Updated: 27- August -2015
The time when we wrote the post, the only option to check Gmail was on your Desktop and mobile phone browsers but now a days you can you check Gmail on your respective mobile apps.
To Sign into Gmail Mobile App you should point your browser to gmail.com on your mobile browser and you will open the Gmail on your mobile browser. It loads pretty quickly even if you are on a slow internet connection.
Having trouble finding the Gmail Sign in Page? Have you tried mail.google.com to access the Gmail Sign in page?
Generally the URL gmail.com is enough to access the Gmail Sign in page, however when this doesn’t work, the URL mail.google.com (or gmail.google.com) is your best bet. 99.99% of the time this will work.
For the remaining 0.01 %, you can click on this link or use Gmail Manager Firefox Plugin which opens your Gmail account without ever visiting the Gmail Sign In page.
In case you don’t have a Gmail Account and are looking for the Gmail Sign Up Page, here is the link.