- (BOOL)validateMobile:(NSString *)mobileNum

{

    NSString *regex = @"^1[3|5|7|8][0-9]\\d{8}$";

    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];

    if(![pred evaluateWithObject:mobileNum])

    {

        return NO;

    }

    else

    {

        return YES;

    }

}