I’ve been using Micromax Canvas 4 and here is summary of my experiences with it:
- No Management Software – hard to export the contacts from Samsung Kies to Micromax devices
- Camera
- 13 MP camera is not even comparable to my older Samsung 5 MP and/or Motorola 3 MP
- Picture quality is good only when the Focused object is still (not moving)
- Picture if zoomed shows the sparks/dots…underlying picture quality is poor
- If you use Flash in light..you don’t see any picture..it all simply resulting in Sparkles
- very often hangs while taking pictures
- Flip Cover
- The default flip cover that comes with device causes more scratches on the screens due to it’s gum/glue traces after removing it’s cover
- High Radiation
- While doing net speed tests, noticed high radiations and device getting very hot
- Speaker/volume
- Not bad. But still my Motorola/Samsung devices produces more sounds
- Would be an issue for folks who love to show/share multi-media in a group/friends
- Weight
- Is the only advantage I noticed with this device
- Android Apps
- Camera App is the worst/useless – Instagram making better quality photograph on the device
- FM Radio – switching between stations taking couple of 10 – 30 seconds
- No good games – You’ll get Fruit Devil, NFS Shift, The Darkman all are old and crappy
- Memory
- Internal memory 16 GB is split across
- 1 GB for Phone Storage
- 2.4 GB for Internal Storage
- 10 GB for External Storage
- You can insert upto 32GB SD card
- Internal memory 16 GB is split across
- Network Speed
- Do NOT use Reliance 2G, none of the Google Play, Youtube, Facebook, etc will load
- Use Airtel/Vodafone 2G if you need to use 2G network
- Video/Media Players
- Default installed Music/Video players aren’t great in look and options
- I failed back to MX/VLC Player
- Security
- No good Security software – you’ll get “M! Security app” not much trustable or options to choose
- Face Racognization to unlock the Device – Worked fine
- SMS
- My Airtel SIM always been reported to be FULL despite I have Set SMS storage location setting to save messages to Phone. Seems to be an Android bug
- g
Detailed hardware report generated by using “Hardware Info 3.0” App:
Micromax A210
System (Android 4.2.1)
Model |
A210 |
Manufacturer |
Micromax |
Device |
A210 |
Product |
A210 |
Brand |
Micromax |
Android Version |
4.2.1 (Jelly Bean) |
API Level |
17 |
Build ID |
JOP40D |
Fingerprint |
Micromax/s9111b/s9111b:4.2.1/JOP40D/:user/test-keys |
Display (1280×720)
Size |
1280×720 |
Refresh Rate |
62.82 Hz |
Default Orientation |
Portrait |
Physical Size |
4.59" (11.66 cm) |
Logical Size |
Normal |
Density |
320 dpi (Extra High) |
Pixels Per Inch |
X: 320; Y: 320 |
Processor (ARMv7)
Processor |
ARMv7 Processor rev 2 (v7l) |
Cores |
4 |
Max Frequency |
1209 Mhz |
Instruction Sets |
armeabi-v7a, armeabi |
SIMD Instructions |
NEON |
Memory (971 MB) = (1GB + 2.4 GB + 10 GB ~= 16 GB)
System RAM |
971 MB (1 GB) |
JVM Max Memory |
128 MB |
Internal Storage |
2523 MB (2.4 GB) |
External Storage |
10261 MB (10 GB) |
Back Camera (13 megapixel)
Afeng Max Focus Step |
0 |
