I updated my Xperia zr to android 4.4.4 two days back... Following issues have come up since 1. Data and WiFi stop working when Bluetooth is on 2. Excessive battery drain - android system using upto 50% battery n phone keeps awake 3. Phone heating up 4. Phone has become very slow n Laggy As it is the mic stopped working after the previous update and now this... My phone's become completely useless! So very disheartening... Have always used Sony phones and this really shakes my confidence in the phones!
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