Facebook's main site login is not working for some mobile services, including the iPhone and iPad app, as well as the mobile web. This is causing problems for users who are trying to access their account on these devices. Facebook is aware of the issue and is working on a fix.
The Facebook main site login is not mobile services. This means that you cannot login to your Facebook account using a mobile device. You must use a computer to login to your Facebook account.
Facebook is one of the most popular social networking platforms with over 2 billion active users. However, Facebook's main site is not optimized for mobile devices and this can be a major inconvenience for users who are trying to login from their mobile devices. Facebook has been working on optimizing its mobile site and apps, but there is still room for improvement.