Afeng Min Focus Step |
0 |
Aflamp Mode |
Off |
Aflamp Mode Values |
Of |
Antibanding |
Off |
Antibanding Values |
Off, 50hz, 60hz, Auto |
Auto Exposure Lock Supported |
True |
Auto Whitebalance Lock Supported |
True |
Brightness |
Middle |
Brightness Values |
Low, Middle, High |
Brightness_value |
0 |
Burst Num |
1 |
Cam Mode |
0 |
Cap Mode |
Normal |
Cap Mode Values |
Normal, Face_beauty, Continuousshot, Smileshot, Bestshot, Evbracketshot, Autorama |
Capfname |
/sdcard/DCIM/cap00 |
Contrast |
Middle |
Contrast Values |
Low, Middle, High |
Edge |
Middle |
Edge Values |
Low, Middle, High |
Effect |
None |
Effect Values |
None, Mono, Negative, Sepia, Aqua, Whiteboard, Blackboard |
Exposure Compensation |
0 |
Exposure Compensation Step |
1.0 |
Fb Sharp |
0 |
Fb Sharp Max |
4 |
Fb Sharp Min |
4 |
Fb Skin Color |
0 |
Fb Skin Color Max |
4 |
Fb Skin Color Min |
4 |
Fb Smooth Level |
0 |
Fb Smooth Level Max |
4 |
Fb Smooth Level Min |
4 |
Flash Mode |
Off |
Flash Mode Values |
Off, On, Auto, Red Eye, Torch |
Focal Length |
3.5 |
Focus Distances |
0.95, 1.9, Infinity |
Focus Mode |
Auto |
Focus Mode Values |
Auto, Macro, Infinity, Continuous Picture, Continuous Video, Manual, Fullscan |
Horizontal View Angle |
63 |
Hue |
Middle |
Hue Values |
Low, Middle, High |
Iso Speed |
Auto |
Iso Speed Values |
Auto, 100, 200, 400, 800, 1600 |
Jpeg Quality |
100 |
Jpeg Thumbnail Height |
128 |
Jpeg Thumbnail Quality |
100 |
Jpeg Thumbnail Size Values |
0x0, 160×128, 320×240 |
Jpeg Thumbnail Width |
160 |
Max Exposure Compensation |
3 |
Max Num Detected Faces Hw |
15 |
Max Num Detected Faces Sw |
0 |
Max Num Focus Areas |
1 |
Max Num Metering Areas |
9 |
Max Zoom |
10 |
Min Exposure Compensation |
3 |
Orientation |
90 |
Picture Format |
Jpeg |
Picture Format Values |
Jpeg |
Picture Size< /p> |
2560×1920 |
Picture Size Values |
320×240, 640×480, 1024×768, 1280×720, 1280×768, 1280×960, 1600×1200, 2048×1536, 2560×1440, 2560×1920, 3264×2448, 3328×1872, 2880×1728, 3600×2160, 4096×3072, 4160×3120, 3840×2160, 4096×2304 |
Preferred Preview Size For Video |
1920×1080 |
Preview Format |
Yuv420sp |
Preview Format Values |
Yuv420sp, Yuv420p, Yuv420i Yyuvyy 3plane |
Preview Fps Range |
5000, 60000 |
Preview Fps Range Values |
(5000, 60000) |
Preview Frame Rate |
30 |
Preview Frame Rate Values |
15, 24, 30 |
Preview Size |
640×480 |
Preview Size Values |
176×144, 320×240, 352×288, 480×320, 480×368, 640×480, 720×480, 800×480, 800×600, 864×480, 960×540, 1280×720, 1920×1080 |
Rotation |
0 |
Saturation |
Middle |
Saturation Values |
Low, Middle, High |
Scene Mode |
Auto |
Scene Mode Values |
Auto, Portrait, Landscape, Night, Night Portrait, Theatre, Beach, Snow, Sunset, Steadyphoto, Fireworks, Sports, Party, Candlelight, Hdr |
Smooth Zoom Supported |
True |
Vertical View Angle |
49 |
Video Size |
640×480 |
Video Size Values |
176×144, 480×320, 640×480, 864×480, 1280×720, 1920×1080 |
Video Snapshot Supported |
True |
Video Stabilization |
False |
Video Stabilization Supported |
True |
Whitebalance |
Auto |
Whitebalance Values |
Auto, Incandescent, Fluorescent, Warm Fluorescent, Daylight, Cloudy Daylight, Twilight, Shade |
