关于手机号码的验证（移动，联通，电信）

描述：在类里添加此方法，用的时候直接调用即可。

//检测手机号码
- (BOOL)isMobileNumber:(NSString *)mobileNum
{
    
    NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
    //移动
    NSString * CM = @"^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$";
    //联通
    NSString * CU = @"^1(3[0-2]|5[256]|8[56])\\d{8}$";
   //电信
    NSString * CT = @"^1((33|53|8[09])[0-9]|349)\\d{7}$";
    
    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;
    }
}