There’s something different with how Samsung tests its batteries: unlike other smartphone manufacturers, the South Korean company runs tests in an in-house lab, reports the Wall Street Journal.
Samsung’s lab is one of the 28 labs certified by the CTIA, a U.S. wireless industry’s trade group, but the company is the only one to be using a lab they own. Apple and Motorola, for example, use third-party labs for CTIA certification.