Zoom |
0 |
Zoom Ratios |
100, 114, 132, 151, 174, 200, 229, 263, 303, 348, 400 |
Zoom Supported |
True |
Zsd Mode |
Off |
Zsd Mode Values |
Off, On |
Front Camera (4.9 megapixel)
Afeng Max Focus Step |
0 |
Afeng Min Focus Step |
0 |
Antibanding |
Off |
Antibanding Values |
Off, 50hz, 60hz, Auto |
Auto Exposure Lock Supported |
True |
Auto Whitebalance Lock Supported |
True |
Brightness |
Middle |
Brightness Values |
Low, Middle, High |
Brightness_value |
0 |
Burst Num |
1 |
Cam Mode |
0 |
Cap Mode |
Normal |
Cap Mode Values |
Normal, Face_beauty, Continuousshot, Smileshot, Bestshot, Evbracketshot, Autorama |
Capfname |
/sdcard/DCIM/cap00 |
Contrast |
Middle |
Contrast Values |
Low, Middle, High |
Edge |
Middle |
Edge Values |
Low, Middle, High |
Effect |
None |
Effect Values |
None, Mono, Negative, Sepia, Aqua, Whiteboard, Blackboard |
Exposure Compensation |
0 |
Exposure Compensation Step |
1.0 |
Fb Sharp |
0 |
Fb Sharp Max |
4 |
Fb Sharp Min |
4 |
Fb Skin Color |
0 |
Fb Skin Color Max |
4 |
Fb Skin Color Min |
4 |
Fb Smooth Level |
0 |
Fb Smooth Level Max |
4 |
Fb Smooth Level Min |
4 |
Flash Mode |
Off |
Flash Mode Values |
Off |
Focal Length |
3.5 |
Focus Distances |
0.95, 1.9, Infinity |
Focus Mode |
Infinity |
Focus Mode Values |
Infinity |
Horizontal View Angle |
60 |
Hue |
Middle |
Hue Values |
Low, Middle, High |
Iso Speed |
Auto |
Iso Speed Values |
Auto, 100, 200, 400, 800, 1600 |
Jpeg Quality |
100 |
Jpeg Thumbnail Height |
128 |
Jpeg Thumbnail Quality |
100 |
Jpeg Thumbnail Size Values |
0x0, 160×128, 320×240 |
Jpeg Thumbnail Width |
160 |
Max Exposure Compensation |
3 |
Max Num Detected Faces Hw |
15 |
Max Num Detected Faces Sw |
0 |
Max Num Focus Areas |
1 |
Max Num Metering Areas |
9 |
Max Zoom |
10 |
Min Exposure Compensation |
3 |
Orientation |
270 |
Picture Format |
Jpeg |
Picture Format Values |
Jpeg |
Picture Size |
2560×1920 |
Picture Size Values |
320×240, 640×480, 1024×768, 1280×720, 1280×768, 1280×960, 1600×1200, 2048×1536, 2560×1440, 2560×1920 |
Preferred Preview Size For Video |
1280×720 |
Preview Format |
Yuv420sp |
Preview Format Values |
Yuv420sp, Yuv420p, Yuv420i Yyuvyy 3plane |
Preview Fps Range |
5000, 60000 |
Preview Fps Range Values |
(5000, 60000) |
Preview Frame Rate |
30 |
Preview Frame Rate Values |
15, 24, 30 |
Preview Size |
640×480 |
Preview Size Values |
176×144, 320×240, 352×288, 480×320, 480×368, 640×480, 720×480, 800×480, 800×600, 864×480, 960×540, 1280×720 |
Rotation |
0 |
Saturation |
Middle |
Saturation Values |
Low, Middle, High |
Scene Mode |
Auto |
Scene Mode Values |
Auto, Portrait, Landscape, Night, Night Portrait, Theatre, Beach, Snow, Sunset, Steadyphoto, Fireworks, Sports, Party, Candlelight, Hdr |
Smooth Zoom Supported |
True |
Vertical View Angle |
40 |
Video Size |
640×480 |
Video Size Values |
176×144, 480×320, 640×480, 864×480, 1280×720, 1920×1080 |
Video Snapshot Supported |
True |
Video Stabilization |
False |
Video Stabilization Supported |
True |
Whitebalance |
Auto |
Whitebalance Values |
Auto, Incandescent, Fluorescent, Warm Fluorescent, Daylight, Cloudy Daylight, Twilight, Shade |
