Questions tagged [os]

An operating system (OS) manages the computer hardware in a device, such as the screen, keyboard, memory or wireless devices, performs basic control and maintenance of the running device. It also provides a software platform and services that applications can run on. Android is an OS, as are Microsoft Windows, Mac OS and Linux.

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Custom Android OS/Rom with Advanced Security Protection [Development Help Needed] [closed]

Hello Everyone So I was wondering (I've searched the internet and various websites,with no luck finding what I need) Requirements: I would like to customize and build the Android OS for my mobile ...
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Oneplus 6 crashes into bootloop since android 10

Ever since the android 10 update, my oneplus 6 has been having a very annoying issue. Every so often the phone suddenly shuts down and attempts to reboot. However, the phone does not reboot, but keeps ...
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How does Android OS do DNS name resolution?

I am learning about how Windows does name resolution and need to know how Android does it so an app will work on my Windows laptop and from my Android Phone. Borrowing from a post on superuser.com, ...
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where does the official, “non-custom firmware” Android os look for version updates?

When the "new update is available" popup appears on the screen, does the os go to the manufacturer's server or the google's servers to download the update? in other words who is the main version ...
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OS-independent app loading problem

My phone has an odd problem, and I don't know where to start in diagnosing it. Several apps started having problems opening, taking a very long time (sometimes several minutes) to open; sometimes they ...
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103 views

Does Android 8 has journaling enabled in its ext4 files sytem?

Android 8 uses stackable file sytem called sdcardfs, which emulates FAT32 on ext4 on the data partition. Does sdcardfs recognize the ext4 file system and journaling? In other words, files written ...
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i can't push file to my mobile via cmd. i get a required key not available error

after playing with rooting on my phone i have lost my os system. when i try to transfer a new one with cmd adb push i get an error. error message says could not create file: Required key not available....
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Chrome OS Update & Adobe PDF

I recently updated Chrome OS on my Chromebook. Adobe PDF is now not opening files. I'm not 100% sure if it's due to the update, but it might be. I can open PDF's within Chrome's Browser, but not the ...
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651 views

32-bit and 64-bit Android: how to tell before buying a phone [duplicate]

I have been looking into 32-bit or 64-bit Android versions for phones. It seems to me that the information on the number of bits of the installed Android version is always missing from phones' specs, ...
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Upgrade Android Version 5.0 to 9

My situation is my Phone Asus Zenfone 2 last update by ASUS was in 2016. Now few new apps are not supporting the old Android version. Now I want to upgrade my android version in my phone (Rooted/...
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Android NetHunter can't find several files

I'm trying to get KaliNethunter to work on my OnePlus5. I'm facing a problem though, and I really don't know what to say of it. There are several errors and they're all No such file or directory. ...
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Anyway to make blue light filter App include the notification swipe-down area?

From initial Googling it seems that it's an intentional issue in later Android OS versions, that blue light filters (Apps) cannot have any effect on the swipe down notification area. I was just ...
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What device to use for the Android Automotive OS Head Unit?

The Android Automotive OS was announced at Google IO 2019. Lets say I'm interested in using it for developing a PoC of an IVI for a car company. Is there any specific devices I should be using or ...
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Will Android be able to install OS updates without Google account?

I am working with android phones at work, we want to remove all google accounts from the phones before we give it to our customers. I know that the phones are not able to receive app updates, but ...
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What steps are taken by the OS when an app is uninstalled?

I recently reported bug for two apps that I use. The support guys replied that I need to delete cache and unblock notifications, set battery optimization and putting that app to sleep to turned off. ...
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Wear OS how to receive voice calls/text & turn off mobile data (Cellular GSM HSPA LTE)

I have the Huawei Watch 2 LTE and using a nano-sim for the connection. in Settings > Connectivity > Cellular, the only option available is to OFF/ON cellular, which impacts on both Voice & Data ...
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What position do cellular communcation (1G, 2G, 3G, 4G or other function only implemented in phone) play in Android operating system archtecture?

I am entirely new to Android, but have a little knowledge on Linux. I have view the architecture graph of android on official site: The Problem: Not all android device support cellar network. As a ...
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50 views

How would I go about purposely disabling all microphones on an Android phone?

I'm attempting to repurpose older Android phones, and I'm looking for a way to disable the microphones to avoid having spy-accessible microphones all over my house. Is there a way of removing or ...
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439 views

How does android dm-verity protection validate blocks with hash tree

I am learning about android dm-verity protection and I try to understand how does the android dm-verity uses the hash tree for validation of "single block". https://source.android.com/security/...
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135 views

Flash OS firmware on an OS corrupted device via TWRP

I have a big issue: I got 2 units of the Android TV device called "Stream+" sold by Channel Master, manifactured by Technicolor (https://www.channelmaster.com/Stream_OTA_DVR_p/cm-7600.htm) One is ...
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217 views

Error fastboot flash system

Hey i have phone xiaomi mi a2 try install another OS but get this error any ideas? need faster, cuz i can't run phone stuck on android one logo PS C:\add> fastboot flash system C:\add\pixel.img ...
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100 views

TWRP API to aceess TWRP from the OS?

Is there any documentation for TWRP's "API" which for instance can be used to flash an OTA update from the OS? I couldn't find any information on it, but my ROM (Lineage OS) is able to reboot my phone ...
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Upgrade the OS from 5.x to 6.x [duplicate]

How can I upgrade from 5.1.1 to 6.x in order to utilize adoptable storage?
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540 views

How can I switch keyboards using gesture navigation only(no navigation bar)? (OnePlus 5t)

I recently decided to try out gesture navigation on Android (with the navigation bar turned off), and I liked it so much I decided to do away with my navigation bar for good. Aside from English, I ...
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377 views

Android system takes too much data usage

Checking through Glasswire application, Android system has the highest data usage everyday on my Android. I only used my phone for tethering to my laptop and it don't take that much of data (My laptop ...
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What is the lowest version of Android that supports split screen apps?

