How activate ROOT permission in Samsung Galaxy S3

[Pawelk198604]

I bought DU Battery Saver Pro to conserve some power in my phone

I tried activate function "Lower CPU Frequency: when screen is locked" but it's require ROOT permission :(
How to activate it.

[YNM]

Well, basically the application is asking for root access, which is common in Linux system (careful though, "root" is pretty much the system itself) but is disabled on Android, defaultly, due to the dangers it imposes on unexperienced user. On common linux system, an interface to authorize (or access) root without opening the root itself (and allowing all application to change the system) is by logging in as a superuser, which is also unavailable on Android. So, in order to gain root access, a superuser is required, amd the root access must be opened. The process to enable root access on Android is by "rooting" the phone. Search it up, recommend going to xda-developers.

Rooting aside, I think DU things isn't that useful... You'll find better apps once rooted (like, greenify ? It's really light, and is useful). Also then you can proceed to using custom ROM (well, custom Android (or android based) OS) which is mostly lighter and have more features. Had an S3 for like three years, rooting it few months after buying before being lazy maintaining the OS and some bad things happened...

Counting that S3 is old by now, guess rooting it have more pros than cons (like, proper OS support, tweakings to make it better etc).

[steve_v]

You need an 'su' binary (such as SuperSU) to get root user permissions and allow apps to do the same. - same as using 'su' for system admin tasks on a *nix box.
It's that simple, but there are various methods to overcome the "chicken & egg" puzzle -> you need to be root to install su, but you need su to become root... most of these require flashing su onto the rom via recovery mode or ADB.
Some manufacturers make it harder by locking the NAND... (S-on) but the S3 should be ok in this regard.
Search for your model on xda-developers, someone has most likely upped a flashable su installer & instructions.
Most custom ROMs come with su, and are labelled as 'pre-rooted'. I recommend something Cyanogenmod based. :)

Be aware of warranty issues, also some (mostly internet banking etc.) apps will refuse to run on a rooted device (though there are ways around this too).
Most importantly, pay very close attention to which apps you grant root permissions to... it's exactly the same as the root account on a Unix/Linux/BSD etc. machine - i.e. full access to everything. Apps are usually sandboxed in the Android java VM, granting root allows tampering with the Linux OS underneath and direct modification of the filesystem.

If you don't understand the implications, or your only purpose in rooting is to get some random app to work, don't. Do some reading first.

[LordFerret]

All of a few seconds worth of Google search for "root samsung galaxy s3"...
[URL]http://joyofandroid.com/root-samsung-galaxy-s3/[/URL]

[11of10]

Wrong forum my friend. For all your Android (ab)use topics, you need XDA-developers forums. In any case, if you don't know what root access is, think twice about it.

And as someone who used various battery savers, both rooted and unrooted, I'll give you an advice: try greenify, free version. It can be set to kill apps (well, hibernate them) when you lock your phone, and in a donation version, you can also make it use push.

Just for my own curiosity: How long does your battery last, and do you use Google play services (my Huawei G630 - similar to S3 configuration lasts at least two times longer when I disable that). Now, if you have Android 5.x you might discover that disabling play services disables play store so... it might not work for you.

Now, on XDA, you might stumble upon a thread called: Amplify+Greenify+Power Nap. Now, That combination, if you know what you're doing (and no offense, but I believe you don't) might really increase your battery life, but at the expense of somewhat laggy messages on whatsapp or viber, perhaps.

Long story short: Don't bother too much with battery savers. Most of them don't help

[Pawelk198604]

[quote name='11of10']Wrong forum my friend. For all your Android (ab)use topics, you need XDA-developers forums. In any case, if you don't know what root access is, think twice about it.

And as someone who used various battery savers, both rooted and unrooted, I'll give you an advice: try greenify, free version. It can be set to kill apps (well, hibernate them) when you lock your phone, and in a donation version, you can also make it use push.

Just for my own curiosity: How long does your battery last, and do you use Google play services (my Huawei G630 - similar to S3 configuration lasts at least two times longer when I disable that). Now, if you have Android 5.x you might discover that disabling play services disables play store so... it might not work for you.

Now, on XDA, you might stumble upon a thread called: Amplify+Greenify+Power Nap. Now, That combination, if you know what you're doing (and no offense, but I believe you don't) might really increase your battery life, but at the expense of somewhat laggy messages on whatsapp or viber, perhaps.

Long story short: Don't bother too much with battery savers. Most of them don't help[/QUOTE]

Thanks :-)
But all that background Apps make me mad :mad: why the hell it's run 20 or so apps even if the data transfer is disabled.

[Nibb31]

Just because they are in the background doesn't mean they are running or using battery. It just means they are loaded in memory, not that they are using any resources. Android is a flavour of Linux, so it only frees memory when you need it. The way Linux sees things is that free memory is wasted memory. You might as well leave the apps there, because it is likely that you will need them later.

Android manages its memory by keeping the apps you use the most in memory and freeing the space when it's needed. It's better to let it do its thing. If you close apps manually or with a third party app killer, you will just prevent it from learning which apps need to be kept and which can be closed, so you will ultimately make things less efficient.

[obsidian_x]

Yep, what Nibb31 said. Most battery "savers" actually end up using more battery (don't know specifically about DU). Basically if you kill a task that is required by another (eg Whatsapp might use a service to listen for new messages, you kill it), android will automatically restart that app/service etc. If you keep killing it, loading it to memory will require more power, than just "leaving it alone".

Turning off wifi/4g and disabling gps will probably give you more battery life than those task killers (at the expense of not getting messages until you re-enable). Other built in features that slow the CPU and dim the screen will probably be better too. I use one called timerific but it's not geared to enable wifi & 4g for a few minutes every hour or something like that that though.

[Latcarf]

I recommend rooting. It's a hassle to wrap your head around but there is a lot of fun stuff you can do including changing the boot animation/ boot audio (which is kind of silly but really cool, check out Tasker if you want to have some real control over android rooted or un-rooted). The S3 should be easy to root since so much time has passed.

Strong word of caution for Samsung. I rooted my previous phone (S4) and due to KNOX, attempting to upgrade Android bricked the phone completely.

Let me drill that in: DO NOT ATTEMPT ROOT IF VERIZON && KNOX IS INSTALLED.

[11of10]

Yes, definitely before you attempt to root your phone, even with some "one click root" software, first take a few days, weeks perhaps, to really know WHAT you're doing.