Zoom |
0 |
Zoom Ratios |
100, 114, 132, 151, 174, 200, 229, 263, 303, 348, 400 |
Zoom Supported |
True |
Zsd Mode |
Off |
Zsd Mode Values |
Off |
OpenGL 1.1 (PowerVR SGX 544MP)
General
Renderer |
PowerVR SGX 544MP |
Version |
OpenGL ES-CM 1.1 |
Vendor |
Imagination Technologies |
Limits
Texture Size |
4096×4096 |
Texture Units |
4 |
Viewport Size |
4096×4096 |
Modelview Stack Depth |
16 |
Projection Stack Depth |
2 |
Texture Stack Depth |
4 |
Lights |
8 |
Compressed Texture Formats
ETC1, Paletted |
Extensions
GL_EXT_debug_marker GL_OES_byte_coordinates GL_OES_fixed_point GL_OES_single_precision GL_OES_matrix_get GL_OES_read_format GL_OES_compressed_paletted_texture GL_OES_point_sprite GL_OES_point_size_array GL_OES_matrix_palette GL_OES_draw_texture GL_OES_query_matrix GL_OES_texture_env_crossbar GL_OES_texture_mirrored_repeat GL_OES_texture_cube_map GL_OES_blend_subtract GL_OES_blend_func_separate GL_OES_blend_equation_separate GL_OES_stencil_wrap GL_OES_extended_matrix_palette GL_OES_framebuffer_object GL_OES_rgb8_rgba8 GL_OES_depth24 GL_OES_stencil8 GL_OES_compressed_ETC1_RGB8_texture GL_OES_mapbuffer GL_OES_EGL_image GL_OES_EGL_image_external GL_EXT_multi_draw_arrays GL_OES_required_internalformat GL_IMG_read_format GL_IMG_texture_compression_pvrtc GL_IMG_texture_format_BGRA8888 GL_EXT_texture_format_BGRA8888 GL_OES_egl_sync GL_IMG_vertex_array_object GL_APPLE_texture_2D_limited_npot |
OpenGL 2.0 (PowerVR SGX 544MP)
General
Renderer |
PowerVR SGX 544MP |
Version |
OpenGL ES 2.0 build 1.9@2204701 |
Vendor |
Imagination Technologies |
GLSL Version |
OpenGL ES GLSL ES 1.00 build 1.9@2204701 |
Limits
Texture Size |
4096×4096 |
Texture Units |
8 |
Vertex Textures |
8 |
Combined Textures |
8 |
Viewport Size |
4096×4096 |
Renderbuffer Size |
4096×4096 |
Cubemap Size |
4096×4096 |
Vertex Attributes |
16 |
Vertex Uniforms |
128 |
Varying Vectors |
8 |
Fragment Uniforms |
64 |
Vertex Numeric Precision
Low Int |
[-2^8, 2^8] |
Medium Int |
[-2^11, 2^11] |
High Int |
[-2^24, 2^24] |
Low Float |
[-2^1, 2^1], 2^-8 |
Medium Float |
[-2^14, 2^14], 2^- |
High Float |
[-2^126, 2^126], 2^-23 |
Fragment Numeric Precision
Low Int |
[-2^8, 2^8] |
Medium Int |
[-2^11, 2^11] |
High Int |
[-2^24, 2^24] |
Low Float |
[-2^1, 2^1], 2^-8 |
Medium Float |
[-2^14, 2^14], 2^-10 |
High Float |
[-2^126, 2^126], 2^-23 |
Compressed Texture Formats
ETC1 |
Extensions
GL_EXT_debug_marker GL_OES_rgb8_rgba8 GL_OES_depth24 GL_OES_vertex_half_float GL_OES_texture_float GL_OES_texture_half_float GL_OES_element_index_uint GL_OES_mapbuffer GL_OES_fragment_precision_high GL_OES_compressed_ETC1_RGB8_texture GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_required_internalformat GL_OES_depth_texture GL_OES_get_program_binary GL_OES_packed_depth_stencil GL_OES_standard_derivatives GL_OES_vertex_array_object GL_OES_egl_sync GL_OES_texture_npot GL_EXT_multi_draw_arrays GL_EXT_texture_format_BGRA8888 GL_EXT_discard_framebuffer GL_EXT_shader_texture_lod GL_IMG_shader_binary GL_IMG_texture_compression_pvrtc GL_IMG_texture_compression_pvrtc2 GL_IMG_texture_npot GL_IMG_texture_format_BGRA8888 GL_IMG_read_format GL_IMG_program_binary GL_IMG_uniform_buffer_object GL_IMG_multisampled_render_to_texture |
