Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

Touchscreen quality of the i9003

OP nhenze

22nd September 2011, 08:54 AM   |  #1  
OP Junior Member
Thanks Meter: 0
 
2 posts
Join Date:Joined: Jul 2009
Hi,

I recently did some research about smartphones' touchscreens and found some strange results for the Samsung GT-i9003 Galaxy SL. It seems to be the only popular Android device with a touchscreen that has a lower resolution than the actual number of pixels.

For research purpose I developed a simple Android game that collects some hundred million touch events from different devices (see [1]). Visualizing the touch distribution for the i9003 shows that the touch-part of the GT-i9003′s touchscreen has only half the resolution of a regular Galaxy S (see [2]). There are two rows of pixels that can be tapped followed by two rows that are cannot be tapped.

Since we don't have an i9003 I'm curious if what I found in the data makes a difference for the device's usability. If one of you has an i9003 I would like to know if you have any problem with the screen's accuracy or latency. In particular if someone has compared the i9003 and the i9000.

Thanks in advance,

Niels

[1] 100,000,000 Taps - Analysis and Improvement of Touch Performance in the Large: nhenze.net/uploads/100000000-Taps-Analysis-and-Improvement-of-Touch-Performance-in-the-Large.pdf
[2] Does the touchscreen of your Galaxy S sucks?: nhenze.net/?p=831
22nd September 2011, 06:00 PM   |  #2  
Senior Member
Thanks Meter: 7
 
103 posts
Join Date:Joined: Jan 2009
I'm astonished...such low quality...even in the i9000...those lines are so horribly uneffective!
23rd September 2011, 08:49 PM   |  #3  
OP Junior Member
Thanks Meter: 0
 
2 posts
Join Date:Joined: Jul 2009
I played with the i9000 and I don't think that one can notice the missing lines. They are only one pixel and your finger is much bigger but the i9003 is just too strange. Especially considering that Android gives you sub-pixel accuracy for touch positions.
23rd September 2011, 09:46 PM   |  #4  
tanu_invincible's Avatar
Senior Member
Flag Mumbai
Thanks Meter: 4
 
227 posts
Join Date:Joined: Apr 2011
More
i'd the i9003...and it doesnt make any diffference..both i9000 and i9003 has the same touchscreen response..!!
Post Reply Subscribe to Thread

Tags
i9000, i9003, resolution, touchscreen
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes