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Three Times the Charm with Nexus S?

Hello everyone:
I don't set my expectations too high. I know that this is a new phone, and it is not without it's bugs, but it is an awesome phone and from reading others who were having issues, I wanted to get a Nexus S working right for me!
I purchased my first Nexus S at a local Best Buy.
Everything about the phone was fine, the battery life seemed good, it ran quickly, did not notice any lag or any other major problems. However, I did begin to notice the back-button being unresponsive, as many others have stated experiencing. From reading threads on XDA, the jury is still out on whether this is a software or hardware issue, but that some people were able to get a phone without the issue by returning it for a replacement.
So I did...
I exchanged for my second Nexus S at a local Best Buy.
This one was kind of odd. Took a little while the for the 'important system updates' notice to come up, so I had already synced with my gmail and had also manually updated google maps and a few other apps.
When I finally did install the system update and the phone booted, I got a systemcore process FC error off the bat. Not good news. Later on, all seemed well, but I noticed a lot of lag with using the GB keyboard (unresponsive at times), and also having difficulty with the end-call button to end a call in progress (again, unresponsive so I had to press it a bunch of times before it would respond). Also, the battery life did not seem to be nearly as good as the first Nexus S.
So... I turned it back to Best Buy, but they did not have another replacement. So I turned it in for a refund.
I called Best Buy toll-free number, told them about the trouble that I was having, and they waived the overnight shipping fee, took my order for a new Nexus S, and I got it via UPS the next day (just at the 24 hour mark)
With this phone, I booted the phone and chose skip to login/create a gmail account. Phone loaded up completely, and I was just signing into my gmail account when I got the 'important system updates' message.
I updated immediately. Everything went smoothly.
I have not noticed any problems so far. The phone runs smoothly. It had no FC upon first boot after the system update. The back button works as it should. I don't notice any lag with the keyboard. I pulled up engadget.com full site and did not notice any lag out of the norm, apart from it being slow to load as I'm working with the crappy Edge network here (who cares if there are 4G phones out when my area doesn't even have 3G yet and that is where I am mostly). I have also tested the ringtones. I moved some music to my SD Card. I downloaded/installed Ringdroid. I created a ringtone. I set the ringtone. I have rebooted my phone three times and my ringtone still works. I mounted and unmounted my SD card (even moved some files to it), and I still have my ringtone.
So, what was it? Was it three times the charm? Was it there was a bad batch at the local Best Buy? Was it that because of the volume of Best Buy over phone and online sales, you'll get a newer and better Nexus S going through that route? Was it because I installed the system update before doing anything else, including syncing my gmail? I'm not sure...
But I do know that I love this phone, and *knock on wood* it continues to work the way that it should, I'll be happy with it for a long time to come.
My advice for those who are experiencing the issues that I had with my first two Nexus S to try try again. I know it's disappointing that a customer would have to do that in the first place as it is time consuming and stressful, but in the end, there might be a happy ending with you and your Nexus S.

Glad everything is working out for ya. Luckily my first nexus s has been great from day one.
Sent from my Nexus S using Tapatalk

I have my second phone and it feels like the screen is less sensitive as on my first one. Unfortunately I cannot say if this is a problem with 2.3.1 because my first phone never got the 2.3.1 update and got stuck with 2.3. I have the feeling that 2.3 was much faster and less laggy than 2.3.1. I probably will return the phone again to see if this is a phone problem or if this was introduced with 2.3.1.

