Hot answers tagged

72 votes

Android x86 Marshmallow not booting on Virtualbox and VMware Workstation

Found the solution! You have to edit menu.lst file. Here is how: boot in debug mode (usually the second option in boot menu) when booting stops (for me it just hangs there with flashing cursor and ...
ajira's user avatar
  • 721
13 votes

Use fingerprint to unlock the lock screen after booting Pixel 6

Unfortunately there is no way to use fingerprint as authentication directly after rebooting the device. The first unlock always have to be performed using the PIN/password, because the PIN/Password is ...
Robert's user avatar
  • 19.7k
10 votes
Accepted

Why does Android boot so relatively slow?

Few years back, I worked on Android boot time optimization, as a Android developer. Obviously, as part of this work, we first needed to analyse where Android spends time during booting. Below is the ...
AADAndroidEnthusiasts's user avatar
10 votes

Use fingerprint to unlock the lock screen after booting Pixel 6

Robert's answer describes why you unfortunately cannot unlock an android phone with a fingerprint after a reboot. However, depending on you password habits, there's a significant chance you can guess ...
Vaelus's user avatar
  • 201
9 votes

Is it possible to boot an Android phone from a USB drive?

It is possible in a sense, however. Given the limitations mentioned in @t0mm13b 's answer, it makes sense that the mentioned boot loader (lk) is incapable of doing this. So, we boot a custom kernel ...
Tamoghna Chowdhury's user avatar
9 votes

Android x86 Marshmallow not booting on Virtualbox and VMware Workstation

I'd like to extend and improve @Jay Smith answer based on personal experience. He is right in the core thing that the cause of the issue is VGA resolution used by Android, but he is wrong in his ...
Suncatcher's user avatar
8 votes
Accepted

Marshmallow not bootlooping, but not starting

I just came across this problem myself on my Nexus 5 running Android 6 and after tinkering with it for a few days, I was able to resolve it without wiping all my data, so I wanted to share what I did ...
DvdGiessen's user avatar
8 votes
Accepted

Using Android phone without battery

AFAIK, no. The fundamental reason is usage and the design that evolved based on it- mobile phone, as the name suggests, is meant to be used whenever and wherever, with periodic charging, unlike ...
beeshyams's user avatar
  • 40.7k
8 votes
Accepted

Booting kernel from fastboot

When you use fastboot boot FILE.img, the image is downloaded and written into the RAM and than the normal procedure to boot a boot.img is followed. No changes to any partition takes place. If the ...
Firelord's user avatar
  • 25.1k
8 votes
Accepted

Backup/dump kernel image (and full ROM) without root for Mediatek Devices

To answer my own question! Warning, in some very rare cases this doesn't work or could be dangerous. For example, Amazon Fire devices refuse to communicate with these tools despite being MediaTek. ...
Sruly's user avatar
  • 988
7 votes

How can I run a script on boot?

If you have Magisk installed you can place the .sh to: /sbin/.magisk/img/.core/service.d/ or to /sbin/.magisk/img/.core/post-fs-data.d/ Don't forget to make it executable: chmod +x your-script.sh. ...
H. Hess's user avatar
  • 171
5 votes

Using Android phone without battery

My Infinix Hot 4 battery exploded and was left without one at home. I did this by drawing a circuit with a pencil on the motherboard from the GND pin to -ve pin. This tricked the phone that it has a ...
user231043's user avatar
5 votes

How to fix a phone stuck at firmware update screen?

It may be an update to your device, but it sounds unusual because no device is allowed to update its firmware when the device battery is running below 30% anyhow, unless you clicked on Update Now ...
Lukas's user avatar
  • 365
5 votes

Use fingerprint to unlock the lock screen after booting Pixel 6

Vaelus' answer is the most useful one here, and did well to cover the actual kinds of tools you want to be looking into, so I won't repeat those here - this answer is more concerning the methodology ...
Hashim Aziz's user avatar
4 votes

How to enable adbd to listen to a port at boot time in Android?

Replace "service" by "persist" to keep it upon reboot : setprop persist.adb.tcp.port 5555
J.Jacobs's user avatar
  • 141
4 votes

Why does Android boot so relatively slow?

