Database Develop

Screen calibration trouble on Diamond

Heeeelpp !!!
I am going crazy over this problem :
I have had my HTC Diamond for less than two months and it has worked fine.
Two days ago it started misinterpreting my stylus' pointing on the screen.
It seem that the sensory-element in the screen has "moved"...
I have recalibrated the screen several times and it works for some 6 - 10 clicks.
Then the touch of the stylus is either not registered (if I try to reach something on top part of the screen) or I get results as if I was pointing between 0,1cm - 1,5 cm or more above og under (it varies) the actual contact point of the stylus (needless to say - I have given up using my fingertip).
I have tried with soft reset and have also tried the hard reset but to no avail.
It means that I can't use the phone for one thing and also, that most of the other functions are out of reach or very very hard to use because of the displacement.
Ozgur ? / Anybody ?
Chuckle

I have exactly the same problem on my wifes Diamond. Just havent got round to reporting it yet, thought i'd let her suffer a while first.

Suffering
mikey1963 said:
I have exactly the same problem on my wifes Diamond. Just havent got round to reporting it yet, thought i'd let her suffer a while first.
Click to expand...
Click to collapse
If it is acting up like mine, she must be crawling the walls by now and refusing any form of physical contact - just like the phone does ...
Mine is so bad now, that I can't call a number from my list or pick up the phone without 4 -5 tries at hitting the right spot let alone using any other function.
Against better knowledge I today updated the ROM with the new one from HTC - and it is quite evident, that is is a hardware thing.
I am handing in my complaints and the phone today.

I had the same problem on dutty's v2.2 rom yesterday. I reflashed a radio as i had problem with gps as well and it is good back again. Reflash your radio. If not flash radio and other rom. Usually HTC rom don't upgrade your radio!

Same problem here, my diamond stated misinterpreting slightly the stylus, now it's all just messed up, wherever you click, it detects the pulsation at the upper left side of the screen. It doesn't pass the calibration phase either.
I did not try to reflash the radio, just reflashed the stock SPL and original Vodafone ROM for sending it to RMA. However they are telling me that the whole RMA-thing will take AT LEAST 2 weeks. Over 15 days without my phone. I need it, that's madness! They should give the users a new phone and send the other back to HTC for whatever they want to do with it!
I think it happened after I tried playing a bad-formatted WAV file and the phone crashed. Should I try the Radio thing?

Whats wrong with my Diamond :(

hey guys
have been a reader more than a poster on this awesome site..
but i have run into some trouble :/
within the past week, everytime my phone gets slightly hot, the screen alignment goes totally out.. like really out..
for example i manage to open the notes app..
if i tap the extreme left side, the draw tool will draw in either the center, or even far right.. its extremely frustrating.
Happens mostly after a phone call, using gps, or plugging phone into usb/charging..
im using Panosha's 2.2 full
Radio .05
I have tried loading the original HTC rom that came with the phone... no difference..
any help would be greatly appreciated
oh, and i do re-align... 10-15 times a day..
when the phone is cool, it runs like a dream

eyetac said:
hey guys
have been a reader more than a poster on this awesome site..
but i have run into some trouble :/
within the past week, everytime my phone gets slightly hot, the screen alignment goes totally out.. like really out..
for example i manage to open the notes app..
if i tap the extreme left side, the draw tool will draw in either the center, or even far right.. its extremely frustrating.
Happens mostly after a phone call, using gps, or plugging phone into usb/charging..
im using Panosha's 2.2 full
Radio .05
I have tried loading the original HTC rom that came with the phone... no difference..
any help would be greatly appreciated
oh, and i do re-align... 10-15 times a day..
when the phone is cool, it runs like a dream
Click to expand...
Click to collapse
...sounds like a hardware issue!

really? :/
damn
its only 2 months old..
wouldnt have anything to do with cooked roms right?
i really cant afford a void warranty

eyetac said:
really? :/
damn
its only 2 months old..
wouldnt have anything to do with cooked roms right?
i really cant afford a void warranty
Click to expand...
Click to collapse
When you have the same probs with the htc original rom, then it has nothing to do with a cooked roms :-(

http://www.youtube.com/watch?v=5-IUzerAT0s
exactly what mine does
even right after a screen re-align
sigh

cyron_at said:
When you have the same probs with the htc original rom, then it has nothing to do with a cooked roms :-(
Click to expand...
Click to collapse
ok, thanks dude
will take it in and hopefully get a replacement

another example of what mine is doing pretty much to the T
http://www.youtube.com/watch?v=ZhQIyqnTkS4&feature=user
if anyone may have a solution.. please let me know asap.. as i will try taking it in on saturday
thanks guys

damn, mine does the same from time to time!
does anybody have a solution?
did a replacement fix the problem?