Graphic Modes (RGBA 32bit)
RGB 16bit (565) |
RGB 16bit (565), Depth 24bit, Stencil 8bit |
RGB 16bit (565), Depth 24bit, Stencil 8bit, Samples x4 |
RGB 32bit (888) |
RGB 32bit (888), Depth 24bit, Stencil 8bit |
RGB 32bit (888), Depth 24bit, Stencil 8bit, Samples x4 |
RGBA 32bit (8888) |
RGBA 32bit (8888), Depth 24bit, Stencil 8bit |
RGBA 32bit (8888), Depth 24bit, Stencil 8bit, Samples x4 |
Sensors (3)
BMA050 3-axis Accelerometer
Vendor |
Bosch |
Range |
32.0 m/s² |
Resolution |
0.00390625 m/s² |
Power |
0.13 mA |
cm36283 Proximity Sensor
Vendor |
Capella |
Range |
1.0 cm |
Resolution |
1.0 cm |
Power |
0.13 mA |
cm36283 Light Sensor
Vendor |
Capella |
Range |
10240.0 lx |
Resolution |
1.0 lx |
Power |
0.13 mA |
Codecs (33)
OMX.MTK.AUDIO.DECODER.MP3
Media type: audio/mpeg
OMX.MTK.AUDIO.DECODER.AMR.NB
Media type: audio/3gpp
OMX.MTK.AUDIO.DECODER.AMR.WB
Media type: audio/amr-wb
OMX.MTK.AUDIO.DECODER.ADPCM
Media type: audio/x-adpcm-ms
OMX.MTK.AUDIO.DECODER.ADPCM
Media type: audio/x-adpcm-dvi-ima
OMX.MTK.AUDIO.DECODER.AAC
Media type: audio/mp4a-latm
OMX.MTK.AUDIO.DECODER.G711
Media type: audio/g711-alaw
OMX.MTK.AUDIO.DECODER.G711
Media type: audio/g711-mlaw
OMX.MTK.AUDIO.DECODER.VORBIS
Media type: audio/vorbis
OMX.MTK.AUDIO.DECODER.FLAC
Media type: audio/flac
OMX.MTK.AUDIO.DECODER.APE
Media type: audio/ape
OMX.MTK.VIDEO.DECODER.MPEG4
Media type: video/mp4v-es
Color Formats: |
0x7f000001 |
Profiles: |
Simple (0), Simple (0b), Simple (1), Simple (2), Simple (3), Simple (4), Simple (4a), Simple (5), AdvancedSimple (0), AdvancedSimple (0b), AdvancedSimple (1), AdvancedSimple (2), AdvancedSimple (3), AdvancedSimple (4), AdvancedSimple (4a), AdvancedSimple (5), Main (0), Main (0b), Main (1), Main (2), Main (3), Main (4) |
OMX.MTK.VIDEO.DECODER.H263
Media type: video/3gpp
Color Formats: |
0x7f000001 |
Profiles: |
Baseline (10), Baseline (20), Baseline (30), Baseline (40), Baseline (45), Baseline (50), Baseline (60), Baseline (70) |
OMX.MTK.VIDEO.DECODER.AVC
Media type: video/avc
Color Formats: |
0x7f000001 |
Profiles: |
Baseline (1), Baseline (1b), Baseline (11), Baseline (12), Baseline (13), Baseline (2), Baseline (21), Baseline (22), Baseline (3), Baseline (31), Baseline (32), Baseline (4), Baseline (41), Baseline (42), Baseline (5), Baseline (51), Main (1), Main (1b), Main (11), Main (12), Main (13), Main (2), Main (21), Main (22), Main (3), Main (31), Main (32), Main (4), Main (41), Main (42), Main (5), Main (51), High (1), High (1b), High (11), High (12), High (13), High (2), High (21), High (22), High (3), High (31), High (32), High (4), High (41), High (42), High (5), High (51) |
OMX.MTK.VIDEO.DECODER.VPX
Media type: video/x-vnd.on2.vp8
Color Formats: |
0x7f000001 |
OMX.MTK.VIDEO.DECODER.VC1
Media type: video/x-ms-wmv
Color Formats: |
0x7f000001 |
OMX.MTK.VIDEO.DECODER.MPEG2
Media type: video/mpeg2
Color Formats: |
0x7f000001 |
OMX.MTK.VIDEO.DECODER.DIVX
Media type: video/divx
Color Formats: |
0x7f000001 |
