For Romanians living near the border with Ukraine, noisy phone alerts warning of “falling objects from the surrounding airspace” and other possible dangers had become so frequent and seemingly needless that many often set their phones to silent mode before going to bed. Andra Lupsa, 38, had done so on Thursday night, but she was still woken up: Her husband’s phone, left on, started screaming shortly after 1 a.m. “I said to myself: ‘just another alert,’” she recalled.