unfortunately i havnt had a chance to take it in yet, but i have logged the problem with my service provider..
the problem occurs alot more when i used panosha's rom/s
with the default (and now alphazero) the problem seems less frequent, but definitely still happens..
happened badly yesterday when i used gps to get my girlfriend to a casting, but switched on car A/C and after 5 minutes it was cool again *shrug*
its really annoying though
will let u know when i finally get to taking it in, unless u get there first

Hi there, I have the exactly problem what you had. Whenever the machine is hot, it becomes mad. Any solution could be reslove the problem?

It really sounds like a hardware issue... When you return the phone to the store please flash back to the original stock rom (for warranty purposes )

same problem
i am getting he same alignment problem.i do it many times a day but still tapping somewhere on screen taps the other way.very difficult to dial phone numbers

cyron_at said:
...sounds like a hardware issue!
Click to expand...
Click to collapse
i dont think its an hardware issue,as after i align it works fine for few hours and then i have to align again to make the taps work acurately.........i have heard there is a cab file for it.if any one can post it here.........................or make a cab file so that clicking it makes the alignment as it was default with the new phone

It is a hardware issue. the screen somehow (usually when carried in front pants pocket) will get pressed and SHIFTED. Then screen pushes against the side-cover and this fools the touch-sensitivity of the screen. Try yourself - try to shift screen to one or other side, and directly after it will be better. it's still a service matter though. Send it for repair.

This is a known issue. You need to exchange the unit for a new one.

hey guys...
so late last year i took the phone in and it spent 3 weeks at leaf (HTC distributer here is south africa)
i got the phone back, turned it on in the store.. and guess what... still screwed..
i threw my toys to say the least and got a brand new phone..
the new phone was 110% up until 2 weeks ago..
it started doing the same damn thing (to a lesser extent)
i have found that its a connection problem..
the touch pad is very all over the place if used normally (so basically its unusable)
but if i hold down the top left of the phone(pushing down just above the start menu) with my left hand and use my fingers on my right.. the phone works perfectly again..
does anyone know how to fix this?
its so frustrating, especially knowing im going to be without it for 3 weeks or more again

hmmm ...
i heard that the radio-part is for managing the curcuits.
try an other rom.
but i cant give garanty, i hard it only.

Diamond: some production series better than others?

I just got my Diamond back from repairs and wanted to compare experiences:
1)
I first bought a Diamond two months ago. It came with 1.37 ROM series on it, the screen wasn't too yellowish, but touch function wasn't responsive and the GPS was a MESS!
(of course, I tried many ROMs official and unofficial, almost every Radio ROM and various Hard-SPL. None of that fixed the problems.)
I could cope with with the other flaws, but I just couldn't bear my GPS wasn't getting a fix, no matter how much sattelits were in view...
It worked at first, but soon started to display '66666' instead of the location and finally, it would never display any location again.
I tried every tips and tricks and softs, it helped giving me more and more satellits in view and apparently active, but at the end my crappy GPS could never turn the datas received into a proper location...
2)
I sent my device back to warranty (after flashing back to official ROM and SPL) and had to wait for about a month.
(the technician at first tought I was just a noob unable to set his phone properly, but after two days of attempts, he had to admit that there was something wrong with my phone and sent it to the the headquarter for replacement of motherboard and so on.
3)
The new phone I got came directly with 1.93 ROM and a little bit more yellowish screen, though, there is no spot or stain on it. So the coulour doesnt bother me.
But from the beginning I noticed the new phone was much more responsive even at the slightest touch.
From the first try, the GPS got a fix in about 1 mn time, with only 3-4 satelits in view.
I installed Hard-SPL and the latest Australian Official ROM, and though the screen seems now a little less responsive than before, the GPS is still working, fine.
I'm a VERY happy user of Diamond now, but I'm still wondering one thing:
it looks like once the warranty technicians understood that I was very demanding about quality and complete functions, they took time but gave me a phone totally different in terms of behaviour and quality of the components sensitivity of screen, GPS etc.
Is there some bad production series that they never tells publicly about, and much more better series that they give you as a replacement once they understand you will bother them until the end of time if you are not satsified?
Plz tell your experience about having received two new diamonds with totally different behaviour and quality of the components.

