shared tests to run on both the original and MDC-based tooltips. */
 export function runHarnessTests(
     tooltipModule: typeof MatTooltipModule, tooltipHarness: typeof MatTooltipHarness) {
-  // TODO(COMP-322): whether the current test device is supported by the harness. At the time of
-  // writing, we have to skip these tests on touch devices, because we don't have a way of
-  // simulating touch events. This variable should be removed once the issue is resolved.
-  let isSupported: boolean;
   let fixture: ComponentFixture<TooltipHarnessTest>;
   let loader: HarnessLoader;
 
@@ -26,25 +21,14 @@ export function runHarnessTests(
     fixture = TestBed.createComponent(TooltipHarnessTest);
     fixture.detectChanges();
     loader = TestbedHarnessEnvironment.loader(fixture);
-
-    const platform = TestBed.inject(Platform);
-    isSupported = !platform.IOS && !platform.ANDROID;
   });
 
   it('should load all tooltip harnesses', async () => {
-    if (!isSupported) {
-      return;
-    }
-
     const tooltips = await loader.getAllHarnesses(tooltipHarness);
     expect(tooltips.length).toBe(2);
   });
 
   it('should be able to show a tooltip', async () => {
-    if (!isSupported) {
-      return;
-    }
-
     const tooltip = await loader.getHarness(tooltipHarness.with({selector: '#one'}));
     expect(await tooltip.isOpen()).toBe(false);
     await tooltip.show();
@@ -52,10 +36,6 @@ export function runHarnessTests(
   });
 
   it('should be able to hide a tooltip', async () => {
-    if (!isSupported) {
-      return;
-    }
-
     const tooltip = await loader.getHarness(tooltipHarness.with({selector: '#one'}));
     expect(await tooltip.isOpen()).toBe(false);
     await tooltip.show();
@@ -65,20 +45,12 @@ export function runHarnessTests(
   });
 
   it('should be able to get the text of a tooltip', async () => {
-    if (!isSupported) {
-      return;
-    }
-
     const tooltip = await loader.getHarness(tooltipHarness.with({selector: '#one'}));
     await tooltip.show();
     expect(await tooltip.getTooltipText()).toBe('Tooltip message');
   });
 
   it('should return empty when getting the tooltip text while closed', async () => {
-    if (!isSupported) {
-      return;
-    }
-
     const tooltip = await loader.getHarness(tooltipHarness.with({selector: '#one'}));
     expect(await tooltip.getTooltipText()).toBe('');
   });