Here is a guide on How To Hard Reset Lenovo S90-A. It will solve the most common issue for Android OS like hanging, auto-restart, stuck on logo and many more. Before that let's take a short review for this smartphone.
Also known as Lenovo S90t Sisley for China
NETWORK Technology GSM / HSPA / LTE
LAUNCH Announced 2014, November
Status Available. Released 2014, November
BODY Dimensions 146 x 71.7 x 6.9 mm (5.75 x 2.82 x 0.27 in)
Weight 129 g (4.55 oz)
SIM Dual SIM (Micro-SIM, dual stand-by)
DISPLAY Type Super AMOLED capacitive touchscreen, 16M colors
Size 5.0 inches (~65.8% screen-to-body ratio)
Resolution 720 x 1280 pixels (~294 ppi pixel density)
Multitouch Yes
PLATFORM OS Android OS, v4.4.4 (KitKat)
Chipset Qualcomm MSM8916 Snapdragon 410
CPU Quad-core 1.2 GHz Cortex-A53
GPU Adreno 306
MEMORY Card slot No
Internal 16/32 GB, 1/2 GB RAM
CAMERA Primary 13 MP, 4208 x 3120 pixels, autofocus, LED flash, check quality
Features 1/3.2'' sensor size, 1.4µm pixel size, geo-tagging, touch focus, face detection, HDR
Video 1080p@30fps, check quality
Secondary 8 MP, autofocus, LED flash
SOUND Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
COMMS WLAN Wi-Fi 802.11 b/g/n, hotspot
Bluetooth Yes
GPS Yes, with A-GPS
NFC Yes
Radio FM radio
USB microUSB v2.0
FEATURES Sensors Accelerometer, proximity
Messaging SMS(threaded view), MMS, Email, Push Mail, IM
Browser HTML
Java No
- Active noise cancellation with dedicated mic
- MP4/WMV/H.264 player
- MP3/WAV/WMA/eAAC+ player
- Photo/video editor
- Document viewer
BATTERY Non-removable Li-Ion 2300 mAh battery
Stand-by Talk time MISC Colors White/silver, gray, pink, soft orange, blue
Price group 6/10
TESTS Performance Basemark OS II: 1377 / Basemark OS II 2.0: 513
Basemark X: 1909
Display Contrast ratio: Infinite (nominal) / 2.892 (sunlight)
Camera Photo / Video
Loudspeaker Voice 66dB / Noise 65dB / Ring 75dB
Battery life Endurance rating 54h
source: gsmarenaInstructions:
1. Power off the phone.
2. Press Volume Down Button ang Power On Button untill you see few selections like shown on the image below.
3. Use Volume Down Button to select " Factory Reset". then tap on Enter.
4. Wait until finish formatting.
5. Smile :)