I guess you are totally right!!!
My first device was pealing paint in the aluminium frame on the second day, work very good by the way.
Now i´m on the second device and i my hardware keys, especially the call button is sometimes irresponsive and i have to push it several times to enter the dial.
Tried cooked rooms as well, and the call button issue still remains, so i´m a little unhappy with my diamond experience.

I've noticed that whenever i turn on my display after having left the diamond unused for sometime the lcd doesn't switch on smoothly, what i mean is that it first displays a grey pattern(only for a ms or so) and then the desktop( lcd off>>grey flash>>desktop). Usually the transition from off to desktop is quite smooth, but in my case its not!
Is this a s/w issue or h/w ?

I've never experienced that particular problem myself, but sounds like H/W problem to me...

just been through a couple of other threads related to the grey screen of death...i've had it once...it happened while i ended a call, had to soft reset to resolve it.
take a look at the grey screen of death i'm talking about

Pretty scary indeed!
It might not be a coincidence that you experienced both: grey transition when switching on the screen and once, the grey screen of death after a call...
Two different effects of the same defective part in your H/W?

a solution!, almost
untill now i've had auto brightness control switched off and the brightness was set to minimum to save battery life, but now i just tried switching on auto adjust backlight and the problem seems to have vanished.....coming out of standby is smooth as ever!
although i've to say that i don't quite understand the logic behind it.
*EDIT*
it doesn't help for long

blufade said:
a solution!, almost
*EDIT*
it doesn't help for long
Click to expand...
Click to collapse
This is what I was worrying about...
Your method sounded like a work around to avoid the display failure. But as a matter of fact, there must be a reason for the display to fail. (bad screen, power supply or something...)
By the way, I'm more and more convinced about my assumption that there are bad production series and better ones:
Today I had my device connected to my PC through USB for a couple of hours. In the meantime, I was downloading and deleting messages, watching google video on opera, after that I used wifi etc.
In this situation, my first Diamond would have got hot like hell and my hand could barely stand the pain...
Since many people were complaining about over-heat problems, I thought that was a common problem with Diamond.
But the new one did not get that hot. Just a little over-warmed, but definitely not too hot. From that phenomenon, I can see what I felt about a better touch-flow behaviour, a better GPS and so on is a part of a whole:
I was first sold a ****ty phone, and now I finally got a proper Diamond!
People with bad series, you don't have to cope with all those troubles, ask for a replacement phone!

my diamond gets heated up quite a bit at times....but i dont fully uderstand what exactly is the cause.....i've had experiences with the diamond getting pretty hot while using wifi & or gps and on another occasion i was watching a DVDRIP via wifi(@ full power) using core player and also with gps cycle running in the backgroud, still the diamond stayed well within reasonable limits.
i think it has to be a software problem, possibly the radio s/w
would you mind sharing the radio version of your diamond?

As written in my signature, I'm using the 1.00.25 which is included in all latest official ROMs.
By the way, I hope you did not cast a spell on me! (just kidding)
Today I experienced my first grey screen!!!
My Diamond was connected to the PC through USB cable, downloading e-mails, and I got a phone call. When I hung the phone, It suddainly happened, for the first time in my Diamond user carreer!
Just for one second, looking like an old black and white TV screen trying to tune on channels.
Hope that was the first and last time. In ordinary calls, (without being synchronized to the PC at the same time, it never happened so far...

sorry to hear that my friend
My Diamond was connected to the PC through USB cable, downloading e-mails, and I got a phone call. When I hung the phone, It suddainly happened, for the first time in my Diamond user carreer!
Click to expand...
Click to collapse
I'd the same experience except for the fact that my diamond wasn't connected to a PC.
I hard reseted my diamond yesterday, but the grey splash while i turn on the display from standby(post 3) still exists ( ......i don't suppose its a software problem anymore.

blufade said:
i don't suppose its a software problem anymore.
Click to expand...
Click to collapse
Why not trying to send it back to the seller and get a new one?
This problem is easy to demonstrate to the technicians, and I don't think they will be cheeky enough to say that's a normal phenomenon!