Does your front camera worK?

cyc1120 said:
Does your front camera worK?
Click to expand...
Click to collapse
Yours does not?

cyc1120 said:
Does your front camera worK?
Click to expand...
Click to collapse
Just took a picture... it works. But I haven't tried video calling with Tango yet
Sent from my Nexus S using XDA App

Camera works but weird thing is it does not allow zoom...it does work on tango though....
Sent from my Nexus S using XDA App

ankit.subs said:
Camera works but weird thing is it does not allow zoom...it does work on tango though....
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
There is no zoom yet for gingerbread stock camera app.

mr mystery said:
Yours does not?
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Click to collapse
it force closes if i use it in the default app.
it's just black if I use it in Tango.
I'm from Canada and bought the phone off someone from craigslist

Launcherpro & Thunderbolt compatibility issues

I am not too sure if anyone has come across the same issue as I have but I wanted to share this with everyone.
Basically I had noticed that I was having major issues w/my contacts loading up when initiating my dialer and most of my widgets were not loading up, and last but not least a lot of my apps continuously force closed through out the day.
Long story short... if you're having these issues I suggest you uninstall Launcherpro. I actually was utilizing Launcherpro plus but apparently, Launcherpro has been the root of the problem for most of these issues and also was a major part as to why my battery would not stay at full charge for long. And to my surprise I was actually able to confirm with a tier 2 tech support rep...
Once I uninstalled it I was able to use my phone flawlessly again.
AGAIN... I'm sorry if this has already been mentioned previously but I was going insane thinking that I had a defective phone, so for anyone that is having these issues please know that Launcherpro apparently is not compatible quite yet to the TBolt.

I haven't had a issues with LP on my Tbolt, and to be honest I feel like my battery has actually improved since I installed it.

All phoes react different. When I got my tbolt I was having issues with my sms. This was like 3 hours after I got the phone. So I did a factory reset on my device and no problems whatsoever. (Knock on wood) hope this helps.

magicriggs said:
All phoes react different. When I got my tbolt I was having issues with my sms. This was like 3 hours after I got the phone. So I did a factory reset on my device and no problems whatsoever. (Knock on wood) hope this helps.
Click to expand...
Click to collapse
i cant get lpp to show my sms notification count in the dock, so i switched to go launcher...

...

+1 launcher pro rocks

I was wondering why my contact would take forever to load up when I wanted to make a phone call lol. Works fine now that I uninstalled Launcherpro. Thanks!

The dialer contacts problem was solved in another thread. All you have to do is change the dock shortcut to something else and then change it back to the dialer, works perfectly fine now. I've been using LPP since day1 and haven't had any of the other issues you're having so I'm not sure what's going on there.

ikon8 said:
The dialer contacts problem was solved in another thread. All you have to do is change the dock shortcut to something else and then change it back to the dialer, works perfectly fine now. I've been using LPP since day1 and haven't had any of the other issues you're having so I'm not sure what's going on there.
Click to expand...
Click to collapse
I guess I missed that thread lol. Back to normal now

My LPP is fine.

Wow really thanks so much for the feedback guys. I thought I was going crazy.
Sent from my ADR6400L using Tapatalk

[Q] Thunderbolt Sluggish, laggy, and I got it to reset during tether

Just got my thunderbolt a few days ago. I haven't had the chance to root just yet. Too many days at work.
I had a bad problem with resetting on my EVO... I'd like to make sure this doesn't turn into round 2.
Its been sluggish on and off all day. Lagging through my texts messages while I am tethered to my laptop on LTE. It reset on me eariler while I was tethered. Did I overheat this thing?
Any input? Or where to look/start troubleshooting I would greatly appreciate it.
Thanks!

Sounds weird. I haven't had any problems with mine.
Maybe a defective device? I have no idea.

cypherx82 said:
Sounds weird. I haven't had any problems with mine.
Maybe a defective device? I have no idea.
Click to expand...
Click to collapse
Hmm another odd thing it does, is during a phone call the top part of the screen around the status bar kind of gets a greenish tint during the phone call if the person I am talking to doesn't have a picture. Is that the updated sense doing that? My Evo never did it. I'm gonna try and stress it again... I couldn't get it to swype properly, it would end the word before the I finished swyping it.
I hope I don't have a defective device