I'm looking to get an Android tablet and I'd like it to support running two apps on the screen at a the same time; what is the earliest release of Android to support this?
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695 views

System update notification but system already up-to-date

I've had the Google Pixel XL for over a year now (it's awesome) and I just received a notification to upgrade my OS to 8.1.0. Problem is, I already have 8.1.0 installed. I updated it a couple weeks ...
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Lanix X110 (Mexican made, generic android 4.4.2 OS) Random “ghost” apps appear from nowhere and other issues

I have some issues with my phone and I hope someone could help me when I arrived home just found in my phone some random apps with the "system" logo in them, like in this case those were named ...
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Wiped System Partition… No OS.. How can I recover it back?

I successfully installed TWRP yesterday on my phone and then wanted to root it, but before doing that, I wanted to do a Full-Wipe of my phone, just leaving the phone with the OS, but for some reason, ...
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Does all root directory in android os exist in flashing firmware

At the root directory of android os there is some folder such as /acct /root /sys /dev , ... that are not available in firmware structure. by using fastboot to flash firmware There is some mount point ...
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104 views

Can I install the native Android OS on a non-Google phone?

Samsung makes up 90% of the Android market where I live, and getting a Nexus/Pixel is difficult and ridiculously expensive, but I really want the raw, native Android OS without any of the vendor's ...
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Is there currently a method to install Android as the main OS for Lumia 640 LTE? [duplicate]

Sorry if this has already been answered. I've scrounged for recent answers about whether it is possible to replace a Lumia 640 Microsoft phone OS with Android, but as far as I can tell it's not yet ...
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442 views

android 5.1.x security settings missing after upgrade

A friend of mine asked me for help, she currently uses a Samsung phone with android 5.1.1 and misses settings for virus security and cpu in the main settings UI. The "virus" alert should be something ...
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Install OS on Galaxy S4 w/ broken screen

I have an Samsung Galaxy S4 with a broken screen (no touch input and no visual output); it's been sitting in my closet for months, but it still charges & boots. Now, I want to put it to good use ...
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When Flashing New ROM onto Device, Can the Original Still Be Used?

I've recently rooted my phone and I was thinking about adding a custom recovery and ROM. However, my original OS still must be accessed. Is this possible?
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TeamWin “No OS Installed” Android Nexus 5

I lost my phone in Peru and had to downgrade to my old Nexus 5. It was rooted so I couldn't update the OS. In trying to unroot it, I [somehow] deleted the OS, and now the phone won't boot. I get to ...
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delete operation are extremely slow

For some reason, moving files from my Nexus 5X to my PC takes huge amounts of time. The copy "part" of the move operation is pretty much as fast as on any other Android device I've used (I can see ...
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Cannot use all cores on Honor5C (Android 6.0)

I am working on a rooted Honor5C phone in order to benchmark some computer vision algorithms. The basic idea is to see the phone as a all-in-one well optimized embedded board giving you all you might ...
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71 views

are the apps being uninstalled during OS update?

I haven't updated my Nexus 5X OS version for a long time already, due to the fact that I'm really afraid that something might go wrong with the state of some of my apps. For example, my WhatsApp ...
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How to stop power intake when completely charged?

Is it possible a process should run in the background of Android OS, and the only task of that process is to stop the power intake to the device when the battery is completely charged?
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Possible to install unbranded android on HTC ONE?

I am so sick of stone old android version HTC installed on my smartphone. While the phone is still super after several years HTC do update the Software anymore. So I d like to remove the branded ...
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Firmware update

Ok so I've been waiting for the android 7.0 update for over 3 to 4 weeks now. Should of got it last week of January but because I'm on Three they have to test it which I think is stupid because my s7 ...
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How to install android from my Computer terminal?

I have a HTC M7 without any OS on it (it goes to black screen when I boot it). It doesn't have any memory card. I am however able to have a root shell with "adb shell" when connecting it with USB. ...
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How can I determine whether or not a phone can be upgraded to Android 7.XX?

I’m looking at getting an Android phone, and I don’t want to rule out phones that come with Android 5.XX installed if they can be upgraded to 7.XX, but I don’t want to get a phone if it isn’t capable ...
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Oneplus 2 Stuck in boot animation after root

so I recently tried to root my oneplus 2 to be able to flash cm13 onto it. I followed the guide oneplus provided on youtube (https://www.youtube.com/watch?v=KZaajUEybNM) exactly and got the same ...
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459 views

Change os variable for touch sensibility becasue when in sms writing mode random touched started

This problem happens when we are in text writing mode and then when switched to main page (home) random touches stopped. I suggest that wet screen maked it but when I go back to home page everything ...
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776 views

How to enable otg in moto e

I am using MOTO-E and working on lollipop OS. Here, OTG is not supporting. I have read it from google which Moto-E doesn't support OTG. My question is Will oTG work on OS 4.4 (Kitkat)? How to ...
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Windows phone, Android OS [duplicate]

I made the mistake of getting a windows phone because the price was enticing. I want to run android O.S. if at all possible, being a working full time school full time person I'm looking to save money....
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Help! Lg v10 OS update erased entire calendar

All past events, all scheduled events, gone. Also, google calendar is not available in list of calendars to sync/enable. It's not that I just failed to check a box, it's that it isn't even listed as ...
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60 views

No operative System and twrp

recently i installed a custom rom on my phone, then i decided to expand my phone memory on a trick i saw on youtube, where i had to go into twrp, unfortunately i clicked on delete system. afterwise ...