This problem is easy to demonstrate to the technicians, and I don't think they will be cheeky enough to say that's a normal phenomenon!
Click to expand...
Click to collapse
not that easy.....the thing is that if we turn on & off the lcd without a gap of atleast 4-5 min(dono exactly) i dont see that grey splash
i think im going to wait another 3-4 months before i approach for warranty.

I had that "gray splash" problem with my Kaiser and Diamond.
Hard reset also didn't work like above. For both devices the fix was simply flashing to a different (cooked) ROM.

As mentioned in another thread, the grey screen problem was fixed (as least for me when I flashed to dutty's rom)

blufade said:
not that easy.....the thing is that if we turn on & off the lcd without a gap of atleast 4-5 min(dono exactly) i dont see that grey splash
i think im going to wait another 3-4 months before i approach for warranty.
Click to expand...
Click to collapse
You can stay there and wait for 5 more minutes in the shop while they are attending other customers, just to proove your point.
If they are honest, they will not deny the fact!
foxium said:
I had that "gray splash" problem with my Kaiser and Diamond.
Hard reset also didn't work like above. For both devices the fix was simply flashing to a different (cooked) ROM.
Click to expand...
Click to collapse
knave said:
As mentioned in another thread, the grey screen problem was fixed (as least for me when I flashed to dutty's rom)
Click to expand...
Click to collapse
There might be some tweaks in the cooked ROMs that avoid the problem, or it might be due to some bad flashing or defective hardware.
If not, how do you explain that I've never experienced this with my previous HTC phones (wizard, Trinity...) nor I experienced it with my Diamonds (the first one and the new one) with stock or cooked ROMs.
except for that very special time, when I received a call while downloading messages through Active Sync.

Xperia restarts automatically!

I am facing the problem recently last 2 3 days
my Xperia restarts automatically
sometimes there is 30% to 40% charging left still its shut automatically and never been start.. i have to change new battery
any solution for this or anyway to find the problem?
regards

anybudy would like to answer this please?

I'm having a similar problem...my x1 sometimes shuts down while in the middle of doing something, like opening apps, sliding out the keyboard or even navigating touchflo. I suspect it could be a battery problem, as someone in the forum discovered, having also shut down problems, that his battery is loose and the connectors are not properly met so he stuck a bit of hard paper to fix it, but I checked mine and the battery is not loose. I don't want to spend on a new battery if these shut downs weren't really cause by faulty batteries, so yeah anyone has a clearer understanding on this?

Hi all
I am also having a similar problem the past 2 days and as of now i cant use the qwerty keyboard because just as i begin to slide the qwerty out the screen goes black and the phone need to be rebooted.
I have just changed to Valkyrie 2.4 yesterday thinking that maybe its was software problem with Touch X but the problem still persists. Only difference is that with Touch X the phone would reboot itself.
Anyone else having any similar issues and what would the fix be, or shall i be off to my nearest service provider for repairs?
Thanks

Uhm.. about that problem when you slide it out and the device turns off.. i had that too and i send it in to repair.. it will probably be fixed under warranty, and stock rom or custom rom doesnt matter the problem was still there... and it happend to me 5 days ago..

knufh said:
I'm having a similar problem...my x1 sometimes shuts down while in the middle of doing something, like opening apps, sliding out the keyboard or even navigating touchflo. I suspect it could be a battery problem, as someone in the forum discovered, having also shut down problems, that his battery is loose and the connectors are not properly met so he stuck a bit of hard paper to fix it, but I checked mine and the battery is not loose. I don't want to spend on a new battery if these shut downs weren't really cause by faulty batteries, so yeah anyone has a clearer understanding on this?
Click to expand...
Click to collapse
'When i slide the thing out it sometimes restarts'
I used to have that with the stock ROM so this all might be more software related...

yeah I am having the same problem, No Water Damage btw. i found that if i sometimes in portrait mode if pressure is applied to the top right region, it will shutdown and/or restart. When I slide my screen up to landscape mode it screen is just black. I'm going to contact Sony Ericsson to see what they have to say about this.

SyntheticDistortion said:
'When i slide the thing out it sometimes restarts'
I used to have that with the stock ROM so this all might be more software related...
Click to expand...
Click to collapse
It resets when the phone freezes. Sometimes it freezes so bad you have to manual reset.

