diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
index 6b0519d392..30b2ee8642 100755
--- a/tools/ci_build/build.py
+++ b/tools/ci_build/build.py
@@ -1090,12 +1090,8 @@ def setup_dml_build(args, cmake_path, build_dir, configs):
             run_subprocess(cmd_args)
 
 
-def adb_push(source_dir, src, dest, **kwargs):
-    return run_subprocess(
-        [os.path.join(
-            source_dir, 'tools', 'ci_build',
-            'github', 'android', 'adb-push.sh'),
-         src, dest], **kwargs)
+def adb_push(src, dest, **kwargs):
+    return run_subprocess(['adb', 'push', src, dest], **kwargs)
 
 
 def adb_shell(*args, **kwargs):
@@ -1152,17 +1148,12 @@ def run_onnxruntime_tests(args, source_dir, ctest_path, build_dir, configs):
             run_subprocess(os.path.join(
                 source_dir, 'tools', 'ci_build', 'github', 'android',
                 'start_android_emulator.sh'))
-            adb_push(source_dir, 'testdata', '/data/local/tmp/', cwd=cwd)
+            adb_push('testdata', '/data/local/tmp/', cwd=cwd)
             adb_push(
-                source_dir,
-                os.path.join(source_dir, 'cmake', 'external', 'onnx', 'onnx',
-                             'backend', 'test'),
+                os.path.join(source_dir, 'cmake', 'external', 'onnx', 'onnx', 'backend', 'test'),
                 '/data/local/tmp/', cwd=cwd)
-            adb_push(
-                source_dir, 'onnxruntime_test_all', '/data/local/tmp/',
-                cwd=cwd)
-            adb_push(
-                source_dir, 'onnx_test_runner', '/data/local/tmp/', cwd=cwd)
+            adb_push('onnxruntime_test_all', '/data/local/tmp/', cwd=cwd)
+            adb_push('onnx_test_runner', '/data/local/tmp/', cwd=cwd)
             adb_shell(
                 'cd /data/local/tmp && /data/local/tmp/onnxruntime_test_all')
             if args.use_dnnlibrary or args.use_nnapi:
diff --git a/tools/ci_build/github/android/start_android_emulator.sh b/tools/ci_build/github/android/start_android_emulator.sh
index c24ca7b0e0..4158b81afd 100755
--- a/tools/ci_build/github/android/start_android_emulator.sh
+++ b/tools/ci_build/github/android/start_android_emulator.sh
@@ -10,7 +10,7 @@ echo "no" | $ANDROID_HOME/tools/bin/avdmanager create avd -n android_emulator -k
 echo "Starting emulator"
 
 # Start emulator in background
-nohup $ANDROID_HOME/emulator/emulator -avd android_emulator -partition-size 2048 -no-snapshot -no-audio &
+nohup $ANDROID_HOME/emulator/emulator -avd android_emulator -partition-size 2048 -memory 3072 -timezone America/Los_Angeles -no-snapshot -no-audio -no-boot-anim -no-window &
 
 $ANDROID_HOME/platform-tools/adb start-server
 
@@ -18,4 +18,3 @@ echo "Waiting for device to come online"
 adb wait-for-device shell 'while [[ -z $(getprop sys.boot_completed) ]]; do sleep 1; done; input keyevent 82'
 
 echo "Emulator is online"
-
diff --git a/tools/ci_build/github/azure-pipelines/android-x86_64-crosscompile-ci-pipeline.yml b/tools/ci_build/github/azure-pipelines/android-x86_64-crosscompile-ci-pipeline.yml
index 16468909ff..7295d954e4 100644
--- a/tools/ci_build/github/azure-pipelines/android-x86_64-crosscompile-ci-pipeline.yml
+++ b/tools/ci_build/github/azure-pipelines/android-x86_64-crosscompile-ci-pipeline.yml
@@ -3,7 +3,7 @@ jobs:
   pool:
     vmImage: 'macOS-10.15'
   steps:
-    - script: brew install coreutils
-      displayName: Install coreutils
-    - script: tools/ci_build/build.py --android --build_dir build --android_sdk_path $ANDROID_HOME --android_ndk_path $ANDROID_HOME/ndk-bundle --android_abi=x86_64 --android_api=29 --skip_submodule_sync --parallel --use_nnapi
+    - script: brew install coreutils ninja
+      displayName: Install coreutils and ninja
+    - script: tools/ci_build/build.py --android --build_dir build --android_sdk_path $ANDROID_HOME --android_ndk_path $ANDROID_HOME/ndk-bundle --android_abi=x86_64 --android_api=29 --skip_submodule_sync --parallel --use_nnapi --cmake_generator=Ninja
       displayName: Build and Test on Android Emulator