Develop Bugs

Picked up another evo has version 2.2 preinstalled

Hey guys I picked up another htc evo and it has version 2.2 installed . what are my options.
Ive rooted a few evos and other methods are not working.
is there any info yet.
sorry as i was told sorry for posting in wrong thread. I just assumed the info would be in this section isntead of looking around. Wont happen again.

nyinstaller said:
Hey guys I picked up another htc evo and it has version 2.2 installed . what are my options.
Ive rooted a few evos and other methods are not working.
is there any info yet.
Click to expand...
Click to collapse
No options yet. BTW, this belongs in the Q&A forum. If you had looked there, you would've seen the sticky thread at the top which says there is no way to root 2.2 yet.
Sent from my HummerPhone using the XDA App

Dont think so.. Please search theres about a billion other threads
Sent from my PC36100 using XDA App

Options-
You have two options.
Wait for a developer to gain root on 2.2.
or
Figure out how to do it yourself then come back and post in the "EVO 4G Android Development" section and post away.

I think one person was enough to get the message across. Smh
Sent from my PC36100 using Tapatalk

I was in Radio Shack where I got my phone and the manager told me that none of her EVO's had been shipped with 2.2 yet. This was just 2 days ago also.

Picked up two at the sprint store yesterday and they both had 2.2 pre installed.
Sent from my HTC Evo 4g

I had a new one from RS about 2 weeks ago and it did NOT have 2.2 but manager tried to install it, I said HELL No!! Sent it back due to hardware issue. This time I went through Sprint CSR and the rep said he is sending me a brand new one. HE him self said, "dont do the 2.2 upgrade, it kills your battery." I hope it comes with 2.1

Im getting mine delivered today from an insurance claim i had made thru asurion the insurance company and they were out of stock on them for about 5-7 days and they finally got one and its being delierved today, I have my fingers crossed that it does not have 2.2 preinstalled!!!!!!

BAttitude7689 said:
Im getting mine delivered today from an insurance claim i had made thru asurion the insurance company and they were out of stock on them for about 5-7 days and they finally got one and its being delierved today, I have my fingers crossed that it does not have 2.2 preinstalled!!!!!!
Click to expand...
Click to collapse
My asurian replacement i received today did have 2.2 installed.

xavier1022 said:
HE him self said, "dont do the 2.2 upgrade, it kills your battery."
Click to expand...
Click to collapse
Then you talked to an idiot. If anything, 2.2 will improve battery life, but only if you use reasonable options, and even then the difference (either way) won't be dramatic.

superx337 said:
My asurian replacement i received today did have 2.2 installed.
Click to expand...
Click to collapse
I'm sure at Asurion's refurb depots they flash the newest version, its just what they do. That being said, at MY Sprint office, we have never had a NEW EVO come in with 2.2 pre-installed.

Yea I was one of the lucky ones that assurion sent me an evo with 2.2 preinstalled, is there ANY WAY that even sprint could downgrade 2.2 to 2.1
Sent from my PC36100 using XDA App

Ive been on the phone with Sprint technical support multiple times and their answer is no, they can not revert the phone to 2.1. I also went and talked to the repair guys at my local Sprint store and they also said there is no way for them to revert. I have decided I will be patient and wait for the Devs to root 2.2, I am confident they will do it soon.

SilverZero said:
Then you talked to an idiot. If anything, 2.2 will improve battery life, but only if you use reasonable options, and even then the difference (either way) won't be dramatic.
Click to expand...
Click to collapse
From what I've read, the stock HTC Froyo kernel is terrible for battery life. Worse than the stock 2.1 kernel. The custom Froyo kernels significantly improve battery life. I have no actual experience with Stock Froyo though.
Sent from my FROYO'D EVO using xda app

[Q] EVO common probs and whatnot?

