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[User Guide] SOS

Posted: Fri Sep 21, 2018 10:21 am
by MCADevelopment
The design concept of SOS function is keep sending message with minimum power consumption.
This is how it works:

--->(Sleeping)--->Wake and send massage--->(Sleeping)--->Wake and send massage--->(Sleeping)---> [Repeat]

The SOS function is working well with Doze since Android 6.0 and ensures the message is sent out periodically,

To minimum the power consumption, please follow the steps:
1. Turn off Wi-Fi scanning and Bluetooth scanning (Android 6.0 or above)
Android uses Wi-Fi and Bluetooth to find out the position of the device even when they are not turned on.
Android will turn on Wi-Fi and Bluetooth, search information for positioning, then turn off them without any notification.
Needless to say, this consumes power.

To disable them, do following steps:
A. Find "Location" in device's settings, enter it.
"Location" may be a different name and put under another setting between brands.
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B. Find "Scanning" or "Scan settings" option in 3 dots icon, and enter it. Some brands may put it in another option.
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C. Disable Wi-Fi scanning and Bluetooth scanning.
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2. Enable Airplane mode
In critical situation, if you have mobile phone signal, make a call for rescue. Otherwise, disable it.
When mobile phone signal is weak or absent, phone uses lots of power to enhance or search signal.
In Airplane mode, mobile phone and Wi-Fi signals are cut-off.

3. Enable "Power saver" mode
Many phones have this mode. It may also be called to different names between brands.
For our testing devices, HTC, Samsung, ASUS, etc, SOS is working well with their "Power saver" modes.

4. Start running SOS
Open MCA, enter SOS page. Setting SOS and start it.

5. Keep SOS page on top, and turn down the screen by pressing the power button
The screen is another power-eating monster.