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Das inoffizielle Android-SystemhandbuchDas inoffizielle Android-Systemhandbuch
Buy at Amazon for €6.99
Samsung Galaxy S10 Lite, Prism WhiteSamsung Galaxy S10 Lite, Prism White
Buy at Amazon for €475.85
RED WOLF Car Reversing Camera WiFi Magnetic Wireless Back Up Car Camera Rear / Front View IP68 Waterproof Night Vision Battery App Android iOS for Truck Trailer Truck Motorcycles TrailerRED WOLF Car Reversing Camera WiFi Magnetic Wireless Back Up Car Camera Rear / Front View IP68 Waterproof Night Vision Battery App Android iOS for Truck Trailer Truck Motorcycles Trailer
Buy at Amazon for €125.99
CUBOT P40 Smartphone without Contract, 128G Mobile Phone, 4GB RAM, Dual SIM, Android 10, 6.2 Inch Water Drop Screen, Four Cameras, 256 GB Expandable, 4200 mAh Battery, 4G Global Band, German VersionCUBOT P40 Smartphone without Contract, 128G Mobile Phone, 4GB RAM, Dual SIM, Android 10, 6.2 Inch Water Drop Screen, Four Cameras, 256 GB Expandable, 4200 mAh Battery, 4G Global Band, German Version
Buy at Amazon for €110.49
Nebula Capsule Projector by Anker, Smart Portable Projector with Wi-Fi Pico, 100 ANSI Lumen, DLP, 360 Degree Speaker, 2.5 Metre Screen for Android 7.1 4 Hours Battery Life with AppNebula Capsule Projector by Anker, Smart Portable Projector with Wi-Fi Pico, 100 ANSI Lumen, DLP, 360 Degree Speaker, 2.5 Metre Screen for Android 7.1 4 Hours Battery Life with App
Buy at Amazon for €349.99
OUKITEL WP7 Outdoor Mobile Phone Without Contract, 6.53 Inch FHD+ Helio P90 6GB 128GB Rubust Smartphone, 48MP Rear Three Cameras + 8MP IR Night Vision Camera, 8000mAh Battery Android 10.0 Outdoor Smartphones NFC, BlackOUKITEL WP7 Outdoor Mobile Phone Without Contract, 6.53 Inch FHD+ Helio P90 6GB 128GB Rubust Smartphone, 48MP Rear Three Cameras + 8MP IR Night Vision Camera, 8000mAh Battery Android 10.0 Outdoor Smartphones NFC, Black
Buy at Amazon for €349.99
Cubot X30-6 and X30-8 DE Smartphone, 4G, without ContractCubot X30-6 and X30-8 DE Smartphone, 4G, without Contract
Buy at Amazon for €169.99
As of 2021-01-16 13:33
prices & availability might be subject to change.
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Battery Helpers

Battery Calibration

2021-01-10

Probably one of the most persistent Battery Myths: the battery needs to be calibrated every now and then! Rather nonsense (see linked article). You don't need an app to calibrate your device's battery. That rather happens as a side-effect: that is, always when your battery ran low until the evening, and you fully charged it in one uninterrupted run (over night) – so those apps are mostly „snake oil“ to obtain ad revenue (see: What’s it all about those modules apps contain?). But for those who insist, there are some calibration apps available – which all require root (mostly to remove the batterystats.bin which holds the "juice consumed by app" data):

Identify Battery Consumers

2021-01-10

Though Android comes with a built-in tool to show battery usage and consumers, this is often mis-interpreted and not even complete. It gives you raw indicators, true – and if there's an app nibbling at your battery all day long permanently with „greater hunger“, it will certainly show up here. For a deeper analysis, however, one often needs tools revealing more details:

Other Battery Helpers

2021-01-10

Further Readings:

2021-01-11