Android boot is slow? My phone has a Quad Core, 3 Gig of RAM ... Android (Both KitKat and Lollipop) takes some 80 seconds to boot to completion. My phone is only dual core with 1G RAM (Zenfone 4) ...
bangbambang's user avatar
4 votes

Booting Android from SD card

I have been successfully able to boot from SD card on QMobile Z8 by: Replicating eMMC partition table by partitioning SD card on a Ubuntu machine using parted and fdisk Flashing factory firmware ...
Irfan Latif's user avatar
  • 20.2k
4 votes

Android x86 Marshmallow not booting on Virtualbox and VMware Workstation

Some progress here, but not the real thing. The following allowed me to boot Android x86 6.0 under VirtualBox correctly - but only once: 1) When booting the installation image, the initial screen ...
Jay Smith's user avatar
4 votes

Android x86 Marshmallow not booting on Virtualbox and VMware Workstation

I also had problems with Android x86 vitual box on a Windows 7 Pro x64 AMD machine. I suppose we are all going to have slightly different issues depending on our architecture/hardware but they all ...
PassingGuest's user avatar
4 votes
Accepted

Is my Android device booting into a "stealth" partition?

Seems I’ve found the answer at https://andi34.github.io/faq.html Quote: I can't change my rom, wipe / format doesn't work. Nothing changed after flashing with Odin. 16 GB Tab 2 have a known ...
e-sushi's user avatar
  • 201
4 votes
Accepted

How to disable bad RAM addresses and fix bad storage blocks?

This might not be a direct solution to your problem, but I'm sharing my thoughts on it. SHORT ANSWER It's not very likely for RAM on embedded systems to get defective. And if it does, solutions ...
Irfan Latif's user avatar
  • 20.2k
4 votes
Accepted

Can I flash Android on device with overwritten mmcblk0?

/dev/mmcblk0 is whole MMC storage chip which includes GUID partition table (GPT) and all partitions. On Android devices some of these eMMC partitions hold bootloaders (like sbl, aboot on Qualcomm ...
Irfan Latif's user avatar
  • 20.2k
4 votes

Where is Boot flow screen displayed in android

This is all happen in OEM bootloader (proprietary) before android is started. This screen is displayed before splash screen only in yellow/orange/red state
alecxs's user avatar
  • 3,979
3 votes
Accepted

A different kind of Safe-mode?

After doing some more research specially on Xposed itself, found out this way of booting is a fail-safe option to disable Xposed Framework at boot time which seems to be a feature of the framework ...
zxcmehran's user avatar
  • 171
3 votes

ADB can discover devices but not fastboot

I am on MAC Sierra facing same problem. The actual problem is with fastboot that I was using. It was an older version. So, I have downloaded android sdk and took fastboot from platform-tools of it and ...
user204340's user avatar
3 votes

How can I run a script on boot?

I tried all these methods and none of them worked for me. What worked however was based on lord-ralf-adolf's answer here How to run a script on boot in CM12.1? basically, find the file /system/etc/...
Ramast's user avatar
  • 196
3 votes

How can I stop applications and services from running?

Preventing app auto start after device reboot on Android 13+ Since Android 13 Google added a possibility to prevent apps from automatically starting after a device reboot: If the user places your app ...
Robert's user avatar
  • 19.7k
3 votes
Accepted

How can I disable the startup/boot sound on a rooted Samsung Galaxy S5?

With root access, simply rename, move, or delete the file: /system/media/audio/ui/PowerOn.ogg This solution may work for other Samsung Galaxy models, and perhaps other makes as well, provided the ...
Bort's user avatar
  • 989
3 votes
Accepted

Allow instant boot after phone with empty battery is connected to power

tl:dr Mobile devices unlike laptops are not designed to run off the charger, without a battery (there are exceptions of some devices, way back). A fully discharged battery is as good as no battery, ...
beeshyams's user avatar
  • 40.7k
3 votes
Accepted

Ran "adb reboot bootloader" now can't boot past logo (Azpen A746)

Fully draining the battery will unbrick an Azpen A746HD in this situation. I did further testing and was able to repeat the conditions for bricking and unbricking the tablet: Running adb reboot ...
blendenzo's user avatar
  • 181

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