trueplaya89 said:
Hmm another odd thing it does, is during a phone call the top part of the screen around the status bar kind of gets a greenish tint during the phone call if the person I am talking to doesn't have a picture. Is that the updated sense doing that? My Evo never did it. I'm gonna try and stress it again... I couldn't get it to swype properly, it would end the word before the I finished swyping it.
I hope I don't have a defective device
Click to expand...
Click to collapse
The green tint is normal
Sent from my ADR6400L using XDA Premium App

trueplaya89 said:
Hmm another odd thing it does, is during a phone call the top part of the screen around the status bar kind of gets a greenish tint during the phone call if the person I am talking to doesn't have a picture. Is that the updated sense doing that? My Evo never did it. I'm gonna try and stress it again... I couldn't get it to swype properly, it would end the word before the I finished swyping it.
I hope I don't have a defective device
Click to expand...
Click to collapse
Yeah, the green tint is normal, but I don't know about the rest.
Maybe you might wanna take a trip to Verizon and ask them.

cypherx82 said:
Yeah, the green tint is normal, but I don't know about the rest.
Maybe you might wanna take a trip to Verizon and ask them.
Click to expand...
Click to collapse
Might have to. Kinda wish I would have bought instore now. I'd imagine that would make potential swapping much easier!

This phone is awesome. I personally dont like waiting for devs to finish ROm/Kernals so i will be trying to bulid my own. Verizon / HTC have so many bloated items in this phone its unreal. Just debloating the phone makes it run faster via quadrant, overclocking it to around 1.4 to 1.5 is the most economical and i beleive most are able to do it with the required stock voltage (minues a little) and i get about 2200 on my 1.4ghz Senseless Virus ROM. Anyhow. The only thingthat gets to me is the lack of installed apps. Otherwise its freaking fast.

me and 9 other co-workers all got the thunderbolt the day it came out. two of us had horrific battery life and some lagging issues as well. i just wiped data and cache and seemed to fix it right up. you can give that a go or just root it and play around with all the kernels!!!!!!!! lol i can't go more than a few hours without flashing a new kernel...so addicting!!!!

Even before I rooted and debloated mine I never had even the slightest lag. I would recommend trying to get it exchanged. It shouldn't lag at all unless you have some kind of huge app constantly sucking CPU and RAM in the background.
Sent from my ADR6400L using XDA App

JBO1018 said:
Even before I rooted and debloated mine I never had even the slightest lag. I would recommend trying to get it exchanged. It shouldn't lag at all unless you have some kind of huge app constantly sucking CPU and RAM in the background.
Sent from my ADR6400L using XDA App
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Click to collapse
Yea, I am getting force closes in the stock default text message app. Only apps I have installed are dolphin browser mini, swype, tweetdeck.
While in my 4g area yesterday during tether I had a few periods where the 4g would connect on and off for a few minutes before it solidified itself..
Do I have a dud? Or should I root it and see if these problems continue? Since I bought it from Letstalk.com, Would they even let me exchange it at a Verizon store?

Sounds like a dud. Just take a trip to Verizon and see what try can do.
Sent from my ADR6400L

How many of us are getting reboots

I know theres a poll on issues etc and rebooting is mentioned, but I feel it was too early to poll and people could have voted and had a reboot after...
So question is..... has your phone rebooted? Or just fine?
Also if you could mention how long you had it that would be great....
I just want to know exactly who is having reboots and who hasn't..

Not once on its own.
Sent from my LG-P999 using XDA Premium App

None so far.

None so far.

Zero.
Sent from my LG-P999 using XDA App

LOTS of reboots
I have had about 20 in two weeks. I am CURRENTLY getting CONTINUOUS reboots.
It had the LG logo and thinking bar, underneath it said "System checking". Now it has rebooted non-stop (6 times so far as I'm typing).
New phone should arrive on my doorstep within the next hour or so... fingers crossed.

once that I know of. No idea why. It just rebooted while on my desk idle.

In the one week I had the phone (preroot), never. Even after rooting it, never.

Haven't had any issues with mine.

