 The FL consists of two stages: in the first stage, customers train the initial model using the phone and the edge computing server collaboratively. The mobile edge computing server's high computation power can assist customers' training locally.
<clarity>  The FL consists of two stages: in the first stage, customers train the initial model using the phone and the edge computing server collaboratively. The mobile edge computing server's high computation power can assist customers' training locally.
 The FL consists of two stages: in the first stage, customers train the initial model using the phone and the mobile edge computing server's high computation power can assist customers' training locally.