diff --git a/CleverTapSDK/CTPreferences.h b/CleverTapSDK/CTPreferences.h
index cab14306..01c40062 100644
--- a/CleverTapSDK/CTPreferences.h
+++ b/CleverTapSDK/CTPreferences.h
@@ -27,4 +27,6 @@
 
 + (NSString *_Nonnull)filePathfromFileName:(NSString *_Nonnull)filename;
 
++ (void) migrateCTUserDefaultsData;
+
 @end
diff --git a/CleverTapSDK/CTPreferences.m b/CleverTapSDK/CTPreferences.m
index 72edd22a..804bc0f5 100644
--- a/CleverTapSDK/CTPreferences.m
+++ b/CleverTapSDK/CTPreferences.m
@@ -2,12 +2,14 @@
 #import "CTConstants.h"
 
 #define PREF_PREFIX @"WizRocket"
+#define SUITE_NAME @"CleverTap"
 
 @implementation CTPreferences
 
 + (long)getIntForKey:(NSString *)key withResetValue:(long)resetValue {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     id value = [defaults objectForKey:key];
     if ([value isKindOfClass:[NSNumber class]]) {
         return ((long) [value longLongValue]);
@@ -20,14 +22,16 @@ + (long)getIntForKey:(NSString *)key withResetValue:(long)resetValue {
 
 + (void)putInt:(long)resetValue forKey:(NSString *)key {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     [defaults setObject:@(resetValue) forKey:key];
     [defaults synchronize];
 }
 
 + (NSString *_Nullable)getStringForKey:(NSString *_Nonnull)key withResetValue:(NSString *_Nullable)resetValue {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     id value = [defaults objectForKey:key];
     if ([value isKindOfClass:[NSString class]]) {
         return value;
@@ -42,27 +46,31 @@ + (NSString *_Nullable)getStringForKey:(NSString *_Nonnull)key withResetValue:(N
 
 + (void)putString:(NSString *)resetValue forKey:(NSString *)key {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     [defaults setObject:resetValue forKey:key];
     [defaults synchronize];
 }
 
 + (id)getObjectForKey:(NSString *)key {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     return [defaults objectForKey:key];
 }
 
 + (void)putObject:(id)object forKey:(NSString *)key {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     [defaults setObject:object forKey:key];
     [defaults synchronize];
 }
 
 + (void)removeObjectForKey:(NSString *)key {
     key = [NSString stringWithFormat:@"%@%@", PREF_PREFIX, key];
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
     [defaults removeObjectForKey:key];
     [defaults synchronize];
 }
@@ -191,4 +199,21 @@ + (NSString * _Nonnull)storageKeyWithSuffix: (NSString * _Nonnull)suffix config:
     return [NSString stringWithFormat:@"%@:%@", config.accountId, suffix];
 }
 
++ (void)migrateCTUserDefaultsData{
+    NSUserDefaults *standardDefaults = [NSUserDefaults standardUserDefaults];
+    NSDictionary *standardDefaultsDict = [standardDefaults dictionaryRepresentation];
+    NSUserDefaults *ctDefaults = [[NSUserDefaults alloc] initWithSuiteName:SUITE_NAME];
+
+    for (NSString *key in standardDefaultsDict) {
+        if ([key containsString:PREF_PREFIX]){
+            id value = standardDefaultsDict[key];
+            [ctDefaults setObject:value forKey:key];
+            [standardDefaults removeObjectForKey:key];
+        }
+    }
+    
+    [standardDefaults synchronize];
+    [ctDefaults synchronize];
+}
+
 @end
diff --git a/CleverTapSDK/CleverTapInstanceConfig.m b/CleverTapSDK/CleverTapInstanceConfig.m
index 8a3144b5..9e23d818 100644
--- a/CleverTapSDK/CleverTapInstanceConfig.m
+++ b/CleverTapSDK/CleverTapInstanceConfig.m
@@ -3,8 +3,10 @@
 #import "CTPlistInfo.h"
 #import "CTConstants.h"
 #import "CTAES.h"
+#import "CTPreferences.h"
 
 @implementation CleverTapInstanceConfig
+static BOOL userDefaultsMigrated;
 
 - (void)encodeWithCoder:(NSCoder *)coder
 {
@@ -216,6 +218,11 @@ - (void) setupPlistData:(BOOL)isDefault {
 
