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7

Since 4.4 the "WRITE_EXTERNAL_STORAGE" permission no longer grants WRITE access to the secondary(external) sdcard. (This is a simplified explanation, 4.4 did not force this change.) The necessary permission to do so ("WRITE_MEDIA_STORAGE") is only avialable to system apps. Since 5.0 it is possible to gain write access through Androids storage provider ...


5

A factory reset reformats the phone's user-data partition, but it's not a "secure" wipe; it doesn't overwrite everything with zeroes. If you want to be sure everything is erased, you can encrypt the phone first (which overwrites all the data with encrypted versions of itself), then do a factory reset (which sets up a new unencrypted filesystem). Note that ...


3

I have a G4, and you're right. The Gallery app doesn't have a confirmation message, just a floating dialog that has an Undo button which disappears after a while. I'd recommend using another app instead. I use QuickPic. When you click the delete button, a popup with a delete icon appears. It serves as sort of a confirmation message. If you click the ...


2

On a rooted device, go to /data/system/netstats/ and delete all the 0files there. Reboot the device and the data history would be gone. Worked on Android 4.2.1 and 5.0.2, so should work on Kitkat as well. It clears both SIM data as well as of Wi-Fi. This would not reset the current cycle you would be having. I believe /data/system/notification_policy.xml ...


2

No. Contacts' pictures are kept separately from the original photos you added them from. They're stored with the contacts database, not with the photos on the SD card. Deleting photos from the Gallery app or wiping the SD card won't affect them.


1

Performing a factory reset doesn't make you lose root access, since the root handling app (SuperSU or KingUser or whatever) is installed as a system app and only the /data and /cache partitions are formatted by a factory reset. The /system partition remains unaffected.


1

Wow, that looks crazy! /storage/emulated/0 isn't "real" and you shouldn't be deleting 0, if you are trying to clean out /data/media/0 pass a wildcard rm -fr /data/media/0/* that will flush out your internal "sdcard" 


1

To uninstall apps. Open Settings and find the Application Manager and select the app you want to uninstall. Then you will see the option to uninstall it. If you only see disable, that means it's a system app and will require root to remove. What does "to root a phone" mean? How do I root my Android device? I've rooted my phone. Now what? ...


1

Just download an factory image From : https://developers.google.com/android/nexus/images Steps : 1.Unlock bootloader 2.root phone 3.flash new image 4.lock Bootloader How do I uninstall the Android update 5.0.1 back to 5.0? hope this helps.


1

I have found exactly what I'm looking for in vanilla Android: Settings > Security & Screen Lock > Device Administrators > Local Wipe Policy > Deactivate


1

There's no such thing built-in to Android currently. However, you might wish to take a look at AutoErase: When the number of failed unlock attempts reaches the limit that you specified, AutoErase will reset the device to factory default and erase all user data. When the unlock attempts fail, messages warning that the device will be erased after ...


1

Even if disabled as device admin it may not uninstall - you need to go to avg screen, press the anti theft protected button, then disable/ deactivate, then log out - after that freshly open play store, ie it must not be running in the background, select avg in 'my apps', and you'll see the uninstall button on the avg app details screen.


1

Here the step: Backup All SMS using "SMS Backup & Restore" app to your externalCard Your devices must be rooted Open root explorer, go to /data/data/com.android.providers.telephony/databeses/mmssms.db if you want you can copy the current "mmssms.db" to externalCard for backup too Delete current "mmssms.db" file Restart phone Now all your sms will ...



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