Most of Motorola's phone returns are actually from people confusing poorly running apps with the phone quality itself, chief executive Sanjay Jha explained in a presentation at a Bank of America Merrill Lynch conference on Thursday. Of those returns that were tracked, 70 percent had been turned in because they used too much battery power or bogged the phone down. Google's loose testing on Android Market didn't check for this, leaving Motorola to both monitor for it and deal with the returns.