#KEEP IT A STACK HOW TO#
#KEEP IT A STACK PLUS#

Guess it could even prepare coffee, if our devices had sensors to detect coffee and water. As I was not in the mood to check all possible combinations, I rather decided for the allmighty 6-letter-solution: T-A-S-K-E-R.ДЄs most of you probably know, Tasker is the automation solution on Android. It would probably gain best results to join the two approaches. Not being a heavy data user (as the LBE stats in the same screenshot show), I could however not really tell how much help that brought: Compared to the two Airplane-Mode handling apps above, results in terms of gained battery duration were minimal (if any). In the status bar I saw several times that it had AutoSync disabled 7, so it seems to work. Though, with a bad signal data transfer uses more power than with a good signal, as e.g. It does, however, never activate (or deactivate) Airplane Mode, so the power used to get a (better) signal will still be the same. Dropping below a certain signal strength the user can define, it disables AutoSync, and below a second definable level switches off mobile internet altogether. I've also tested ShutUpBatterySaver 6, which aims to handle the data traffic.

#KEEP IT A STACK PLUS#

Another plus of Autopilot is the log provided to the user: This way you can see the exact times of mode switches. However, as the results of both apps where absolutely comparable, those extra options seem not really necessary, while being nice to have. Aside from that, it gives more options to be configured by the user. With Autopilot, the only annoying side-effect was: For each signal check, it flashed on the display for about a second. And with the cell radio turned off, it also didn't use additional power (more precisely, it didn't use any power for this radio then) - which was exactly what was intended. In the second graph of my question, this shows up as 'gaps' in the Phone Signal bar: As the cell radio was disabled during Airplane Mode, no colors are shown the system didn't know anything about signal strength in this time frame. After that timeout, Airplane Mode gets disabled, and cell monitoring takes over. The user can define how long that would be. Both monitor the cell signal and, when it drops to far, switch to Airplane Mode for a predefined time. I've reached fairly good results with two apps: Autopilot 4 and NoBars Battery Saver 5.

#KEEP IT A STACK HOW TO#

So I played around a bit with different solutions - and here's what I've found out: How to automatically deal with those dead zones to save energy? Apps to automatize Airplane Mode However, my answer on how to automatically deal with those dead zones was not that detailed. It also offers you a 'compass' giving the direction to the strongest signal. OpenSignalMaps has the plus of showing you all cell towers in reach, pointing out which you are connected to. I already showed in my answer on Does 'poor' reception deplete the battery quicker? how one can find out about those 'Dead Zones' and where they are:ДЄpps like No Signal Alert 2 and OpenSignalMaps 3 monitor the cell signal in background, and record those areas, so they can show you a map of where the dead zones were. How to find out where the dead spots are?

And phone will power-up like crazy to find a new cell tower. See the little red spots: 'no reception'. This uses more energy: compare it with the graph on top of it (not in the screenshot - but the same as in the first screenshot), and you see the bar is almost flat where the cell signal is good - but falls faster where it's not. 'The greener the cleaner': A bright green means 'good reception' (the screenshot shows this at the begin and end, that is here: morning and evening - so at home I have good reception). The following screenshot 1 clearly shows those times, when you take a look at the bar titled Phone signal. So that's what's really behind it: On poor reception, the device spends a lot of power to find a better/stronger signal (or any signal at all if lost). If the reception is bad sending signal strength has to be adjusted accordingly. This also reduces the SAR value which is a measurement for exposure of the human body to radiation. The transceiver circuit is engineered with power saving in mind and will reduce sending power as much as possible if the reception is good. Some backgrounds as explained by ce4 on the question Does 'poor' reception deplete the battery quicker?:

Keep it a stack