Had 3 reboots in 5 days on my old phone. Nothing yet on new one so far. It has been 3 days. I noticed my old phone was alot hotter than this one. Possibly a hardware issue after all.

Guys, try to turn off gps, I did that and I have 0 reboot and 0 shut down today, I had a lot of reboots and phone turning off by itself before that. I'll see what happens when I charge it tonight and I'll let u guys know.
Sent from my LG-P999 using XDA App

Theres got to be something thats causing it.
results don't look so good..

Hmmm prerooted I had maybe one and some freezing and lag..
rooted no reboots except running eaglesblood rom and experimental kernel with pauls lag apparentky too much going on there. .

If your phone is rebooting constantly don't even waste your time return it for a new unit. The att galaxy s had the same prob and everyone waited for a fix only to find out it was hardware related....if your in the 14 day window don't even waste your time and end up with a refurb
Sent from my LG-P999 using XDA App

I bought my g2x a day after launch. For a few days, I didn't experience any reboots. After that they starting happening but not too often. Eventually (by yesterday), it was happening more often. Somewhere in that time frame I did a factory reset to try to improve battery life.
I called tmobile support yesterday and they made do another factory reset and not install any apps. It has been 16 hours without a reboot but that doesn't prove anything, really. First, it doesn't necessarily happen every day. Second, without any non-default apps installed, it may not be taxing the device enough. Third, even if it is an app's fault, it may not be directly the apps fault. Am I supposed to run no apps if that turns out to be the problem?
They will be calling back at three and I'm going to try to push them for a replacement. I'm also having reception issues and the battery could certainly last longer.

None here, gps is not turned off
Sent from my LG-P999 using XDA Premium App

I am on my 5th G2X... with a build date of 4/3/2011 and I have not had a reboot as of yet with GPS turned on. This has also been the best phone out of all those 5, I have a week left and if I experience problems I will be taking it back. As somoene said dont waste your time your better off returning it then waiting for a fix.

Berat said:
I am on my 5th G2X... with a build date of 4/3/2011 and I have not had a reboot as of yet with GPS turned on. This has also been the best phone out of all those 5, I have a week left and if I experience problems I will be taking it back. As somoene said dont waste your time your better off returning it then waiting for a fix.
Click to expand...
Click to collapse
Any advice on what to tell them so they'll take it back? The tmobile phone tech wants me to prove that it isn't an app...

none so far got it on May 3rd..

oldbustedjorn said:
Any advice on what to tell them so they'll take it back? The tmobile phone tech wants me to prove that it isn't an app...
Click to expand...
Click to collapse
I just took it to the store, told them the problems I was having mentioned the reboots, screen bleed, and data connection issues. Told them I was within the 14days and that Customer Care told me to come to the store and try and get a working phone. I wouldnt talk about the reboots as it may not happen in store if you have screen bleed its easier that way cause you can prove that.
Did you buy it in store, online or over the phone?

[Q] Problem with Samsung phone performance

Been contemplating for a while whether to post this as it will come off as rather trollish. Had my Infuse for over a year now. When I first got it I noticed there were some "issues". I remained patient hoping or thinking maybe when GB was released it would improve. It did not. Later I needed to root this phone and came here, found a ROM that had all the AT&T junk stripped out. Phone worked better, but still had these issues.
I got to the point that I knew I would never again purchase either a Samsung phone or Android. Did not know what the culprit was. Just recently I had the chance to really take a look at an HTC EVO, and I realized that Samsung is the problem, not Android.
Number one issue is that this phone is sluggish, and sometimes unresponsive. I will touch whatever button and get that vibrating acknowledgement, but nothing happens. I will be in the app menu and wish to exist and the home button just does not respond.
Yesterday I missed a call because the bloody phone just did not respond, even though I touched the answer button. Other times I just can not make a call. I dial number, and the phone just sits there doing nothing. Eventually I just pull out the battery and restart the phone to make a simple bloody call. I had a HTC WinMo phone for years and never once experienced this. No matter how farked the OS could get with some app or whatever, the phone function always worked.
I do not run a lot of apps, and recently have experienced these issues with almost literally no apps installed. I will then add something like GO taskmanger just to confirm that the unresponsive behavior is not due to some app taking up memory/CPU etc..
Sorry for the long post, but I am at my wits end with this bloody phone. The fact that I miss calls when the **** phone is right in my hand is unacceptable. So before placing this phone in a box filled with C4 and shooting this to the moon, hoping that maybe a solution is out there.
p.s. I have 2 Infuse in use, both have the same issue.

