[Android Central Question]

After new upgrade in November, my HTC u ultra plays a notification sound to alert me to nothing! Sometimes it replays itself over and over sounds like this (do-lloo do-do-lloo do-lllo). This phone is broken, cracked the screen went back 3 times then I insisted I got a new one, the new one does the same! What is it and how do I switch it off? Thanks

[B. Diddy]

Welcome to Android Central! That sounds like the NFC notification. Turn of NFC and see if it goes away. Or if you habitually carry credit cards right next to the phone (like in a wallet-style case), take the cards out -- one of them probably has an NFC chip that's triggering that tone.