 - (void) checkIfAvailableAccountId:(NSString *)accountId
                        accountToken:(NSString *)accountToken {
+    // MIGRATE USER DEFAULTS HERE BECAUSE CONFIGS ARE CREATED BEFORE CT INSTANCES
+    if (!userDefaultsMigrated) {
+        [CTPreferences migrateCTUserDefaultsData];
+        userDefaultsMigrated = YES;
+    }
     if (accountId.length <= 0) {
         CleverTapLogStaticInfo("CleverTap accountId is empty");
     }
diff --git a/CleverTapSDKTests/CTPreferencesTest.m b/CleverTapSDKTests/CTPreferencesTest.m
index b40c9975..2621ec60 100644
--- a/CleverTapSDKTests/CTPreferencesTest.m
+++ b/CleverTapSDKTests/CTPreferencesTest.m
@@ -17,12 +17,12 @@ @interface CTPreferencesTest : XCTestCase
 @implementation CTPreferencesTest
 
 - (void)setUp {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@(2333333333333333333) forKey:@"WizRocketlongValueForTesting"];
 }
 
 - (void)tearDown {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults removeObjectForKey:@"WizRocketlongValueForTesting"];
 }
 
@@ -51,7 +51,7 @@ -(void)test_putInt_withInvalidKey {
 }
 
 - (void)test_getStringForKey_withValidKey {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@"stringValueForTesting" forKey:@"WizRocketstringValueForTesting"];
     
     NSString *stringValue = [CTPreferences getStringForKey:@"stringValueForTesting" withResetValue:@"testResetStringValue"];
@@ -60,7 +60,7 @@ - (void)test_getStringForKey_withValidKey {
 }
 
 - (void)test_getStringForKey_withInvalidKey {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@"stringValueForTesting" forKey:@"WizRocketstringValueForTesting"];
     
     NSString *stringValue = [CTPreferences getStringForKey:@"invalidTestKey" withResetValue:@"testResetStringValue"];
@@ -83,18 +83,18 @@ -(void)test_putString_withInvalidKey {
 }
 
 - (void)test_getObjectForKey_withValidKey {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@"stringValueForTesting" forKey:@"WizRocketstringValueForTesting"];
-
+    
     id idValue = [CTPreferences getObjectForKey:@"stringValueForTesting"];
     
     XCTAssertEqualObjects(idValue, @"stringValueForTesting");
 }
 
 - (void)test_getObjectForKey_withInvalidKey {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@"stringValueForTesting" forKey:@"WizRocketstringValueForTesting"];
-
+    
     id idValue = [CTPreferences getObjectForKey:@"invalidTestStringKey"];
     
     XCTAssertNil(idValue);
@@ -112,13 +112,42 @@ -(void)test_putObject_withInvalidKey {
 }
 
 -(void)test_removeObjectForKey {
-    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
     [defaults setObject:@"objectValueForTesting" forKey:@"WizRocketobjectValueForTesting"];
-
+    
     [CTPreferences removeObjectForKey:@"objectValueForTesting"];
     
     id checkValue = [CTPreferences getObjectForKey:@"WizRocketobjectValueForTesting"];
     
     XCTAssertNil(checkValue);
 }
+
+-(void)test_migrateCTUserDefaultsData {
+    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSUserDefaults *ctDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"CleverTap"];
+
+    // Set test data
+    [defaults setObject:@"TestValue1" forKey:@"WizRocket_TestKey1"];
+    [defaults setObject:@"TestValue2" forKey:@"WizRocket_TestKey2"];
+    [defaults setObject:@"OtherValue" forKey:@"OtherKey"];
+    [defaults synchronize];
+        
+    // Call the method to migrate data
+    [CTPreferences migrateCTUserDefaultsData];
+    
+    // Verify that data with PREF_PREFIX is migrated to CleverTap user defaults
+    XCTAssertEqualObjects([ctDefaults objectForKey:@"WizRocket_TestKey1"], @"TestValue1");
+    XCTAssertEqualObjects([ctDefaults objectForKey:@"WizRocket_TestKey2"], @"TestValue2");
+    
+    // Verify that data without PREF_PREFIX is not migrated
+    XCTAssertNil([ctDefaults objectForKey:@"OtherKey"]);
+    
+    // Verify that data with PREF_PREFIX is removed from standard user defaults
+    XCTAssertNil([defaults objectForKey:@"WizRocket_TestKey1"]);
+    XCTAssertNil([defaults objectForKey:@"WizRocket_TestKey2"]);
+    
+    // Verify that data without PREF_PREFIX is not removed from standard user defaults
+    XCTAssertEqualObjects([defaults objectForKey:@"OtherKey"], @"OtherValue");
+}
+
 @end