Credit: Robert Triggs / Android AuthoritySony has shared more details about what was causing the Xperia 1 VII to shut down, restart, or fail to power on.Some Xperia 1 VII units experienced motherboard defects due to exposure to temperature and humidity.Sony has now resumed sales of its latest smartphone in the European and Japanese markets.Sony launched its latest flagship smartphone, the Xperia 1 VII, back in May. Unfortunately, the initial feedback on the smartphone was not what Sony had expected. Many buyers complained about their Xperia 1 VII rebooting, shutting down, or not starting at all, leading Sony to pause sales of its latest flagship smartphone and begin investigating the issue. A few days later, the company announced that the issue stemmed from a fault in the smartphone’s motherboard, but stopped short of sharing more details.Sony has now shared more details on what exactly went wrong with the Xperia 1 VII. The company says that the circuit board was damaged during the manufacturing process due to the influence of temperature and humidity.