I'm having trouble logging in from my mobile phone.

m.facebook.com (Facebook Mobile site)

If you're having trouble logging into Facebook from your mobile browser, this is probably a cache and cookies issue. To fix it:

1. Clear your mobile phone’s cache and cookies. Each phone is different, but you can usually clear cache and cookies from an option or settings menu when your mobile browser is open. You can consult your phone's user guide for more help.
2. Enter m.facebook.com as a new URL, rather than using a bookmark or a link. Log out of Facebook if you have the option.
3. Enter your normal login details to log in. Please note that passwords are case sensitive.

Note: You may want to repeat steps 1 through 3 a few times. 


Facebook iPhone App

First, make sure you have the most up-to-date version of the Facebook for iPhone app. Go to the App Store on your iPhone, and check the Updates section. If there's a newer version of the Facebook app you don't have yet, it'll be listed there for you to download. 

If you continue to have trouble with the app, check the Facebook for iPhone Page for the most recent updates on known issues and new builds. If your problem isn't listed, please submit a report. 


Facebook Android App

First, make sure you have the most up-to-date version of the Facebook for Android app. Go to Market > My Apps > Update. If there's a newer version of the Facebook app you don't have yet, it'll be listed there for you to download. 

If you continue to have trouble with the app, check the Facebook for Android Page for the most recent updates on known issues and new builds. If your problem isn't listed, please submit a report.