diff --git a/src/com/android/phone/ImsProvisioningLoader.java b/src/com/android/phone/ImsProvisioningLoader.java
new file mode 100644
index 0000000..a9aac26
--- /dev/null
+++ b/src/com/android/phone/ImsProvisioningLoader.java
@@ -0,0 +1,304 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.phone;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.PersistableBundle;
+import android.preference.PreferenceManager;
+import android.telephony.ims.ProvisioningManager;
+import android.telephony.ims.feature.ImsFeature;
+import android.telephony.ims.feature.MmTelFeature;
+import android.telephony.ims.stub.ImsRegistrationImplBase;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/**
+ * Provides a function to set/get Ims feature provisioning status in storage.
+ */
+public class ImsProvisioningLoader {
+    private static final String LOG_TAG = ImsProvisioningLoader.class.getSimpleName();
+
+    public static final int STATUS_NOT_SET = -1;
+    public static final int STATUS_NOT_PROVISIONED =
+            ProvisioningManager.PROVISIONING_VALUE_DISABLED;
+    public static final int STATUS_PROVISIONED =
+            ProvisioningManager.PROVISIONING_VALUE_ENABLED;
+
+    public static final int IMS_FEATURE_MMTEL = ImsFeature.FEATURE_MMTEL;
+    public static final int IMS_FEATURE_RCS = ImsFeature.FEATURE_RCS;
+
+    private static final String PROVISIONING_FILE_NAME_PREF = "imsprovisioningstatus_";
+    private static final String PREF_PROVISION_IMS_MMTEL_PREFIX = "provision_ims_mmtel_";
+
+    private Context mContext;
+    private SharedPreferences mTelephonySharedPreferences;
+    // key : sub Id, value : read from sub Id's xml and it's in-memory cache
+    private SparseArray<PersistableBundle> mSubIdBundleArray = new SparseArray<>();
+    private final Object mLock = new Object();
+
+    public ImsProvisioningLoader(Context context) {
+        mContext = context;
+        mTelephonySharedPreferences =
+                PreferenceManager.getDefaultSharedPreferences(context);
+    }
+
+    /**
+     * Get Ims feature provisioned status in storage
+     */
+    public int getProvisioningStatus(int subId, @ImsFeature.FeatureType int imsFeature,
+            int capability, @ImsRegistrationImplBase.ImsRegistrationTech int tech) {
+        initCache(subId);
+        return getImsProvisioningStatus(subId, imsFeature, tech,
+                capability);
+    }
+
+    /**
+     * Set Ims feature provisioned status in storage
+     */
+    public boolean setProvisioningStatus(int subId, @ImsFeature.FeatureType int imsFeature,
+            int capability, @ImsRegistrationImplBase.ImsRegistrationTech int tech,
+            boolean isProvisioned) {
+        initCache(subId);
+        return setImsFeatureProvisioning(subId, imsFeature, tech, capability,
+                isProvisioned);
+    }
+
+    private boolean isFileExist(int subId) {
+        File file = new File(mContext.getFilesDir(), getFileName(subId));
+        return file.exists();
+    }
+
+    private void initCache(int subId) {
+        synchronized (mLock) {
+            PersistableBundle subIdBundle = mSubIdBundleArray.get(subId, null);
+            if (subIdBundle != null) {
+                // initCache() has already been called for the subId
+                return;
+            }
+            if (isFileExist(subId)) {
+                subIdBundle = readSubIdBundleFromXml(subId);
+            } else {
+                // It should read the MMTEL capability cache as part of shared prefs and migrate
+                // over any configs for UT.
