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What changes does factory reset really make?

What does factory reset in Sense settings actually do and is it the same as Factory reset in the bootloader menu? I'm asking because I was told by HTC support to do a factory reset even when I told them that I have successfully installed two different RUUs. Will the factory reset make any changes that the installation of an RUU doesn't make?

Same here, have a Factory Reset Question...
I'm currently running custom rom Android Revolution hd 3.6.9 - if I want to reformat and reinstall the rom, since I have so many apps already, and I just want to refresh, can I just hit settings / SD & Phone storage / Factory Data Reset?
Or do I need to re flash the same custom rom under recovery?
Or do a factory reset under recovery?

factory reset simply takes the rom at the state where it bootet the 1st time. the rom you have installed that is. so yes you can use it as a frest start, no need to flash it again. it doesnt do any changes that shouldnt be there. just puts the phone on it's initial state where your current rom booted the first time.

Cold Boot/Wipe Data/Factory Reset

Hi,
Can any expert tell me the difference between cold boot/wipe data/factory reset?
I know cold boot clears up the cache and all user data/apps will stay. Root will stay too.
factory reset will erase everything and all user data/apps will be gone. Will root stay?
How about the wipe data in cold boot menu?
Will we lose all user data/apps by choosing wipe data? How about root?
Thanks.

ubcjack said:
Hi,
Can any expert tell me the difference between cold boot/wipe data/factory reset?
I know cold boot clears up the cache and all user data/apps will stay. Root will stay too.
factory reset will erase everything and all user data/apps will be gone. Will root stay?
How about the wipe data in cold boot menu?
Will we lose all user data/apps by choosing wipe data? How about root?
Thanks.
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Click to collapse
As far as I know Wipe Data in the boot menu and Factory Reset are the same thing. As you say they will delete all user data and apps, leaving only system apps. You will lose root when doing this, but I have read that you can restore with OTA RootKeeper (if you backed it up before doing wipe), since this will be stored in the system part of the drive which doesn't get wiped. So you will need to redownload RootKeeper and restore root. I have not tried this, but from what I have read it seems to be possible.

http://forum.xda-developers.com/wiki/ASUS_Transformer_Pad/TF300T
Scroll down to bottom of page. Good description of cold boot vs reset.

ubcjack said:
factory reset will erase everything and all user data/apps will be gone. Will root stay?
How about the wipe data in cold boot menu?
Will we lose all user data/apps by choosing wipe data? How about root?
Thanks.
Click to expand...
Click to collapse
Factory reset will not touch the su binary (/system/bin/su and/or /system/xbin/su), which is what root depends on.
You'll need to reinstall superuser or supersu, but the actual rooting will stick.
Wipe data PROBABLY works exactly the same.
Factory reset is in other words safe for root.

Will a factory reset from CWM remove CWM?

and if so, is there an easy way to restore it?
note: i edited the title just now

Factory reset just deletes your user data apps.
If you want to remove/replace recovery you need to change a kernel.
sent from me

Factory data reset kept the photos, what else?

So I gave my old Nexus 5 to a friend and wanted to wipe the phone data.
The phone was rooted with supersu and xposed installed.
I did a "factory data reset" (under the "settings -> backup & reset" menu, NOT via the bootloader menu), and after it was done it rebooted into the new phone startup wizard mode. My friend then proceeded logging in under his Google account, and everything looked fine.
Today he tells me after taking a picture he saw that my whole photo collection was still on the phone. Why? It can't come from the cloud because this session never logged on my Google account.
Now I wonder what else stayed on the phone? I guess the Music folder, apart that anything I should worry about? Any way to flush everything that comes from my installation without my friend losing his current installation?

The phone was running a stock recovery or twrp?

audit13 said:
The phone was running a stock recovery or twrp?
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Click to collapse
twrp

Reset from the ROM settings will work to fully wipe the phone if it's running a stock recovery. With twrp installed, you need to wipe from twrp.

audit13 said:
Reset from the ROM settings will work to fully wipe the phone if it's running a stock recovery. With twrp installed, you need to wipe from twrp.
Click to expand...
Click to collapse
Ok, but now that I don't have access to the phone anymore, do you know if there's a list of what was deleted and what was kept? Apps, launcher theme and customization, application settings were indeed removed. But what about call and sms history? Saved passwords / searchi history? Download/Music directories?

Unfortunately, I'm not sure what would and would not be kept with a TWRP reset from the ROM settings.
Safest thing to do would be to boot into TWRP, perform a wipe of the data and cache, and then reboot. This will require the person to set up the phone again.

Recent tasks and search in setting is broken

Hi, after updating to android 10 recent tasks and search in settings is broken on my phone. I uninstalled stock launcher and replace it with Nova launcher, I think that causes the problem. Is there any way for me to fix it?

Greennie said:
Hi, after updating to android 10 recent tasks and search in settings is broken on my phone. I uninstalled stock launcher and replace it with Nova launcher, I think that causes the problem. Is there any way for me to fix it?
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Click to collapse
Yeah problem because your uninstall stock launcher...try reflash ozip firmware it can fix it if not working you must install manuall stock launcher or format data / factory reset.

faisalxp said:
Yeah problem because your uninstall stock launcher...try reflash ozip firmware it can fix it if not working you must install manuall stock launcher or format data / factory reset.
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Click to collapse
Could you point me to a guide that help me with reflash ozip/manual install stock launcher/ factory reset? The wipe data option in this phone doesn't seem to factory resetting it. Thank you for the response.

Greennie said:
Could you point me to a guide that help me with reflash ozip/manual install stock launcher/ factory reset? The wipe data option in this phone doesn't seem to factory resetting it. Thank you for the response.
Click to expand...
Click to collapse
If your not uninstall or just disble it, first try Enable. using adb with command. Deteail about bloatware you can follow this Link
Code:
adb shell pm enable com.oppo.launcher
If your device rooted, just unfreeze using app like titanium backup, etc.
If not working try Factory Reset...i think its working.
Setting -> Additional Setting -> Back Up and Reset -> Erase all Data (Factory Reset) -> Erase All Data input Lockscreen Pin / Pattern and select Erase Data an wait process to completed. Optional you can using Stock Recovery to WIPE data.
If Rooted Device you can Enter TWRP, and select Format Data after that better flash Ozip firmware again