diff --git a/DeviceInfo.m b/DeviceInfo.m
index eb66a05e..5cd2fc33 100644
--- a/DeviceInfo.m
+++ b/DeviceInfo.m
@@ -12,7 +12,9 @@
 @interface DeviceInfo ()
 @end
 
-@implementation DeviceInfo
+@implementation DeviceInfo {
+    NSObject* networkInfo;
+}
 
 @synthesize versionName = _versionName;
 @synthesize buildVersionRelease = _buildVersionRelease;
@@ -25,6 +27,7 @@ @implementation DeviceInfo
 
 
 
+
 -(id) init {
     self = [super init];
     return self;
@@ -61,17 +64,16 @@ -(NSString*) phoneCarrier {
         SEL subscriberCellularProvider = NSSelectorFromString(@"subscriberCellularProvider");
         SEL carrierName = NSSelectorFromString(@"carrierName");
         if (CTTelephonyNetworkInfo && subscriberCellularProvider && carrierName) {
-            NSObject *info = [[NSClassFromString(@"CTTelephonyNetworkInfo") alloc] init];
-            id (*imp1)(id, SEL) = (id (*)(id, SEL))[info methodForSelector:subscriberCellularProvider];
-            id carrier;
+            networkInfo = [[NSClassFromString(@"CTTelephonyNetworkInfo") alloc] init];
+            id carrier = nil;
+            id (*imp1)(id, SEL) = (id (*)(id, SEL))[networkInfo methodForSelector:subscriberCellularProvider];
             if (imp1) {
-                carrier = imp1(info, subscriberCellularProvider);
+                carrier = imp1(networkInfo, subscriberCellularProvider);
             }
             NSString* (*imp2)(id, SEL) = (NSString* (*)(id, SEL))[carrier methodForSelector:carrierName];
             if (imp2) {
                 _phoneCarrier = imp2(carrier, carrierName);
             }
-            SAFE_ARC_RELEASE(info);
         }
     }
     return _phoneCarrier;
@@ -125,22 +127,20 @@ + (NSString*)getAdvertiserID:(int) maxAttempts
     Class ASIdentifierManager = NSClassFromString(@"ASIdentifierManager");
     SEL sharedManager = NSSelectorFromString(@"sharedManager");
     SEL advertisingIdentifier = NSSelectorFromString(@"advertisingIdentifier");
-    SEL UUIDString = NSSelectorFromString(@"UUIDString");
-    if (ASIdentifierManager && sharedManager && advertisingIdentifier && UUIDString) {
+    if (ASIdentifierManager && sharedManager && advertisingIdentifier) {
         id (*imp1)(id, SEL) = (id (*)(id, SEL))[ASIdentifierManager methodForSelector:sharedManager];
-        id manager;
-        id adid;
-        NSString* identifier;
+        id manager = nil;
+        NSUUID *adid = nil;
+        NSString *identifier = nil;
         if (imp1) {
             manager = imp1(ASIdentifierManager, sharedManager);
         }
-        id (*imp2)(id, SEL) = (id (*)(id, SEL))[manager methodForSelector:advertisingIdentifier];
+        NSUUID* (*imp2)(id, SEL) = (NSUUID* (*)(id, SEL))[manager methodForSelector:advertisingIdentifier];
         if (imp2) {
             adid = imp2(manager, advertisingIdentifier);
         }
-        NSString* (*imp3)(id, SEL) = (NSString* (*)(id, SEL))[adid methodForSelector:UUIDString];
-        if (imp3) {
-            identifier = imp3(adid, UUIDString);
+        if (adid) {
+            identifier = [adid UUIDString];
         }
         if (identifier == nil && maxAttempts > 0) {
             // Try again every 5 seconds
@@ -181,7 +181,7 @@ - (NSString*)generateUUID
     return result;
 }
 
-+ (NSString *)getPlatformString
++ (NSString*)getPlatformString
 {
     size_t size;
     sysctlbyname("hw.machine", NULL, &size, NULL, 0);
@@ -192,7 +192,7 @@ + (NSString *)getPlatformString
     return platform;
 }
 
-+ (NSString *)getPhoneModel{
++ (NSString*)getPhoneModel{
     NSString *platform = [self getPlatformString];
     if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 1";
     if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";