hey guys i bought a xperia SP and i cannot turn the phone to silent. I use the stock app that comes with the phone but still on silent mode i get notification sounds for whatsapp,texts,emails and calls etc. I have to bring the volume down manually from the volume control button. So when i want to put the phone to the loud mode, i have to again manually increase the volume. The silent mode stock app has no effect, tried downloading the silent mode widget -no effect. Tried putting it to silent from the notification bar nothing too.
Hope someone can help me out please. I have looked at Xperia Z thread and some people have the same issue but i could find what happened and how they resolved their issue.
Thanks !
I have the need to keep my phone in silent mode during certain times of the day, example when i go to bed, before meeting, before watching movie, etc. I didnt use any app but manually turn up and down the call alert volume. It isn't really difficult or troublesome for a long term mode changer like me.

The talktime volume or mp3 player volume won't be affect when i am in silent mode.
As for notification sounds from whatsapp, you need to check the app setting to turn off notification sounds. I don't think i get any sms notification sounds when i am in silent mode and i did not do anything to adjust this.
Btw, when silent mode is turned on, all audible signals are turned off. No need to enter each app to turn their notification sounds off.