LeWa OS （Chinese：乐蛙）, or sometime also called as Music Frogs or жабкой, is a third party Android ROM produced by a Chinese company Lewa Technology. It mainly focus on developing ROMs for 1000-reminbi-phone(around US$126). As of April 2013, they have more than 2 million users, and as of July 2012, they are the Top 3 custom Android ROM in China, together with MIUI and DianXin OS(or called as Tapas OS). Lewa is also the first-ever custom Android ROM in the world that support dual-SIM standby feature. The ROM include its own lewa market, a power save mode, adjustable switches in notification bar, and some other modifications that are "optimized and localized" for Chinese users. It release new version via OTA update once a week every Friday. Other than models that are officially supported, phones can also use lewa by using ROM that are ported by others or by users themselves. Some believes that it provide a user experience and design that's similar but better than iOS or MIUI, some commentator also point out that the ROM is simple and energy-saving. However, there are also some Chinese commentator say that this system consume more battery over stock android.
Lewa's team start producing ROM for android even before Lewa established, since August 2009 for Android 1.5 cupcake.
Soon after Lewa technology established in Shanghai at April 2011, at June 2011 it received 20 million Reminbi angel investment from Green Pine Capital Partners(also the Round A investor of fanfou.com, coship and some other companies) and released its first official release at October 2011, and it released its first Open Build version that publicize some of its source code and providing compile tool for public at June 2012.
At Early July 2012, it received 50million (~7/9 million USD) funding from Tencent, and lewa started deeply integrating Tencent's mobile mangaer into their ROM since a month before that and provided a SDK to block spam messages base on that program in the system level. Observers believe this investment is part of Tencent's strategy to enter the ROM-flashing market.
At Late July 2012, It announced the release of M+ Platform and become the first team ever to specifically made ROM for MediaTeK platform Some forecasted that if this solution become mature, then people could directly get MTK's hardware and install lewa's software into it to DIY own phone.
Unlike most other ROMs in mainland China that want to profit by their user base and embedding software or services, LeWa's major profit source are of helping mobile phone manufacturers like ZTE, Huawei, TCL, THL or Zopo to customize their OS. And they're targeting at become the "CyanogenMod of China" or "CyanogenMod of MTK" by providing these phones more special features and UI that match Chinese user habits.
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