My phone is doing the same thing but when i slide it up. The screen goes blank and then it restarts by itself. I never flashed my phone so I thought it was a firmware issue. I finally updated to the R3A firmware and lo and behold the same results, but instead it didn't restart, it just turned off or the screen goes blank. I've sent the phone to Sony Ericsson and they told me that I would have my phone back in 7 to 10 business days, but they're liars!!! It's been 13 business days and counting and no word as to whether the phone can be fixed or updates on status other than it's in "work in process". So then I called again today and complained to SE and the result is that they are "awaiting parts and Xperia parts are on back-order". After further probing SE told me that they would call me on Monday to officially let me know what the hell is going and why it's taking so long to repair my phone. I paid $800 usd for the phone and I would expect that their repair service would be a lot better and quicker than what it is! During my wait time for my phone, my PS3 broke down, I sent it in, got it fixed and returned already. That was within a week. There is definitely something wrong I tell you! They just need to send me a new phone!
Sorry about my rant guys, but I'm pissed!!!

My damn phone has the same issue, Until now, this hasn't been repaired for it's crack. And I'm almost out of warranty days, I think I bought it 2md day after the xperia was released. I'll try testing abou the presuure point though. I give you update

I did have the same problem..
Hi... I did have the same problem n I couldn't find any solution... So i send it to repair...
U can check my threads..
http://forum.xda-developers.com/showthread.php?t=520143
n
http://forum.xda-developers.com/showthread.php?t=519322
mca
EDIT : It seems that is an XPERIA PROBLEM!!!! LOOK!!! : http://forum.xda-developers.com/showthread.php?t=550242 !!!!! , many people is having the SAME problem...
I'm disappointed..

Touch Screen has stopped working

Basically about 2 months ago I rooted the phone and put in cyangen mod, everything was fine until the touch screen stopped working. Most of the time it was brief but sometimes the touch screen just wouldn't work for a whole day and then start working again. Thinking I had done the root wrong I unrooted the phone back to it's orginal. However the problem still showed up despite that. I recently updated it to the donut update, and that's when the problem got worse. Now the touch screen won't work and when I go to the contacts using the trackball I get an error. And anytime i recieve a phone call I get the same error. Thinking it was a software problem and factory reset the phone and scaled it back to rc29. But still the touch screen doesn't work, and now because of that I am stuck on the setup screen at the beginning which ask you to touch the android to continue (which I can't). I have wiped and factory reset the g1 many times, and usually that has made the touch screen work again, but now it seems to not work at all. I deducted over the last couple of days that it must be the power adapter causing all of this. Since I got the touch screen working yesterday and had no problems the entire day. Then a hour after I put it on the charger the touch screen stopped working again and hasn't worked since. Is there anything that can be done at this point to fix it? I read somewhere about a script that makes the g1 touch screen work again but haven't been able to find it.

Same problem
I'm having a near identical problem. Most all of the symptoms are the same - except my touchscreen has only worked for a few seconds on one occasion after the initial failure. I've tried wiping, and about 3 different mods (JaCx, Cyan, Enomther). None have helped, and currently I'm stuck at the same point where it's asking me to touch the Android to begin, and I can't. The only difference is that I didn't unroot. So I'm going to try a few more roms, but I doubt I'll have any luck. My phone was also put on a charger that wasn't made for the g1. I began to notice the problem thereafter. Not sure why, but that certainly seems like the only reasonable variable which could be causing this.
Anyone out there have any ideas? It'd be much appreciated.

Have you guys dropped your phone recently? I'd like to share my story as well. Two weeks ago, I dropped the phone on hard tile while it was still in its leather/suade case. I picked it up and instantly found the touch capabilities were gone (with screen open or closed). After many soft resets and not knowing how else to fix it, I also decided to revert back to rc29 from cyanogenmod. Still no go, after being stuck at the setup screen. I disassembled the phone, using the G1 service manual, to make sure none of the ribbons were knocked loose and examined the lcd and digitizer for any cracks. No problems that I could see. Disassembled, and reassembled the phone a few more times and still with no avail.
If you were one of the first to receive a g1, such as myself, oct 22nd is the last day of your 1 yr warranty. So give t-mobile a call, and submit a claim before then if you want to take advantage of it. Make sure you reflash to stock image, and that there are no signs of visible damage on the phone or else the warranty will be void. Good luck.
Edit: If your phone's touch screen is working at random times, I'm suspecting its a hardware problem, most likely a damaged or worn out flex cable from opening and closing the screen. Try slowly opening the screen and touching the screen at the same time to see if anything happens.