+                final int[] regTech = {ImsRegistrationImplBase.REGISTRATION_TECH_LTE,
+                        ImsRegistrationImplBase.REGISTRATION_TECH_IWLAN,
+                        ImsRegistrationImplBase.REGISTRATION_TECH_CROSS_SIM,
+                        ImsRegistrationImplBase.REGISTRATION_TECH_NR};
+                subIdBundle = new PersistableBundle();
+                for (int tech : regTech) {
+                    int UtProvisioningStatus = getUTProvisioningStatus(subId, tech);
+                    if (STATUS_PROVISIONED == UtProvisioningStatus) {
+                        setProvisioningStatusToSubIdBundle(ImsFeature.FEATURE_MMTEL, tech,
+                                MmTelFeature.MmTelCapabilities.CAPABILITY_TYPE_UT, subIdBundle,
+                                UtProvisioningStatus);
+                    }
+                }
+                saveSubIdBundleToXml(subId, subIdBundle);
+            }
+            mSubIdBundleArray.put(subId, subIdBundle);
+        }
+    }
+
+    private int getImsProvisioningStatus(int subId, int imsFeature, int tech, int capability) {
+        PersistableBundle subIdBundle = null;
+        synchronized (mLock) {
+            subIdBundle = mSubIdBundleArray.get(subId, null);
+        }
+
+        return getProvisioningStatusFromSubIdBundle(imsFeature, tech,
+                capability, subIdBundle);
+    }
+
+    private boolean setImsFeatureProvisioning(int subId, int imsFeature, int tech, int capability,
+            boolean isProvisioned) {
+        synchronized (mLock) {
+            int preValue = getImsProvisioningStatus(subId, imsFeature, tech, capability);
+            int newValue = isProvisioned ? STATUS_PROVISIONED : STATUS_NOT_PROVISIONED;
+            if (preValue == newValue) {
+                logd("already stored provisioning status " + isProvisioned + " ImsFeature "
+                        + imsFeature + " tech " + tech + " capa " + capability);
+                return false;
+            }
+
+            PersistableBundle subIdBundle = mSubIdBundleArray.get(subId, null);
+            setProvisioningStatusToSubIdBundle(imsFeature, tech, capability, subIdBundle,
+                    newValue);
+            saveSubIdBundleToXml(subId, subIdBundle);
+        }
+        return true;
+    }
+
+    private int getProvisioningStatusFromSubIdBundle(int imsFeature, int tech,
+            int capability, PersistableBundle subIdBundle) {
+        // If it doesn't exist in xml, return STATUS_NOT_SET
+        if (subIdBundle == null || subIdBundle.isEmpty()) {
+            logd("xml is empty");
+            return STATUS_NOT_SET;
+        }
+
+        PersistableBundle regTechBundle = subIdBundle.getPersistableBundle(
+                String.valueOf(imsFeature));
+        if (regTechBundle == null) {
+            logd("ImsFeature " + imsFeature + " is not exist in xml");
+            return STATUS_NOT_SET;
+        }
+
+        PersistableBundle capabilityBundle = regTechBundle.getPersistableBundle(
+                String.valueOf(tech));
+        if (capabilityBundle == null) {
+            logd("RegistrationTech " + tech + " is not exist in xml");
+            return STATUS_NOT_SET;
+        }
+
+        return getIntValueFromBundle(String.valueOf(capability), capabilityBundle);
+    }
+
+    private void setProvisioningStatusToSubIdBundle(int imsFeature, int tech,
+            int capability, PersistableBundle subIdBundle, int newStatus) {
+        PersistableBundle regTechBundle = subIdBundle.getPersistableBundle(
+                String.valueOf(imsFeature));
+        if (regTechBundle == null) {
+            regTechBundle = new PersistableBundle();
+            subIdBundle.putPersistableBundle(String.valueOf(imsFeature), regTechBundle);
+        }
+
+        PersistableBundle capabilityBundle = regTechBundle.getPersistableBundle(
+                String.valueOf(tech));
+        if (capabilityBundle == null) {
+            capabilityBundle = new PersistableBundle();