Profiles: |
0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8 |
OMX.MTK.VIDEO.DECODER.DIVX3
Media type: video/divx3
Color Formats: |
0x7f000001 |
Profiles: |
0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8 |
OMX.MTK.VIDEO.DECODER.XVID
Media type: video/xvid
Color Formats: |
0x7f000001 |
Profiles: |
0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8000, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8 |
OMX.google.aac.decoder
Media type: audio/mp4a-latm
OMX.MTK.VIDEO.ENCODER.MPEG4
Media type: video/mp4v-es
Color Formats: |
0x7f000200, Surface, 0x7f000200, YUV420Planar |
Profiles: |
Simple (0), Simple (0b), Simple (1), Simple (2), Simple (3) |
OMX.MTK.VIDEO.ENCODER.H263
Media type: video/3gpp
Color Formats: |
0x7f000200, Surface, 0x7f000200, YUV420Planar |
Profiles: |
Baseline (10) |
OMX.MTK.VIDEO.ENCODER.AVC
Media type: video/avc
Color Formats: |
0x7f000200, Surface, 0x7f000200, YUV420Planar |
Profiles: |
Baseline (1), Baseline (1b), Baseline (11), Baseline (12), Baseline (13), Baseline (2), Baseline (21), Baseline (22), Baseline (3), Baseline (31), High (1), High (1b), High (11), High (12), High (13), High (2), High (21), High (22), High (3), High (31), High (32), High (4), High (41) |
OMX.MTK.AUDIO.ENCODER.AMR
Media type: audio/3gpp
OMX.MTK.AUDIO.ENCODER.AWB
Media type: audio/amr-wb
OMX.MTK.AUDIO.ENCODER.AAC
Media type: audio/mp4a-latm
OMX.MTK.AUDIO.ENCODER.VORBIS
Media type: audio/vorbis
OMX.MTK.AUDIO.ENCODER.ADPCM
Media type: audio/x-adpcm-ms
OMX.MTK.AUDIO.ENCODER.ADPCM
Media type: audio/x-adpcm-dvi-ima
OMX.google.flac.encoder
Media type: audio/flac
AACEncoder
Media type: audio/mp4a-latm
OMX.google.raw.decoder
Media type: audio/raw
Features (29)
Graphics
OpenGL 2.0 |
Android Hardware
android.hardware.bluetooth |
android.hardware.camera |
android.hardware.camera.any |
android.hardware.camera.autofocus |
android.hardware.camera.flash |
android.hardware.camera.front |
android.hardware.faketouch |
android.hardware.location |
android.hardware.location.gps |
android.hardware.location.network |
android.hardware.microphone |
android.hardware.screen.landscape |
android.hardware.screen.portrait |
android.hardware.sensor.accelerometer |
android.hardware.sensor.light |
android.hardware.sensor.proximity |
android.hardware.telephony |
android.hardware.telephony.gsm |
android.hardware.touchscreen |
android.hardware.touchscreen.multitouch |
android.hardware.touchscreen.multitouch.distinct |
android.hardware.touchscreen.multitouch.jazzhand |
android.hardware.usb.accessory |
android.hardware.usb.host |
android.hardware.wifi |
android.hardware.wifi.direct |
Android Software
android.software.live_wallpaper |
com.google.android.feature.GOOGLE_BUILD |
Created with Hardware Info 3.0.0
2 thoughts on “My Micromax Canvas 4 Review: Do NOT buy it”
Nice review Govardhan…
Awesome review Govardhan. Also know that there are 2 major problems/bugs in canvas 4. To know, visit the link below and if you find any fix them please let me know
http://forum.xda-developers.com/showthread.php?p=54492765
http://forum.xda-developers.com/showthread.php?t=1944921&page=144