As initially marketed by Verizon, when first launched, the Droid 4 was not capable of roaming in countries with non-CDMA wireless networks.

While in Webtop mode, the phone, operating with a similar UI to one would find on a typical Linux desktop, could run several applications on external display such as Firefox web browser, SNS clients and 'mobile view' application enabling total access of Droid 4 and its screen.

[7] With the release of Android 4.0 Ice Cream Sandwich for the Droid 4, the Webtop application was replaced with ICS's tablet mode.

[9] As of August 2023, an ongoing effort by the Maemo Leste project to port mainline Linux to the Droid 4 supports most of the device's functionality, including voice phone calls and SMS,[10] except for the cameras.

[11] The Maemo Leste project, funded through NLnet [12] and the European Commission's Next Generation Internet program,[13][14] aims to develop "An independent mobile operating system focused on trustworthiness.