Motorola Mobility had a bittersweet second quarter as an independent company with improving results but a sign that Android tablets weren't faring as well. It improved its losses and only shed $56 million versus $81 million in the winter. Its phone shipments were also bouncing back, with 11 million cellphones trading hands and 4.4 million of those being Android smartphones. Both phone numbers were improvements from the winter and from a year ago.
