Can’t Log In to my WordPress Site with mobile browser

I’ve been wanting to write new posts with my cell phone (env Touch) via the mobile browser, but I can’t even get logged in to the admin panel.

I’m able to access the login page, and I made sure that I am entering my username and password correctly. But after I click “Log In”, it just redirects me back to the login page, like nothing happened.

I’ve tried installing several different WordPress mobile admin plugins, and none of them have made a difference. I know that you are able to post to your blog by using email, but as far as I know, you can’t include images if you do it that way, and I need to include an image in all of my posts.

If anyone knows how to fix this, or know an alternate way, please help.