Whats going on dudes i been in the heroc forum since launch and finally decided to let her go. I know im a tad bit late but I got my evo over xmas and just had some questions that I thought id ask before I even attempt to root; i have 30 days to return it. I done some searching and came across a few threads of common probs so im gaining some knowledge. What does this so called "light leakage" look like and what should I look for. I also saw something about some peoples phones not holding 4g; how long should It hold 4g before it drops? I did see some users mention hardware version; mine says 0004. Sorry if im asking to much i just dont want to get really settled in and start noticing problems and i have to take it back. So what should i really be looking for to make the call to take this sucker back before 30 days is up. Thanks in advance

dirkyd3rk said:
Whats going on dudes i been in the heroc forum since launch and finally decided to let her go. I know im a tad bit late but I got my evo over xmas and just had some questions that I thought id ask before I even attempt to root; i have 30 days to return it. I done some searching and came across a few threads of common probs so im gaining some knowledge. What does this so called "light leakage" look like and what should I look for. I also saw something about some peoples phones not holding 4g; how long should It hold 4g before it drops? I did see some users mention hardware version; mine says 0004. Sorry if im asking to much i just dont want to get really settled in and start noticing problems and i have to take it back. So what should i really be looking for to make the call to take this sucker back before 30 days is up. Thanks in advance
Click to expand...
Click to collapse
I cannot answer any of your 4g questions because I do not have our where I live.
Light leakage issue is because the screen can separate from the body of the phone. Hard to explain what it looks like. Mine had it slightly but does not bother me.
Fyi...if you flash a aosp rom your camera will most likely not work. 4g and hdmi will not work either until cyanogen and teamdouche get it working. Should not be too long at all for 4g on cyanogenmod. A couple weeks or so I would GUESS.
Don't take your evo back. If you have anything else you have a question about feel free to pm me
Swyped from my cyanogenized and gingerbreaded EVO

twiz0r said:
I cannot answer any of your 4g questions because I do not have our where I live.
Light leakage issue is because the screen can separate from the body of the phone. Hard to explain what it looks like. Mine had it slightly but does not bother me.
Fyi...if you flash a aosp rom your camera will most likely not work.
Don't take your evo back. If you have anything else you have a question about feel free to pm me
Swyped from my cyanogenized and gingerbreaded EVO
Click to expand...
Click to collapse
Well I'm in love with the device already I think I somewhat understand light leakage as my hero might have suffered from this(if its the same thing). I live in Houston tx the 4g seems ok but mine dropped 1 or 2 times but that should be no biggie. Lastly, thanks for the warm welcome and help man.
Sent from my new EVO via Tapatalk app.

dirkyd3rk said:
Whats going on dudes i been in the heroc forum since launch and finally decided to let her go. I know im a tad bit late but I got my evo over xmas and just had some questions that I thought id ask before I even attempt to root; i have 30 days to return it. I done some searching and came across a few threads of common probs so im gaining some knowledge. What does this so called "light leakage" look like and what should I look for. I also saw something about some peoples phones not holding 4g; how long should It hold 4g before it drops? I did see some users mention hardware version; mine says 0004. Sorry if im asking to much i just dont want to get really settled in and start noticing problems and i have to take it back. So what should i really be looking for to make the call to take this sucker back before 30 days is up. Thanks in advance
Click to expand...
Click to collapse
Hey there and welcome. Definitely stay with the evo. It's off the chain. Make sure you find the proper way to root your hardware version. I've heard it can be a little tricky. After you root I suggest using Myn's Warm Rom. It's based off stock but has several goodies. Sprint hotspot is unlocked, it's fast and snappy. I use Myn with Calkulins new kernel. It gives you awesome battery life. If you need some assistance with anything don't hesitate to PM me. I'm more than willing to help. Hope you stay and enjoy the ride.

squick said:
Hey there and welcome. Definitely stay with the evo. It's off the chain. Make sure you find the proper way to root your hardware version. I've heard it can be a little tricky. After you root I suggest using Myn's Warm Rom. It's based off stock but has several goodies. Sprint hotspot is unlocked, it's fast and snappy. I use Myn with Calkulins new kernel. It gives you awesome battery life. If you need some assistance with anything don't hesitate to PM me. I'm more than willing to help. Hope you stay and enjoy the ride.
Click to expand...
Click to collapse
That's sounds awesome and exactly what I want to do. My main goal is just to get root access and keep rockin sense; I just want to be able to remove the bloatware really i.e sprint nascar, football etc and unlocking WiFi tether. Unfortunately my phone came with 2.2(651.1) so I can't root just yet I don't think but day #3 with my evo is freaking sweet.
Sent from my new EVO via Tapatalk app.

