The app uses the accelerometer sensor of the phone to recognize if the phone is horizontal or vertical. The Pro (paid) version also recognizes if the phone is horizontal with the screen up or the screen down.
This ring volume control application is similar in function to PocketMode for iPhone and the Pocket Mode option of the latest HTC phones. But it uses the accelerometer sensor instead of the proximity sensor (which PocketMode uses).
You can set the Pro version so when ring volume is changed (via volume rocker buttons), it pops up and allows you to adjust the ring volume for each phone position. Or you can lock the ring volume and not allow the volume rocker buttons change it by accident. Please note that some third party applications may also change the ring volume (some camera applications tend to control the shutter volume when taking pictures), hence the triggering the Smart Ring Control application popup window.
Additionally, you can set the phone to be muted for a period of time from within the application. For example, when you go to a movie, you can set the phone to be muted for 2 hours, and it will enter silent mode for 2 hours. Right after you finish watching the movie, the phone ring volume will be automatically restored to the previous settings. Or you can go to sleep and turn off the ringer until the morning when you wake up.
Below are screenshots of the application windows, and description of each of the control options it offers.
The Basic tab
1. Slider to set the volume when the phone is horizontal with the screen up.*
2. Slider to set the volume when the phone is horizontal with the screen down.*
3. Slider to set the volume when the phone is vertical.
* - The free version has one slider only - for when the phone is horizontal, regardless of screen up or down.
4. This button mutes the phone for the time specified next to the button.
5. This clock specifies for how long the phone will be muted.
6. This button mutes the phone permanently, until you un-mute the phone.
7. This slider sets the time the phone will be muted. By dragging it left or right you increase or decrease the time the phone will be muted. The free version can mute the phone for up to 8 hours, while the Pro version can mute the phone for up to 12 hours.
8. The "-" and "+" buttons are used for fine tuning of the time the phone will be muted.
The Advanced tab
2. Vibrate when phone is horizontal with the screen-up.*
3. Vibrate when phone is horizontal with the screen-down.*
4. Vibrate when phone is vertical.
5. Vibrate when muted. Please note that this checkbox is for only when muting the phone via this app! If you mute the phone via the volume rocker or power buttons, it will vibrate or not depending on your preference in the sound settings section (system settings>sound).
6. Show or hide the timed mute controls on the home screen.
7. Keep selected to have the the app automatically start on phone boot. This way you won't have to start the application manually when restarting your phone.
8. This drop down defines how to treat the volume rocker buttons clicks. For example, you can lock them so you won't accidentally change the ring volume when handling your phone. Or you can set the volume rocker buttons to adjust the horizontal ring volume. This way you can always use the volume rocker buttons to adjust the ring volume when your phone is on your desk and it'll still ring loud enough when in your pocket so you can hear it.
* - The free version has one option only - for when the phone is horizontal, regardless of screen up or down.
Below options are available in the Pro (paid) version only:
9. Detect Phone Position - this defines when the phone position should be detected. Options are on incoming call/message, or on every 5 seconds or 1/5/15 minutes. Checking the position on regular intervals may help with some phones that cannot determine the position instantly. They usually change the ring volume after the phone started ringing, which is annoying. By setting to check the position on regular intervals, you will ensure that when the phone starts ringing, there are no surprises.
10. Quiet ring on pickup - as the name suggests, this option lowers the ring volume once the phone is picked up from a table or desk. Or in other words, when the phone starts ringing, it monitors if the orientation is changed from horizontal to vertical and if there is such change - lowers the ring volume.
11. Use this option to detect when the phone is in your bag or pocket and force the phone to ring using the vertical ring volume level. Sometimes the phone is horizontal when in your bag, so you may not hear it. Use this option to make it ring louder even if it's horizontal in your bag. This option overrides option #14, as they are contradictory. This option also means that your phone will always detect proximity when your phone is with the screen down. So do not use this option if you want to have different ring volume for when the phone is with the screen down.
12. Select this option if you want the SMS notifications volume to behave like the ring volume. I.e. - to change the SMS notifications volume depending on the phone position.
13. Run the service in the foreground. This will ensure the service is not killed by Android. This is available for Android version 2.0 and above. If a service is not running in foreground mode, Anbdroid may kill it if other applications consume too much of the phone memory. By running the Smart Ring Control service in foreground, you ensure your phone will always control its volume based on its position. Additionally, if the application is not running in foreground, Android would suspend it more when the phone is on standby, and as result there will be slight delay from the moment the phone starts ringing, till the moment the volume is adjusted. The application may even not function properly on some phones if it's not running in foreground. So whenever you have problems - try running the application in foreground. There is a slight drawback for this however - you will always see the Smart Ring Control icon in your notification bar. Some may not like this, and if they are sure their phone is never low on memory, they can use this option to disable the foreground mode.
14. Set volume to lowest when the phone is unlocked. Some may find it useless to ring loud the phone when its unlocked. If the phone is unlocked it usually means that you hold it in your hands and can hear it pretty well.
15. Lower volume immediately when set horizontal while ringing. This option allows you to lower the ring volume by setting your phone horizontal within 5 seconds since it started ringing. For example you are holding the phone in your hand, and it starts ringing unexpectedly. You can lower the volume immediately by positioning the phone horizontal.
16. Lock application orientation to portrait mode.
17. Open this application with volume rocker buttons. Be aware that some applications change the phone volume (like camera applications turning off the phone sound so the shutter sound is not heard). These applications will trigger the Smart Ring Control application, and bring it into focus. This is because the only way Smart Ring Control can determine if the volume rocker buttons are pressed is by monitoring the volume changes. Unfortunately, Android does not provide a way for developers to determine if the volume rocker buttons are pressed.
WARNING: You should disable any setting/application that changes the ring volume. For example some phones have an option/application that gradually increases the ringer volume. If this option is not turned off, you'll experience for example high ring volume, then lowered by the option, and then gradually increasing the ringer volume.