What firmware are you running?
Is it the same firmware on both phones?
What is the launcher?
Have you tried a different modem?
Are you using a battery saver like juice defender?
Are you using an ad blocker?
Are you using a specific kernel? Oc? Uv?
Need for specific info

ssa2204 said:
Been contemplating for a while whether to post this as it will come off as rather trollish. Had my Infuse for over a year now. When I first got it I noticed there were some "issues". I remained patient hoping or thinking maybe when GB was released it would improve. It did not. Later I needed to root this phone and came here, found a ROM that had all the AT&T junk stripped out. Phone worked better, but still had these issues.
I got to the point that I knew I would never again purchase either a Samsung phone or Android. Did not know what the culprit was. Just recently I had the chance to really take a look at an HTC EVO, and I realized that Samsung is the problem, not Android.
Number one issue is that this phone is sluggish, and sometimes unresponsive. I will touch whatever button and get that vibrating acknowledgement, but nothing happens. I will be in the app menu and wish to exist and the home button just does not respond.
Yesterday I missed a call because the bloody phone just did not respond, even though I touched the answer button. Other times I just can not make a call. I dial number, and the phone just sits there doing nothing. Eventually I just pull out the battery and restart the phone to make a simple bloody call. I had a HTC WinMo phone for years and never once experienced this. No matter how farked the OS could get with some app or whatever, the phone function always worked.
I do not run a lot of apps, and recently have experienced these issues with almost literally no apps installed. I will then add something like GO taskmanger just to confirm that the unresponsive behavior is not due to some app taking up memory/CPU etc..
Sorry for the long post, but I am at my wits end with this bloody phone. The fact that I miss calls when the **** phone is right in my hand is unacceptable. So before placing this phone in a box filled with C4 and shooting this to the moon, hoping that maybe a solution is out there.
p.s. I have 2 Infuse in use, both have the same issue.
Click to expand...
Click to collapse
You know, for the rather lengthy post, you really have not explained any detail about your issue.. You have a generic 'I have an issue, the Infuse sucks' post and its not going to help anyone resolve your issue. I find it EXTREMELY hard to believe that you have 2 infuses having the SAME EXACT ISSUE. Yes, there will be times when you get a defective phone or it isnt working up to your standards, but to have 2 defective phones with the same defect? You need to play the lottery. Also, i suggest you send the phones back. It sounds like youve already made your mind up and have pretty much bashed the samsung infuse in that entire post. The same samsung infuse that myself, and plenty of other people live with day to day and have absolutely 0 complaints.

I will give you $20.00 a piece for them!!!!

