Sorry week for Samsung

Power, if not wielded properly, can blow up in your face.Just ask Samsung, which this week saw further proof that its exploding battery problem cost it top spot in the global smartphone market, and the arrest of heir apparent Lee Jae-yong for his alleged involvement in currying political favours in return for charitable donations.Lee is accused of making 41 billion won (€33.51 million) worth of donations to non-profit foundations owned by Choi Soon-sil, a friend of South Korea's president