And what was wrong with phones going, Ring,,ring.
Why do they have to have a billion ring tones, none of which go Ring,,Ring.
If it goes Ring,,Ring, it's the phone.
If it warbles, plays music or some other tone it could be anything including the door alert (bell), microwave, washing machine, dishwasher, kids on games or a million other devices.
Even the cars sound tones when the doors open or the seat belt isn't in or the lights are on or you're going too fast.
And yes, DR Who has gone downhill since the first series.