ssa2204 said:
Been contemplating for a while whether to post this as it will come off as rather trollish. Had my Infuse for over a year now. When I first got it I noticed there were some "issues". I remained patient hoping or thinking maybe when GB was released it would improve. It did not. Later I needed to root this phone and came here, found a ROM that had all the AT&T junk stripped out. Phone worked better, but still had these issues.
I got to the point that I knew I would never again purchase either a Samsung phone or Android. Did not know what the culprit was. Just recently I had the chance to really take a look at an HTC EVO, and I realized that Samsung is the problem, not Android.
Number one issue is that this phone is sluggish, and sometimes unresponsive. I will touch whatever button and get that vibrating acknowledgement, but nothing happens. I will be in the app menu and wish to exist and the home button just does not respond.
Yesterday I missed a call because the bloody phone just did not respond, even though I touched the answer button. Other times I just can not make a call. I dial number, and the phone just sits there doing nothing. Eventually I just pull out the battery and restart the phone to make a simple bloody call. I had a HTC WinMo phone for years and never once experienced this. No matter how farked the OS could get with some app or whatever, the phone function always worked.
I do not run a lot of apps, and recently have experienced these issues with almost literally no apps installed. I will then add something like GO taskmanger just to confirm that the unresponsive behavior is not due to some app taking up memory/CPU etc..
Sorry for the long post, but I am at my wits end with this bloody phone. The fact that I miss calls when the **** phone is right in my hand is unacceptable. So before placing this phone in a box filled with C4 and shooting this to the moon, hoping that maybe a solution is out there.
p.s. I have 2 Infuse in use, both have the same issue.
Click to expand...
Click to collapse
Simple . Hack it and put cm7 on it if you really need speed. Maybe its your screen protecter. Wipe the screen off. Cm9 can be sluggish, for speed go to miui on gingerbread or cm7

Id be willing to buy one of the infuses
Trust me...sounds like you got two defective units...which like Scott, I find hard to believe...but hey its possible-idk when you got hem.but if it hasn't been a year then put them back to stock with gtgs unbrick and file a warranty claim with Samsung...the infuse is a great phone and I never had the problem you described...I do have a question though...did you get them both at the same time? Cause I don't see why you would get a second if your first was having problems
Anyways...if you wanna sell one hmu...I may buy one depending on the price and if I can get the money (I think I already may have one lined up for $170 just need to get the money)
Sent from my HTC PH39100 using xda app-developers app

Never really had any problems with samsungs beside the only issue I have ever had with ALL Samsung phones .. They have the worst RF signal/strength out of any company! I miss the days of my old Nokia RF ..
Sent from my SAMSUNG-SGH-I997 using xda app-developers app

Android Law #1: Costum ROMs are ALWAYS 10x better than stock.

Wow an i cant find one issue. Always great signal never inresponsive u sure u have an infuse
Sent from my SGH-I997 using xda premium

Prometh1216 said:
Wow an i cant find one issue. Always great signal never inresponsive u sure u have an infuse
Sent from my SGH-I997 using xda premium
Click to expand...
Click to collapse
Hehehe, what ROM u running?
Sent from my SAMSUNG-SGH-I997 using xda premium

qkster said:
What firmware are you running?
Click to expand...
Click to collapse
One is using the GB posted by jscott30 here, the other is the plain official Samsung GB via Kies. Mine is then UCLB3
qkster said:
Is it the same firmware on both phones?
Click to expand...
Click to collapse
No
qkster said:
What is the launcher?
Click to expand...
Click to collapse
Both stock
qkster said:
Have you tried a different modem?
Click to expand...
Click to collapse
No, thought never occurred to me that I should look at this as a solution.
qkster said:
Are you using a battery saver like juice defender?
Click to expand...
Click to collapse
Neither.
qkster said:
Are you using an ad blocker?
Click to expand...
Click to collapse
Nope
qkster said:
Are you using a specific kernel? Oc? Uv?
Click to expand...
Click to collapse
2.6.35.7-I997RUXK53-CL366622 for mine (GB rooted ROM) the other would be whatever came with the official Samsung GB release.
qkster said:
Need for specific info
Click to expand...
Click to collapse
Again this has been a recurring problem since purchase, and during this time I have had stock Froyo, rooted Froyo ROM, GB update, and for one now a the GB rooted ROM.
When the slow to unresponsiveness occurs there does not appear to be any specific cause. Prior to updating to the rooted GB I had used GO Taskmanager, and long before that some other app I long since forgot the name of. Point was that they had shown that neither CPU was excessive, or memory was used up. Both phones have data services disabled and are strictly Wifi only. There are no tasks or extra programs run in the background (though did install Connectbot today). I no longer use any Live wallpaper. After updating to the rooted GB I left the phone in that state (no software installed) for a week or so, and the problem still occured.
This occurs when calling or answering calls, but as previously posted occurs sometimes just opening the Applications menu as an example. So it is not a specific task or program that is slow or unresponsive. Earlier this evening I got a call, slide the bar across to answer and the screen just hung there for a few moments. This time it was at least not long enough that I missed the call. When the call was done I looked and there simply was nothing running on the phone. No apps, no web browser or mail, in fact I was not even connected to the wifi (I have data 3G/4G service disabled on the phone).

