Blackberry this week dropped the price of its Android-based PRIV by $50 in an attempt to boost sales in the wake of weaker than expected fourth quarter results.

The device, which previously retailed for $699, is now listed at $649 on the company’s website. Blackberry has also slashed the price of PRIV accessories by 30 percent.

However, the device deal will come as a boon for AT&T and T-Mobile customers only, as a disclaimer warns the smartphone as sold through Blackberry doesn’t work on Verizon, Sprint or U.S. Cellular’s networks.

The PRIV is currently available through Verizon’s website for a retail price of $720. It is not listed on the websites of Sprint and U.S. Cellular.

The move comes on the heels of Blackberry’s fourth quarter earnings report, which revealed a larger-than-expected drop in revenue.

Revenue dropped to just $464 million in the quarter, down from $660 million the year before and $548 million the previous quarter.

Blackberry CEO John Chen said device volume for the period was “below expectations” thanks in part to a delay in PRIV contract negotiations with Verizon and other carriers. Though the PRIV launched with Verizon in March, the hold up pushed the benefits of that launch out of the quarter, Chen said.

So far, Chen said the PRIV has been launched in 34 countries, with deployments in 6 more countries through 14 additional carriers in the works.

An Android Marshmallow update for the PRIV will be released in late April or early May, Chen said.