Mine came with 2.2 as well.that doesn't mean you can't root it.you can root all evo's. Like I said before it's going to matter what hardware you have. It really depends on your hboot version. Power off the phone then while holding down the volume button press and hold the power button till the screen comes on completely. Now at the top you can see your hboot version.search the forum on how to root your version. If you have trouble finding the correct way pm me with your hboot version as well a your hardware version. You can find that in settings under about phone.look for hardware info.then it will be a 4 digit# such as 0003.
Sent from my PC36100 using XDA App

I have the 2.10 hboot but I was waiting to root because I heard unrevoked might release a beta for my version 0004 with my hboot. Reason I haven't rooted yet is because I read its a pain in the butt to root with my hboot at the moment since I have the latest update as well.
Sent from my PC36100 using Tapatalk

dirkyd3rk said:
I have the 2.10 hboot but I was waiting to root because I heard unrevoked might release a beta for my version 0004 with my hboot. Reason I haven't rooted yet is because I read its a pain in the butt to root with my hboot at the moment since I have the latest update as well.
Sent from my PC36100 using Tapatalk
Click to expand...
Click to collapse
If you want to root now here is the thread to root your hboot- http://forum.xda-developers.com/showthread.php?t=829045
It's up to you if you want to go ahead and do it. No one knows how long it will be till unrevoked is working. Which ever way you decide to go with you're going to be very happy with the evo.

Hi Dirky-
I am also moving from Hero to EVO, should have the EVO on Friday.
Please keep posting as you find out any info!
I'm excited to get it!!!!

squick said:
If you want to root now here is the thread to root your hboot- http://forum.xda-developers.com/showthread.php?t=829045
It's up to you if you want to go ahead and do it. No one knows how long it will be till unrevoked is working. Which ever way you decide to go with you're going to be very happy with the evo.
Click to expand...
Click to collapse
I just want to say thanks again for all your info I'm going to give root a run right now.
Sent from my PC36100 using Tapatalk

neemypeemy said:
Hi Dirky-
I am also moving from Hero to EVO, should have the EVO on Friday.
Please keep posting as you find out any info!
I'm excited to get it!!!!
Click to expand...
Click to collapse
I haven't put it down yet lol, and will do for sure
Sent from my PC36100 using Tapatalk

dirkyd3rk said:
I just want to say thanks again for all your info I'm going to give root a run right now.
Sent from my PC36100 using Tapatalk
Click to expand...
Click to collapse
Hit me up if you need any assistance. If you click on my name you can send me personal messages. Good luck!

don't root! giving yourself the opportunity to flash custom roms and install tweaks will have you constantly checking and scouring xda for more info and new roms,
can tell yourself you won't go to far but you will, prepare for constant playing with and updating/tweaking your Evo

NewZJ said:
don't root! giving yourself the opportunity to flash custom roms and install tweaks will have you constantly checking and scouring xda for more info and new roms,
can tell yourself you won't go to far but you will, prepare for constant playing with and updating/tweaking your Evo
Click to expand...
Click to collapse
That's cool man Ive gone thru 4 diff devices with xda I know rooting is a hobby for sure once you root you're on the site all day long. I really just want to gain root so I can remove all the stupid bloatware and get tether. Thats all I need
Sent from my PC36100 using Tapatalk

Just rooted my new EVO with Hboot 2.02 with the Universal Autoroot method, was quick and easy.

neemypeemy said:
Just rooted my new EVO with Hboot 2.02 with the Universal Autoroot method, was quick and easy.
Click to expand...
Click to collapse
Did you ? Yeah your hboot was a little easier lol but I do recommend you get off the Sprint lovers Rom and try azrael 3.0 by rick its insanely fast.
Sent from my PC36100 using XDA App

Thanks, have been wondering which one to try first, will give it a go~!

neemypeemy said:
Thanks, have been wondering which one to try first, will give it a go~!
Click to expand...
Click to collapse
Yeah I couldn't use auto root had to do it long way bummer huh. Azrael is still sense Rom and it comes with goodies and WiFi tether. I also just read that cyanogen got the camera working on hardware 0004 which is what my phone is and maybe yours. That means we can use cm6 or 7 and rock a vanilla rom.
Sent from my PC36100 using Tapatalk

Well it was sent directly from Sprint and got it yesterday, so you would think I would get the latest version, but mine is 003.

neemypeemy said:
Well it was sent directly from Sprint and got it yesterday, so you would think I would get the latest version, but mine is 003.
Click to expand...
Click to collapse
Your phone is just as new as mine but I just have diff camera. That's really all.
Sent from my PC36100 using Tapatalk

[Q] Evo 4G Gingerbread 2.3.3 Root?

