|Compatible networks||GSM: 900/1800/1900
HSPA: 14.4 Mbps 900/2100
|First released||CN: February 2014
IN: July 2014
|Successor||Xiaomi Redmi 2|
|Dimensions||137 mm (5.4 in) H
69 mm (2.7 in) W
9.9 mm (0.39 in) D
|Weight||158 g (5.6 oz)|
|Operating system||Android v4.3 Jellybean with MIUI v5|
|System on chip||1.6 GHz Qualcomm Snapdragon 400 MSM8228|
|CPU||Quad Core ARMv7 1.6 GHz|
|GPU||Adreno 305 GPU|
|Memory||1 GB (861 MB usable)|
|Storage||8 GB (5.7 GB usable)|
|Removable storage||Supports upto 32 GB
|Battery||2,050 mAh, 7.6 Wh, 3.8 V, internal rechargeable Li-Po, user-replaceable|
|Data inputs||Multi-touch capacitive touchscreen;
capacitive touch-sensitive buttons
|Display||4.70 in (119 mm) IPS LCD with AGC Dragontrail Glass
1280×720 px (312 ppi)
|Rear camera||8 Megapixel auto-focus with LED flash|
|Connectivity||GPS / GLONASS, Wi-Fi 802.11 b/g/n, Bluetooth 4.0, Micro-USB|
The Xiaomi Redmi 1S, code-named armani, is a smartphone released in May 2014, developed by the Chinese smartphone manufacturer Xiaomi Inc.. It is a part of the Redmi series of smartphones, and succeeded the Redmi 1. Visually similar to its predecessor, it comes with a 4.7-inch screen, a quad-core 1.6 GHz Cortex-A7 processor and runs Android version 4.3 (Jellybean), bundled with the proprietary MIUI v5 user interface.
Noted for its low price (₹5999 (US$95) in India), the Redmi 1S is an extremely popular and a demanded smartphone. Xiaomi opted to sell the smartphone online in order to comply with their minimal capital input. Flipkart is the exclusive online retailer of Redmi 1S in India, and the phone's sales are currently on hold.
The Redmi 1S offers Android 4.3 Jellybean, with proprietary MIUI v5 custom graphical user interface pre-installed by the manufacturer, with a planned OTA upgrade to Android 5.0 (Lollipop) with MIUI v6. The Redmi 1S comes with a factory-unlocked bootloader, allowing users from the outset to further develop the OS and "root" the device, or gain legitimate privileged control in Android's subsystem. Software-development community XDA-Developers was among the first to release a custom ROM and kernel for the phone, and since then the phone can unofficially be upgraded to newer versions of the Android OS family and other aftermarket versions. The Redmi 1S has achieved unofficial stable builds of CyanogenMod 11 (Android 4.4), 12 (Android 5.0) and 12.1 (Android 5.1), MIUI v6 (Android 4.4.4), and an alpha version of Mokee OS (Android 4.4.4). Its kernel is open sourced and is available to developers for modification.
The Redmi 1S has a plastic chassis that is 5.39 in (137 mm) long, 2.72 in (69 mm) wide, and 0.39 in (9.9 mm) thick, and weighs 158 g (5.6 oz). The screen is a 4.7-inch IPS LCD capacitive touchscreen, supporting 16-million colors at a resolution of 1280 x 720 pixels, equating to around 312 pixel-per-inch density. The device features a 1.6 GHz Cortex-A7 quad-core central processing unit (CPU) and an Adreno 305 graphics processing unit (GPU), in conjunction with an accelerometer, gyroscope, compass and a proximity sensor. The device is also equipped with 1 GB RAM and 8 GB internal storage, supporting microSD expansion up to 32 GB. Other features include a microphone, GPS, an 8-megapixel rear camera with auto-focus and LED flash, and a 1.6-megapixel front camera. The rear camera is capable of recording videos at 1080p resolution, while the front camera supports 720p resolution recording. The rear of the smartphone features a plain plastic surface with a brushed metal Xiaomi logo at the center-bottom of the rear cover. The smartphone is shipped with a 2,000 mA AC power charger, for charging its 2,050 mAh battery.
- "Xiaomi Redmi 1S - Full Phone Specifications". GSMArena. Retrieved 21 February 2015.
- Ayyar, Kamakshi. "Decoding Motorola, Xiaomi's online flash sales: Why it's a win-win-win". Firstpost. Retrieved 23 February 2015.
- "CyanogenMod 11.0 for Xiaomi Redmi 1S". XDA Developers. Retrieved 21 February 2015.
- "MokeeOS 5.0.1 Test Build for Xiaomi Redmi 1S". XDA Developers. Retrieved 21 February 2015.
- "Kernel source code for Xiaomi Redmi 1S". GitHub. Retrieved 21 February 2015.