[Galaxy S III Android Development] anderson mendes:
This is ViperOS​

Disclaimer:

We are not responsible for anything that may happen to your phone as a result of installing custom roms and/or kernels. you do so at your own risk and take the responsibility upon yourself.

"This is a user friendly thread. All feature requests will be heard and considered. I am not against anything that doesn't stray too far away from the original idea of the ROM! Helping one another is also encouraged! Please be respectful and you will always be treated the same way, we are all here for a good experience."

About:

We are a Brazilian team, ViperOS aims to bring stability and useful features. If you are looking for a stable ROM with true tested features, minimal bugs and no Lineage bloatwares, then this is the place to be.

Features:

Statusbar

* Traffic indicators

* Statusbar items

* Clock & date

* Battery icon settings

* Carrier label

* Quick settings personalization

* Other statusbar settings

* VPN icon toggle

* Data saver icon toggle

* VoLTE icon

* Viper statusbar logo

* Option to Display Data Disabled indicator Icons

* Ticker

* Heads up toogle, timeout and snooze function

* Add/Remove QS shortcuts with one click

Lockscreen

* Custom lockscreen settings

* Lockscreen weather

* Option to hide lockscreen clock, date & alarm text

* Hide status bar on lockscreen

* Hide power menu on secure lockscreen

* Hide quick settings on secure lockscreen

* Lockscreen flashlight, double tap anywhere to sleep and disable media image

Multi tasking

* Round button on recents

* Recents style toggle: cards and grid

* Recents membar

System

* Viper Color Engine built from scratch

* Lawnchair as default launcher (+DT2S)

* Navbar enable/disable

* Pixel navbar (with animation) toggle

* Dynamic navbar

* Navbar dimensions

* Navbar button layout

* Hardware keys binding

* Hardware keys enable/disable

* Kill app with back button

* Power menu customization

* Heads up toogle, timeout and snooze function

* Reset battery stats

* Wired headset: make ringtone audio focus customizable

* Live volume steps

* Hide arrows in network traffic indicators

* Fingerprint authentication vibration

* Toast icon switch

* Advanced Bluetooth, Data, Wifi Toggles

* Disable/enable screenshot sound

* QS header icon settings

* Header date and time positions

* Unlock keystore with fingerprint

* Ability to toggle vibration when double tapping power button for camera

* Double tap to sleep on navigation bar

* Drop Lineage LockClock, use OmniJaws

* Drop AOSP Clock app, use from Google

* Custom ambient display settings

* Three Fingers Swipe for Screenshot

* PA Accidental Touch

Many other customizations, install and take a look

Download:

Official website: Download

GApps:

OpenGapps : OpenGApps

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Credits & Thanks:

All ViperOS Team

LineageOS team

ResurrectionRemix team

crDroid team

And all other open source Devs/Teams I may have missed!
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Other links

Telegram channel

Google+ community

ROM source

Tree of all official devices
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XDA:DevDB Information

ViperOS, ROM for the Galaxy S3 i9300

Contributors

TeamViperBRASIL

Source Code:https://github.com/ViperOS-Project

ROM OS Version: 7.1.1 Nougat

Based On: LineageOS