Your mobile device must meet some basic requirements to use Google Reader Mobile.The browser must support XHTML. You can test this by going to www.google.com/xhtml in your mobile device’s browser and performing a search. Almost all new cell phones are XHTML compliant, so if you have a recent model, you shouldn’t have any problems. If you have accessed websites from your mobile device before, then you likely won’t have a problem.
Enable cookies on your mobile device browser. Some mobile service providers do not allow cookies on their network, so you may need to call and ask.
Check with your mobile service provider to make sure they allow secure SSL traffic.