Okay, so I ordered my Evo 4G back in June right before Sprint emailed me about the Evo 3D coming in 12 days from that date. When my Evo arrived, I activated it by calling sprint, made a test call, checked the software (2.2.1 I believe), threw the phone in my pocket and drove to soccer practice. When I got back home from practice, my phone had updated to 2.3.3. I suppose autoupdating was on or something and it ran the OTA itself while I was at practice. So now I am trapped with a 2.3.3 Evo with S-ON and I am furious. I am sure that there are others like me with a never rooted Evo dying to get theirs rooted as well. If anyone has any information as to the progress of either a real TEMP ROOT or FULL ROOT then don't hesitate to post it in this thread. I don't want this to be a discussion thread; just a simple "Post What You Know" sort of thing.

nickelghandi said:
Okay, so I ordered my Evo 4G back in June right before Sprint emailed me about the Evo 3D coming in 12 days from that date. When my Evo arrived, I activated it by calling sprint, made a test call, checked the software (2.2.1 I believe), threw the phone in my pocket and drove to soccer practice. When I got back home from practice, my phone had updated to 2.3.3. I suppose autoupdating was on or something and it ran the OTA itself while I was at practice. So now I am trapped with a 2.3.3 Evo with S-ON and I am furious. I am sure that there are others like me with a never rooted Evo dying to get theirs rooted as well. If anyone has any information as to the progress of either a real TEMP ROOT or FULL ROOT then don't hesitate to post it in this thread. I don't want this to be a discussion thread; just a simple "Post What You Know" sort of thing.
Click to expand...
Click to collapse
The best place for you to get information at this point is following some devs on twitter: alpharevx,Agraben,Unrevoked. I'm sure others can add to this list.
They seem to be making the most progress.
And sorry to hear about your phone updating itself. That sucks.

nickelghandi said:
Okay, so I ordered my Evo 4G back in June right before Sprint emailed me about the Evo 3D coming in 12 days from that date. When my Evo arrived, I activated it by calling sprint, made a test call, checked the software (2.2.1 I believe), threw the phone in my pocket and drove to soccer practice. When I got back home from practice, my phone had updated to 2.3.3. I suppose autoupdating was on or something and it ran the OTA itself while I was at practice. So now I am trapped with a 2.3.3 Evo with S-ON and I am furious. I am sure that there are others like me with a never rooted Evo dying to get theirs rooted as well. If anyone has any information as to the progress of either a real TEMP ROOT or FULL ROOT then don't hesitate to post it in this thread. I don't want this to be a discussion thread; just a simple "Post What You Know" sort of thing.
Click to expand...
Click to collapse
Wht is your Hboot version?

well it does not really matter the hboot. i can tell you, it is hboot 2.16. all gingerbread 2.3.3 regardless of software version (4.22.651.2 and 4.24.651.1) will have that hboot.
and unfortunately the devs will not post any progress. they may or may not post when an exploit is found. they may just post only when a temp root is available. it is all hush hush for fear of htc or even sprint releasing a silent ota that can close the exploit. so for now if you do not see any threads about an exploit or an ability to root your evo, then you should just wait. there will be posts (more like thousands, lol) about it.

proalsren said:
wht is your hboot version?
Click to expand...
Click to collapse
hboot: 2.16.0001
radio: 2.15.00.05.02

ocnbrze said:
well it does not really matter the hboot. i can tell you, it is hboot 2.16. all gingerbread 2.3.3 regardless of software version (4.22.651.2 and 4.24.651.1) will have that hboot.
and unfortunately the devs will not post any progress. they may or may not post when an exploit is found. they may just post only when a temp root is available. it is all hush hush for fear of htc or even sprint releasing a silent ota that can close the exploit. so for now if you do not see any threads about an exploit or an ability to root your evo, then you should just wait. there will be posts (more like thousands, lol) about it.
Click to expand...
Click to collapse
I see. Well alright. I'll just wait patiently. I know the Devs will come up with something. They always do. Thanks for the reply.

