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Compared to the previous ICS alpha, a number of additions have come to the ICS beta including an updated UI, a shortcut from the lockscreen to the camera and being able to use the music control icons on the lockscreen without unlocking. The Face Unlock feature will also come to the final ICS upgrade for those devices that have a front-facing camera. As well as this the GSM modem and FM radio have now been turned on, there’s simplified email management and quick-dial has also been added.
If you install this beta Android 4.0 Ice Cream Sandwich update, you will lose Wi-Fi, Bluetooth and Google Apps as well as the ability to upgrade to the official update later. The Ice Cream Sandwich beta ROM is recommended for advanced developers to install due to the complexity required to do so, and the instability of the software.