39

You cannot (barring any hardware tweaks.) If you root your phone and install a custom ROM, you may be able to remove the "Turn off" and "Reboot" options from the Power menu. However, Nexus 5 (as do most modern phones) has a hard-wired feature, where holding the power button for 10 seconds shuts the phone off. This is done so that you can restart the phone ...


18

Try pressing the power button for > 30 seconds. If it does not work, try to alternate power sources (PC/laptop USB port, and AC adapter) while repeating step #1. Still no go? You may have to remove back cover and reconnect battery. Warranty case. (source)


10

The battery charging graphic is displayed by /system/bin/playlpm file on Samsung devices. If you are root, you can edit this file to: #!/system/bin/sh /system/bin/reboot And be sure to add those permissions to the file: chmod 0755 /system/bin/playlpm chown root.shell /system/bin/playlpm Your device will now boot when plugged


9

That is expected behavior. It allows you to turn the phone off if you need to ensure the battery doesn't drain (or whatever other use-case you can think up) and still have a usable alarm clock. It's not new, many Android devices do something similar, and every iPhone since the first-generation models also had that feature. I can also recall an old Nokia 3310 ...


7

When your phone is not turned on it can't have a adb service running (Disregarding the possible technical difficulties it would also be a security issue.) Try the following instead: 1. Take out your battery and connect the phone to a charger 2. Your phone should now turn on. 3. Insert your battery. It worked on my current and on my previous phones (ZTE ...


7

There was a question here asking if it is an expected behavior, it has two answers saying not much more as simple yes. I am going to answer this question as a question of why is it so, whether Android is running, and how it works if not. The answer is: no, Android is not running nowhere, nor is Linux underneath him. Wake up on alarm is a hardware feature ...


5

There are some apps who have this feature, Like switch off, reboot and etc. One of them is Notification Toggler , This app isnt particularly for switch off and reboot stuff, but you can do that also. :) EDIT:: I think you have to root your device to use reboot and shutdown , You can't do it without Root unless applications are signed with the System ...


5

The "power" button on Android tablets does not behave like that on a computer. It is really a control for whether the display is on or off, not the tablet, which is generally always on. You may be able to get what you want by setting the "Stay awake while power is connected" setting under developer options, and setting the screen timeout to a short ...


4

So, there are many ways to do so. The most proper one, as always supported by Google (and more and more by others, e.g. nvidia from nougat) is this fastboot command fastboot oem off-mode-charge 0 Otherwise, you can either hijack the charging binary (not guaranteed to be possible on all devices, but just requires root) or patch your ramdisk (theoretically ...


4

Final Answer (to wrap up the question) [short version]: Battery was utterly dead, when popped open and measured at the tabs, voltage was under the safe minimum. New battery ordered from eBay plugged in, tablet worked! Just had to to escape from a boot cycle of doom, root and install Cyanogenmod 9 alpha (of which there are numerous available tutorials for ...


4

Following solution worked for me: Take your battery out (needs to be a charged battery). Press and hold the "Home" + "Volume Down" button. While holding them down plug in the battery. This should get you into Recovery mode. Press "Volume Down" button to cancel Recovery and it should reboot your phone. NOTE: If you have a USB charger connected it may ...


4

I also recently upgraded my Note2 from 4.1 to 4.3 and was having the same problem. I installed the Wakelock Detector by UzumApps and found that the Noom Walk pedometer app was waking the screen. I uninstalled the Noom Walk app and the screen no longer wakes. The Noom developers have posted a test APK which can be found here: http://noom.uservoice.com/forums/...


4

Install Tasker to be able to: Power off tablet when car is off Use command fastboot oem off-mode-charge 0 To reset to normal, change the 0 to 1 Event for Tasker profile : Power


3

I'm assuming you have a power cable plugged in. In that case you'll have to unplug the cable, turn it on and plug it in as soon as something appears on the screen. I've had this problem several times when trying to flash the phone while tethered to a computer and forgot to take out the USB cable when rebooting.


3

It's none of the two. Turning of the screen of an Android device will not hibernate it (thinking of a phone: What about incoming calls if the device would be hibernated?). Android handles things a little different. In the best case, with the screen switched off Android enters a very energy-saving mode called "deep sleep". It will cycle down the CPU to a ...


3

Check out the free StayAwake app Simple app to toggle a stay awake mode. enables stay awake, always if plugged in to AC/USB


3

No, this isn't possible. Some CM versions allow you to use the trackball to turn the screen on, but there's no way to turn the device on from cold this way. When the device is off, Android isn't running, so nothing in Android can listen for a button press. The handling of the power button is much lower-level in the device firmware, and isn't available for ...


3

The problem with understanding any physical buttons on an Android, is that they are extremely hardware dependent. Usually they're connected to some GPIO port on either the application processor (AP) or cellular processor (CP/modem), and on some devices (MTK,Qualcomm) these are combined in a SoC. In other devices, there is a separate touch screen MCU, that ...


3

I have the same problem once a week and have a little different solution (workaround): Unplug the phone from the charger Press and hold the volume down button plus power button for 15 seconds Plug it into the wall-charger (while still holding both buttons!) -> the red light should start to blink. After 4-5 blinks release the buttons Wait some seconds and ...


3

Yes. Even stock ROMs have a feature named Scheduled Power-On. Phones have a built-in battery to allow RTC (real time clock) to run while the device is powered off, and it's the base that scheduled power-on is designed. Here's Settings -> Advanced -> Scheduled Power On/Off on my phone (OnePlus 5, Stock 7.1.1) (click image to enlarge)


3

Depending on the device that you are using, this setting can easily be configured, in fact it comes natively on some devices like Xiaomi (MIUI), LG, Oneplus or Lenovo. For example on my device running MIUI 9, I can easily configure the timer like so: Open the Security App → Battery → Settings (Gear icon on top right corner) → Schedule power on or off: ...


3

This hasn't been a stock Android feature. Some sources including this Missing "Scheduled Power On/Off" option in Android 5.0.2 on Swipe Elite Plus phone talk of it being on Lollipop but I jumped that version so can't comment For sure, it's not a stock feature from 6.0 to 8.1. You can use some automation app to schedule power off not power on


3

Disabling the power button and changing the volume_up button to power did end up working (i.e., prevents faulty restarts at random times.) I also verified that long pressing the actual power button does end up restarting the device, which means that restart is somehow programmed at the hardware level.


2

For some older Samsung devices, this can be accomplished through NoMoarPowah!: NoMoarPowah! can automatically reboot into Android when charging is done. Either when fully charged, or when the battery level reaches 15% and Android has enough juice to run. You need root and you probably don't want to do it unless you really know what you're doing, since I ...


2

Just got this working for ZTE Force (Boost Force, Sprint Force, etc). I used IET_DEMO's answer, but replaced the file located at /system/bin/battery_charging with this code: #!/system/bin/sh /system/bin/reboot


2

If it's a hardware defect, I would suggest sending it to a service center for repair. You could plug it to a portable power bank so it lasts longer. But before you do that, you might want to back up your data to your PC or somewhere else first.


2

Problems after dropping the phones typically come from two reasons: Physical damage Brown out (unclean voltage drop) The voltage drop may temporarily lock up the circuit, so you could take out the battery for some time to let it properly reset. Else inspect the connector springs if they're bent and measure the battery voltage, try a spare battery, etc.


2

I had luck holding the power and volume down button for 10 seconds, then plugging in the usb charger. I was presented with the technical boot screen which gave me a few options (start, recovery mode, etc) - I just selected start and it began to power on as normal. Now charging with the white icon from 0% charge.


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