are you completely wiping before every flash youve done? have you tried a complete wipe and start from fresh?

ssa2204 said:
One is using the GB posted by jscott30 here, the other is the plain official Samsung GB via Kies. Mine is then UCLB3
No
Both stock
No, thought never occurred to me that I should look at this as a solution.
Neither.
Nope
2.6.35.7-I997RUXK53-CL366622 for mine (GB rooted ROM) the other would be whatever came with the official Samsung GB release.
Again this has been a recurring problem since purchase, and during this time I have had stock Froyo, rooted Froyo ROM, GB update, and for one now a the GB rooted ROM.
When the slow to unresponsiveness occurs there does not appear to be any specific cause. Prior to updating to the rooted GB I had used GO Taskmanager, and long before that some other app I long since forgot the name of. Point was that they had shown that neither CPU was excessive, or memory was used up. Both phones have data services disabled and are strictly Wifi only. There are no tasks or extra programs run in the background (though did install Connectbot today). I no longer use any Live wallpaper. After updating to the rooted GB I left the phone in that state (no software installed) for a week or so, and the problem still occured.
This occurs when calling or answering calls, but as previously posted occurs sometimes just opening the Applications menu as an example. So it is not a specific task or program that is slow or unresponsive. Earlier this evening I got a call, slide the bar across to answer and the screen just hung there for a few moments. This time it was at least not long enough that I missed the call. When the call was done I looked and there simply was nothing running on the phone. No apps, no web browser or mail, in fact I was not even connected to the wifi (I have data 3G/4G service disabled on the phone).
Click to expand...
Click to collapse
Task manager is NOT the best app to tell you what is running in the background.
Maps and other location apps may not be listed but will consume resourse that can be the cause of your lag.
The fact that stopping wallpaper or live wall paper off alleviate the condition may suggest that the phone is running at max capacity. Steps to reduce the load improves it. Live wp, facebook, maps, stock email and other device manager from stock att was one of the first @#$% I took out on any rom I run.
Having a large amount of apps installed can also cause this lag. The OS may only be able to handle so many.
Have a poor signal at the time of the call may also be an issue, especially if both of your phones have this issue occasionally but not consistently.
Lock screen can also be a factor. Some sleep setting may also cause the phone to wake up poorly. I get around this by turning off my lock screen. On the call settings, you can also change the answering options so that it will override others and make it easy to answer.
On any firmware - stock or modded, after you have the phone running for an extended period of time without a reboot, you may start to see some lags. This may be across all devices. You may need to reboot it occasionally or boot into recovery and wipe the cache.
These issues may or not go away once you have a device with more power or resources..ex: dual or quad core, 1gb or 2gb ram etc..my guess is when a device has more power, programmers will come up with more resourse intensive apps that may hinder the phone as well.
Lastly, pay attention to your battery meter. As the power dips below 30%, there are steps taken by the OS to conserve the battery. This may give you lags as well..possibly one of the reason why it seems random also.
If you wanted to test out the lag issue due to background apps, go to settings/account and sync. turn off background data. You will retain the (radio) phone and text but there will be no email/facebook, weather, widgets/market/amazon etc updates unless you manually update them. If this runs smoothly but lags when you turn it back on, you can start the process of narrowing down your culprit.
gl