I don't know.....I don't own a atrix 2 my brother does and he does not use the cell service on it so I don't know.....and also if you overwrite a ROM you may have to destroy the system you want to put it on...in my experience just formating leads to system uid errors and crashes
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Current Device: Samsung Galaxy SIII (SGH-I747)
ROM: Stock Touchwiz Rom
Kernel: Stock 3.0.31-2024954
Previous Devices: Motorola Droid 1, Pantech Crossover, Motorola Droid X, LG Revolution, Sony Ericsson Xperia Play (r800x)