判断手机号码格式的正则表达式

<pre name="code" class="objc">//验证手机号码
+ (BOOL)isMobileNumber:(NSString *)mobileNum
{
    NSString * MU = @"1[0-9]{10}";
    NSPredicate *regextestMU = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MU];
    if ([regextestMU evaluateWithObject:mobileNum] == YES) {
        return YES;
    }else
    {
        return NO;
    }
}

- (BOOL)isMobileNumber:(NSString *)mobileNum{       /**        * 手机号码        * 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188        * 联通：130,131,132,152,155,156,185,186        * 电信：133,1349,153,180,189        */       NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";       /**        10         * 中国移动：China Mobile        11         * 134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188        12         */       NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";       /**        15         * 中国联通：China Unicom        16         * 130,131,132,152,155,156,185,186        17         */       NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";       /**        20         * 中国电信：China Telecom        21         * 133,1349,153,180,189        22         */       NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";       /**        25         * 大陆地区固话及小灵通        26         * 区号：010,020,021,022,023,024,025,027,028,029        27         * 号码：七位或八位        28         */      // NSString * PHS = @"^0(10|2[0-5789]|\\d{3})\\d{7,8}$";          NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];     NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];     NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];     NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];         if (([regextestmobile evaluateWithObject:mobileNum] == YES)    || ([regextestcm evaluateWithObject:mobileNum] == YES)    || ([regextestct evaluateWithObject:mobileNum] == YES)    || ([regextestcu evaluateWithObject:mobileNum] == YES))    {        return YES;    }    else    {        return NO;    }}