If you're using Blackberry, Windows Mobile, Symbian or Android Google Maps version 5.3 and below, you won't be able to save (star), rate, or review places in Google Maps.
- Save places: You can’t save your favorite places and access them later.
- Rate and review: You’re unable to rate places or write a review for them.
Google Maps uses Secure Sockets Layer (SSL) to encrypt information such as search activities and login information. Since SSL is not supported on Blackberry, Windows Mobile, Symbian, and Google Maps Android version 5.3 and below, features that require you to be signed in are not available.