When I was waiting for my G1 I came on this forum (Had a Diamond before so knew about it anyway) and found a topic discussing problems like this... If you have an Early G1 then I'm guessing this is the problem...
There is some sort of design flaw with the ribbon cable connecting the Touch Screen to the Mainboard catching onto the sliding mechanism. This eventually destroys the cable and causes the touchscreen to stop working. On Later models they've fixed it by taping the ribbon cable down instead of letting it hang loose.
In short... you need to unroot your phone and take it back to T-Mobile.

Interesting thoughts, thanks for the input. My G1 has never been dropped, and is actually relatively new, only a couple months old. But it's not on T-Mobile. I flashed MLIGN 2.5.7 (Hero). I did this b/c I know it bypasses the typical "touch here" activation BS. So I can boot, and get into the OS just fine. Which is where I'm at now.
Here's what I've done. I completely wiped my Fat32, Ext2, and Linux_Swamp partitions using Gparted. I completely wiped the phone using Cyan 1.4 Recovery. Yet no matter which Mod I use my touch screen doesn't cooperate, AND (no matter which mod I'm using) when I try to launch basic apps (dialer/phone, some settings menus, etc) I am notified that, "android.process.acore" has stopped. Without fail. It ALWAYS does this when attempting to access the dialer/phone. I would be more than happy to take some time troubleshooting the touch screen IF my damn dailer/phone would work. But it does not.
I read on some other forums about there being 2 compcache files for someone who had a similar issue. That's slightly above my head, though, and I'm not quite sure how to go about checking that and/or deleting one. Really, I just want to be able to access my dialer/phone app for the time being. Then I can take some time to trouble shoot the touch screen.
Anyone have any ideas about the process failing, or the compcache affect?
Also, I'm using 1.33.2005 SPL.
Thanks

gat0rjay said:
Interesting thoughts, thanks for the input. My G1 has never been dropped, and is actually relatively new, only a couple months old. But it's not on T-Mobile. I flashed MLIGN 2.5.7 (Hero). I did this b/c I know it bypasses the typical "touch here" activation BS. So I can boot, and get into the OS just fine. Which is where I'm at now.
Here's what I've done. I completely wiped my Fat32, Ext2, and Linux_Swamp partitions using Gparted. I completely wiped the phone using Cyan 1.4 Recovery. Yet no matter which Mod I use my touch screen doesn't cooperate, AND (no matter which mod I'm using) when I try to launch basic apps (dialer/phone, some settings menus, etc) I am notified that, "android.process.acore" has stopped. Without fail. It ALWAYS does this when attempting to access the dialer/phone. I would be more than happy to take some time troubleshooting the touch screen IF my damn dailer/phone would work. But it does not.
I read on some other forums about there being 2 compcache files for someone who had a similar issue. That's slightly above my head, though, and I'm not quite sure how to go about checking that and/or deleting one. Really, I just want to be able to access my dialer/phone app for the time being. Then I can take some time to trouble shoot the touch screen.
Anyone have any ideas about the process failing, or the compcache affect?
Also, I'm using 1.33.2005 SPL.
Thanks
Click to expand...
Click to collapse
I realize this is an old thread but did you ever get the issue figured out? My phone did this just last night

Alright as suggested earlier in the thread it was a hardware issue. I found that my touchscreen had become unplugged and was causing the errors.

Sorry to bring this guy back from the dead but I figured I would educate a few people one a common touch-screen problem.
Yeah, 90% of the time it's the adapter you're using. Being a G1 owner with lots of mini-USB chargers i found the same problem. Also being a tech rep at t-mobile, i've had lots of calls revolving around this and fixing it.
The G1 uses a 1000mA charger (1A). For me, the touch-screen going haywire/unresponsive seemed to get more severe as the the chargers specs went lower. An old Motorola charger at 500mA was ridiculous. Talking to customers with the exact symptoms and hardware, eventually lost all functionality of the touch screen.
On a side note, it's not just the G1 that has problems with the wrong charger. A linksys router I have has a standard power port connection type in the back but requires a bigger amp adapter. hooking the wrong one up will cause complete failure. In many situations, not enough energy is just as detrimental as too much energy. One last example: Take a big 10" sub driver, hook it up to a crappy 300W amp, you get an overheated coil and eventually a busted driver.
So, lesson is, just because it fits doesn't mean it's safe to use. I never mix and match adapters with any device ever because of the risk of damage.