Ok, this is my story. I bought a Mi2S 16GB from *******. Everything went as hoped, and in 5 working days I got the phone, together with 2 backcovers and a screen protector. I immediately tried to turn on the phone: no way. Ok, the battery needs some charge, I said. Using original cable and charger I put the phone on charge. I immediately noted the led blinking RED, but I thought it was normal. ... After 4 hours (more or less) the led was still blinking (red). And again the phone didn't want to wake up. Then I tried different cables/chargers (HTC, Motorola, Samsung): no way. The only way to see the phone responding is to remove the battery and connect the phone to a PC. Then I can go to recovery mode (but I can't copy any file into the phone since the PC don't see it) or to fastboot mode (and I also tried to use miflash to flash a stock rom, but the problem is that the phone, unlike HTC, for example, doesn't boot up if the battery is off). In a few words, I think the battery is pretty dead. According to my tester it has 3.47V. Is it good or bad? What the hell means the led alwyas blinking red? I got in contact with ******* customer support, but they seem to be not willing to replace my battery. Any ideas? Suggestions (pls avoid sarcasm)? Do I need to buy another battery?