I just bought my Evo 4G (RadioShack is having a sale on them now that the 3D is out) It also self-updated. I would really like to get it rooted. It comes with so much Sprint Bloatware I can only download a few apps before getting the "low space" warning.
Any help is appreciated.

Well... Is nothing you can do for now... Just waiting with all of us.
Unfortunately I received a new Evo from repair center with Hboot 2.16.0001 and last OTA included. I miss my rooted EVO...
Hope devs find a solution soon, thanks to everyone working on it.

I doubt very seriously its an auto ota update. If that was the case no one in the evo threads would still have root. It would've auto dated every evo still with 2.2, besides it says make sure the battery is full before u take it. #justsaying
Sent from my PC36100 using XDA App

please dont get mad but what is S-on purpose?
I couldve swore I seen it once when i was in diag mode.

ColombianCoffee said:
I just bought my Evo 4G (RadioShack is having a sale on them now that the 3D is out) It also self-updated. I would really like to get it rooted. It comes with so much Sprint Bloatware I can only download a few apps before getting the "low space" warning.
Any help is appreciated.
Click to expand...
Click to collapse
make sure you get a good cleaner for history and cache it will help temporarily until a root for 2.3.3 is out.

jus download the 2.2 froyo ruu and run it and down grade back and root using unrevoked forever.
Sent from my PC36100 using XDA Premium App

bmfluitt1984 said:
jus download the 2.2 froyo ruu and run it and down grade back and root using unrevoked forever.
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
/facepalm with a brick. So /facebrick.

bmfluitt1984 said:
jus download the 2.2 froyo ruu and run it and down grade back and root using unrevoked forever.
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
If it were that simple, then the last revision of www.unrevoked.com would still work.

pandamaja said:
/facepalm with a brick. So /facebrick.
Click to expand...
Click to collapse
Now I am waiting for the guy with a refurb that is 2.3.3 S-Off to show up and say he has no problem flashing PC36IMG.zip files.
Rinse and repeat.

I just got my asurion phone today and while im pumped that its a brand new phone and came with new box and charger (YAYYY! i lost my old cord and charger a long time ago) i am deeply saddened by my findings today. Ill live since I like the sprint themes and functionality better than CM since my GPS stopped working on CM7 but i want to root so i can get wireless tether and whatnot.
in the mean time can anyone tell me how to shut the phone off all the way without pulling the battery. power off by pressing power button pretty much just puts it to sleep you cant get to recovery or hboot when powering back on.

pandamaja said:
/facepalm with a brick. So /facebrick.
Click to expand...
Click to collapse
I have been having a great time laughing at posts today. This freekin cracked me up. Thank!

Michaud85 said:
in the mean time can anyone tell me how to shut the phone off all the way without pulling the battery. power off by pressing power button pretty much just puts it to sleep you cant get to recovery or hboot when powering back on.
Click to expand...
Click to collapse
Uncheck fastboot?
Settings > Applications > Fast boot

Nick N said:
Uncheck fastboot?
Settings > Applications > Fast boot
Click to expand...
Click to collapse
ah yes. thanks

were in the the same boat :/

[Q] Taking rooted EVO in for service

I have an EVO with a cracked screen that's running one of the CM7 nightlies. I need to take it in for service, but I was wondering if I should flash back to some stock ROM first. If I do, what should I download that will allow me to re-root the phone? If I understand things correctly here, the current Sprint image has not been rooted yet, so I want to make sure that I don't wind up locking myself out of my phone.

Flash the ruu for 2.2 and make sure when you take it in you make sure to tell the tech not to update your phone cause they will do it out of habit.
Sent from my PC36100 using XDA App

arekcl said:
Flash the ruu for 2.2 and make sure when you take it in you make sure to tell the tech not to update your phone cause they will do it out of habit.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Any idea where I might find the specific RUU that I will be able to root my way out of?

last time I took my Evo for service I was running Mik3D... they replace the kickstand without any questions.. also tech guy was looking at different setting in my phone and didn't said a word to me..

