diff --git a/src/courseware/course/CourseBreadcrumbs.jsx b/src/courseware/course/CourseBreadcrumbs.jsx
index eb6e2ca3..febfdadc 100644
--- a/src/courseware/course/CourseBreadcrumbs.jsx
+++ b/src/courseware/course/CourseBreadcrumbs.jsx
@@ -57,6 +57,12 @@ export default function CourseBreadcrumbs({
     return [];
   }, [courseStatus, sequenceStatus]);
 
+  // These should be reverted after the REV1512 experiment
+  const userAgent = typeof window.navigator === 'undefined' ? '' : navigator.userAgent;
+  const isMobile = Boolean(
+    userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile|WPDesktop/i),
+  );
+
   return (
     <nav aria-label="breadcrumb" className="my-4">
       <ol className="list-unstyled d-flex m-0">
@@ -87,7 +93,7 @@ export default function CourseBreadcrumbs({
         ))}
         {/* The below block of code should be reverted after the REV1512 experiment */}
         {REV1512FlyoverEnabled
-        && (
+        && !isMobile && (
         <div
           className="toggleFlyoverButton"
           aria-hidden="true"
diff --git a/src/courseware/course/sequence/Sequence.jsx b/src/courseware/course/sequence/Sequence.jsx
index c93b1365..5a4018f8 100644
--- a/src/courseware/course/sequence/Sequence.jsx
+++ b/src/courseware/course/sequence/Sequence.jsx
@@ -315,6 +315,9 @@ function Sequence({
               sequenceId={sequenceId}
               unitId={unitId}
               className="mb-4"
+              toggleREV1512Flyover={toggleREV1512Flyover} /* This line should be reverted after REV1512 experiment */
+              REV1512FlyoverEnabled={REV1512FlyoverEnabled} /* This line should be reverted after REV1512 experiment */
+              isREV1512FlyoverVisible={isREV1512FlyoverVisible} /* should be reverted after REV1512 experiment */
               nextSequenceHandler={() => {
                 logEvent('edx.ui.lms.sequence.next_selected', 'top');
                 handleNext();
diff --git a/src/courseware/course/sequence/sequence-navigation/SequenceNavigation.jsx b/src/courseware/course/sequence/sequence-navigation/SequenceNavigation.jsx
index 5825e5d3..30147b84 100644
--- a/src/courseware/course/sequence/sequence-navigation/SequenceNavigation.jsx
+++ b/src/courseware/course/sequence/sequence-navigation/SequenceNavigation.jsx
@@ -25,6 +25,9 @@ function SequenceNavigation({
   nextSequenceHandler,
   previousSequenceHandler,
   goToCourseExitPage,
+  toggleREV1512Flyover, /* This line should be reverted after the REV1512 experiment */
+  REV1512FlyoverEnabled, /* This line should be reverted after the REV1512 experiment */
+  isREV1512FlyoverVisible, /* This line should be reverted after the REV1512 experiment */
 }) {
   const sequence = useModel('sequences', sequenceId);
   const { isFirstUnit, isLastUnit } = useSequenceNavigationMetadata(sequenceId, unitId);
@@ -70,6 +73,12 @@ function SequenceNavigation({
     );
   };
 
+  // These should be reverted after the REV1512 experiment
+  const userAgent = typeof window.navigator === 'undefined' ? '' : navigator.userAgent;
+  const isMobile = Boolean(
+    userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile|WPDesktop/i),
+  );
+
   return sequenceStatus === LOADED && (
     <nav className={classNames('sequence-navigation', className)}>
       <Button variant="link" className="previous-btn" onClick={previousSequenceHandler} disabled={isFirstUnit}>
@@ -78,6 +87,21 @@ function SequenceNavigation({
       </Button>
       {renderUnitButtons()}
       {renderNextButton()}
+      {REV1512FlyoverEnabled
+        && isMobile && (
+        <div
+          className="toggleFlyoverButton toggleFlyoverButtonMobile"
+          aria-hidden="true"
+          style={{ borderBottom: isREV1512FlyoverVisible() ? '2px solid #00262b' : 'none' }}
+          onClick={() => {
+            toggleREV1512Flyover();
+          }}
+        >
+          <svg width="54" height="40" viewBox="0 0 54 40" fill="none" xmlns="http://www.w3.org/2000/svg">
+            <rect x="0.5" y="0.5" width="53" height="39" rx="1.5" fill="white" stroke="#E7E8E9" /><path d="M36 20C36 15.6 32.4 12 28 12C27.7 12 27.5 12.2 27.5 12.5C27.5 12.8 27.7 13 28 13C31.85 13 35 16.15 35 20C35 23.85 31.85 27 28 27C24.15 27 21 23.85 21 20C21 19.7 20.8 19.5 20.5 19.5C20.3 19.5 20.1 19.65 20.05 19.8C20 19.85 20 19.95 20 20C20 24.4 23.6 28 28 28C32.4 28 36 24.4 36 20Z" fill="black" stroke="black" strokeWidth="0.6" /><path d="M23.1065 14.52C22.9403 14.36 22.691 14.36 22.5247 14.52C22.3585 14.68 22.3585 14.92 22.5247 15.08C22.6078 15.16 22.7325 15.2 22.8156 15.2C22.9403 15.2 23.0234 15.16 23.1065 15.08C23.2312 14.96 23.2312 14.68 23.1065 14.52Z" fill="black" stroke="black" strokeWidth="0.6" /><path d="M27.6848 15.2C27.3939 15.2 27.2 15.3973 27.2 15.6932V19.6384C27.2 19.6877 27.2 19.7863 27.2484 19.8356C27.2969 19.8849 27.2969 19.9343 27.3454 19.9836L29.5757 22.2521C29.6727 22.3507 29.8181 22.4 29.9151 22.4C30.0121 22.4 30.1575 22.3507 30.2545 22.2521C30.4484 22.0548 30.4484 21.7589 30.2545 21.5617L28.1696 19.4411V15.6932C28.1696 15.3973 27.9757 15.2 27.6848 15.2Z" fill="black" stroke="black" strokeWidth="0.6" /><circle cx="35.5" cy="14.5" r="4.5" fill="#C32D3A" />
+          </svg>
+        </div>
+      )}
       <div className="rev1512ToggleFlyoverSequenceLocation" />
     </nav>
   );
@@ -92,6 +116,9 @@ SequenceNavigation.propTypes = {
   nextSequenceHandler: PropTypes.func.isRequired,
   previousSequenceHandler: PropTypes.func.isRequired,
   goToCourseExitPage: PropTypes.func.isRequired,
+  toggleREV1512Flyover: PropTypes.func.isRequired, /* This line should be reverted after the REV1512 experiment */
+  REV1512FlyoverEnabled: PropTypes.bool.isRequired, /* This line should be reverted after the REV1512 experiment */
+  isREV1512FlyoverVisible: PropTypes.func.isRequired, /* This line should be reverted after the REV1512 experiment */
 };
 
 SequenceNavigation.defaultProps = {