+            regTechBundle.putPersistableBundle(String.valueOf(tech), capabilityBundle);
+        }
+
+        capabilityBundle.putInt(String.valueOf(capability), newStatus);
+    }
+
+    // Default value is STATUS_NOT_SET
+    private int getIntValueFromBundle(String key, PersistableBundle bundle) {
+        return bundle.getInt(key, STATUS_NOT_SET);
+    }
+
+    // Return subIdBundle from imsprovisioningstatus_{subId}.xml
+    private PersistableBundle readSubIdBundleFromXml(int subId) {
+        String fileName = getFileName(subId);
+
+        PersistableBundle subIdBundles = new PersistableBundle();
+        File file = null;
+        FileInputStream inFile = null;
+        synchronized (mLock) {
+            try {
+                file = new File(mContext.getFilesDir(), fileName);
+                inFile = new FileInputStream(file);
+                subIdBundles = PersistableBundle.readFromStream(inFile);
+                inFile.close();
+            } catch (FileNotFoundException e) {
+                logd(e.toString());
+            } catch (IOException e) {
+                loge(e.toString());
+            } catch (RuntimeException e) {
+                loge(e.toString());
+            }
+        }
+
+        return subIdBundles;
+    }
+
+    private void saveSubIdBundleToXml(int subId, PersistableBundle subIdBundle) {
+        String fileName = getFileName(subId);
+
+        if (subIdBundle == null || subIdBundle.isEmpty()) {
+            logd("subIdBundle is empty");
+            return;
+        }
+
+        FileOutputStream outFile = null;
+        synchronized (mLock) {
+            try {
+                outFile = new FileOutputStream(new File(mContext.getFilesDir(), fileName));
+                subIdBundle.writeToStream(outFile);
+                outFile.flush();
+                outFile.close();
+            } catch (IOException e) {
+                loge(e.toString());
+            } catch (RuntimeException e) {
+                loge(e.toString());
+            }
+        }
+    }
+
+    private int getUTProvisioningStatus(int subId, int tech) {
+        return getMmTelCapabilityProvisioningBitfield(subId, tech) > 0 ? STATUS_PROVISIONED
+                : STATUS_NOT_SET;
+    }
+
+    /**
+     * @return the bitfield containing the MmTel provisioning for the provided subscription and
+     * technology. The bitfield should mirror the bitfield defined by
+     * {@link MmTelFeature.MmTelCapabilities.MmTelCapability}.
+     */
+    private int getMmTelCapabilityProvisioningBitfield(int subId, int tech) {
+        String key = getMmTelProvisioningKey(subId, tech);
+        // Default is no capabilities are provisioned.
+        return mTelephonySharedPreferences.getInt(key, 0 /*default*/);
+    }
+
+    private String getMmTelProvisioningKey(int subId, int tech) {
+        // Resulting key is provision_ims_mmtel_{subId}_{tech}
+        return PREF_PROVISION_IMS_MMTEL_PREFIX + subId + "_" + tech;
+    }
+
+    private String getFileName(int subId) {
+        // Resulting name is imsprovisioningstatus_{subId}.xml
+        return PROVISIONING_FILE_NAME_PREF + subId + ".xml";
+    }
+
+    @VisibleForTesting
+    void clear() {
+        synchronized (mLock) {
+            mSubIdBundleArray.clear();
+        }
+    }
+
+    @VisibleForTesting
+    void setProvisioningToXml(int subId, PersistableBundle subIdBundle,
+            String[] infoArray) {
+        for (String info : infoArray) {
+            String[] paramArray = info.split(",");
+            setProvisioningStatusToSubIdBundle(Integer.valueOf(paramArray[0]),
+                    Integer.valueOf(paramArray[1]), Integer.valueOf(paramArray[2]),
+                    subIdBundle, Integer.valueOf(paramArray[3]));
+        }
+        saveSubIdBundleToXml(subId, subIdBundle);
+    }
+
+    private void loge(String contents) {
+        Log.e(LOG_TAG, contents);
+    }
+
+    private void logd(String contents) {
+        Log.d(LOG_TAG, contents);
+    }
+
+}