Anku13 said:
last time I took my Evo for service I was running Mik3D... they replace the kickstand without any questions.. also tech guy was looking at different setting in my phone and didn't said a word to me..
Click to expand...
Click to collapse
I get the impression that they mostly don't care. I originally took it in last month and the guy first asked if it was rooted (the lock screen was different), to which I replied yes, and he said something along the lines of "cool I rooted mine too". He then asked if I had insurance, and when I said no, he told me to sign up for insurance and come back in a month. Yet another reason I'm happy with Sprint

Eh, it is a hardware issue, cracked screen. You should be able to leave it as is. If you want, put a PC36IMG.zip of stock Froyo on your SD card in case they are ridiculous and insist on unrooting. Never S-On, they rarely ever check for it
Sent from my PC36100 using XDA Premium App

luma said:
I have an EVO with a cracked screen that's running one of the CM7 nightlies. I need to take it in for service, but I was wondering if I should flash back to some stock ROM first. If I do, what should I download that will allow me to re-root the phone? If I understand things correctly here, the current Sprint image has not been rooted yet, so I want to make sure that I don't wind up locking myself out of my phone.
Click to expand...
Click to collapse
Sprint service and repair policy FACTS
Please search next time.

[Q] How do I brick my phone

I kinda of want to intentionally brick my phone just so sprint would replace it. I have been having some trouble with my evo lately, it just started to reboot so frequently lately. I was running decks 1.2.1 and just thought it was the rom, so i completely wipe everything, reflash and same thing. I noticed when my phone rebooted it would get hot or warm, and gps did not work after flashing decks 1.2.1, trying to use gps would automatically cause the phone to reboot. Any rom with the vision gps drivers would cause phone to reboot when trying to use gps, only gps driver that would work was the cm7 drivers, mainly used the N39 one and that would work and I could use gps, but phone kept rebooting. So then i tried to flash the latest stock rom, but had same problem. Also tried to use myn's warm rom release 5, which was always so stable in the past and never had any problems with when i was using it in the past, but yea phone just would reboot at random when phone would get warm or just doing stuff. Then i flashed the latest radio, pri, nv, and hboot. Went back to decks but its very frustrating, i can not use my phone for a long time or it warms up and goes into a bootloop, then have to pull the battery and give it a couple minutes to cool down before i can pop the battery back in and have it not reboot immediately afterwards. So after all this i was just gonna try and brick it to see if i could get another evo, but yea i tried to flash a radio and battery pull but that did not work. Did i screw myself by flashing the latest hboot?

Why don't you flash a stock rom. See if it still does it and then go to sprint and tell them all the problems you're having
We're comin from a pure power source.

That's insurance fraud dude, cause everyone's prices to go up. Don't be that guy.
Sent from my PC36100 using XDA App

I did try a stock rom and it kept happening. That is why I was trying to brick it so they would just exchange it. If I take it to sprint I would need to flash a RUU right? Then deal with sprints b.s. until they exchange it.

I've never had a problem getting my phone replaced. You have problems with your phone. They will replace it. And yes, the ruu will return it to stock.
We're comin from a pure power source.

alaman68 said:
That's insurance fraud dude, cause everyone's prices to go up. Don't be that guy.
Click to expand...
Click to collapse
How is it insurance fraud? My phone is not working properly, I have been paying an insurance charge on my plan since the launch of the evo. Don't want to deal with their very annoying employees and just want a replacement, is that too much to ask for?
metalfan78 said:
I've never had a problem getting my phone replaced. You have problems with your phone. They will replace it. And yes, the ruu will return it to stock.
Click to expand...
Click to collapse
Well it seems like that is what I am gonna need to do. Must have bad luck then, because I have had a horrible experience getting a phone replaced but thanks.

Pull your battery while flashing a radio update should def brick you but you should just unroot if your worried.
Sent from my PC36100 using XDA App

ellshock said:
How is it insurance fraud? My phone is not working properly, I have been paying an insurance charge on my plan since the launch of the evo. Don't want to deal with their very annoying employees and just want a replacement, is that too much to ask for?
Click to expand...
Click to collapse
Return to stock and deal with the bs
Sent from my PC36100 using XDA App

Just tell them you lost it, and they'll overnight you one.

linsalata28 said:
Pull your battery while flashing a radio update should def brick you but you should just unroot if your worried.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
That will definitely brick it.

It sounds like a hardware issue. Sprint will replace it. Don't brick your phone, not worth it.
RUU to the latest update. Get S-On (there are a few threads with tutorials). Try to document your phone acting up if you can (I had an overheating issue with my old phone so I took screenshots of an app showing my phone 135+ degrees. Reboots, maybe video it, I don't know.)
Sent from my HTC Evo using xda premium