I've had my I747 at&t now for 6 months, about 2 weeks ago It started shutting down on me on it's own, at that time I was rooted and had a custom rom installed that was working perfect. It was the HighOnAndroid ROM v0.3 from galaxys3root.com. There were no problems at all until 2 weeks ago too. So I used Kies to factory restore and upgrade to1747UCDLK3 to see if it was my rom I I had installed. My phone works now, but I have a problem with the battery I can't figure out.
here's what it does, I charge my battery at the end of the day to 100% and turn it off, then the next morning it's always down to around 70% even though it is off all night. It didn't do this before at all, have you had this issue or can give me some advice? thank you
Edit...FYI I use this phone on Straight Talk and have reformatted my 32 gig sd too just to start clean.
Chocketbear said:
I've had my I747 at&t now for 6 months, about 2 weeks ago It started shutting down on me on it's own, at that time I was rooted and had a custom rom installed that was working perfect. It was the HighOnAndroid ROM v0.3 from galaxys3root.com. There were no problems at all until 2 weeks ago too. So I used Kies to factory restore and upgrade to1747UCDLK3 to see if it was my rom I I had installed. My phone works now, but I have a problem with the battery I can't figure out.
here's what it does, I charge my battery at the end of the day to 100% and turn it off, then the next morning it's always down to around 70% even though it is off all night. It didn't do this before at all, have you had this issue or can give me some advice? thank you
Edit...FYI I use this phone on Straight Talk and have reformatted my 32 gig sd too just to start clean.
Click to expand...
Click to collapse
Are you still rooted and on the stock 4.1.1 ?
This has been going on for two weeks ?
hednik said:
Are you still rooted and on the stock 4.1.1 ?
This has been going on for two weeks ?
Click to expand...
Click to collapse
No, kies removed the root and I'm on jelly bean"which was samsungs update
Chocketbear said:
No, kies removed the root and I'm on jelly bean"which was samsungs update
Click to expand...
Click to collapse
I never used the plain stock with Keis update. I would normally just suggest to just flash it again. Are you opposed to rooting again and installing a customer recovery or do you want to stay completely stock ?
hednik said:
I never used the plain stock with Keis update. I would normally just suggest to just flash it again. Are you opposed to rooting again and installing a customer recovery or do you want to stay completely stock ?
Click to expand...
Click to collapse
No, I liked it rooted....just trying to figure out what happened. I just don't understand how the battery can drain that much if the phone is off. I may reroot of I can get past this part, It's seems to run down no matter which rom is on it.
I would reccomend gsam battery monitor and cpuspy. That should help determine the problem. It helped me when I had a similar issue.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Powered off or sleeping?
If you physically turn the phone off (not just sleep mode), then something is up with the battery.
Try powering to 100% charge, then discharge all the way down to 5%. Then charge to 100% again and see if that helps.
My phone was only ever able to charge to 70% for a few days. A complete discharge was able to fix it for me.
CZ Eddie said:
Powered off or sleeping?
If you physically turn the phone off (not just sleep mode), then something is up with the battery.
Try powering to 100% charge, then discharge all the way down to 5%. Then charge to 100% again and see if that helps.
My phone was only ever able to charge to 70% for a few days. A complete discharge was able to fix it for me.
Click to expand...
Click to collapse
It's shutting down, but i cant say I've ever let it get down to 5%, I just top it off. I did charge it to 100% one night , remove the battery and reinstalled it the next morining, It was still 99% by leaving it out of the phone, go figure, I 'll try your tips too
boothcr79 said:
I would reccomend gsam battery monitor and cpuspy. That should help determine the problem. It helped me when I had a similar issue.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Thanks, I'll check those out too
Related
my phone literally just died on my desk
for absolutely no reason
the battery is charged, so that's not it I was using it less than 30 minutes ago and just picked it up to watch a video... nothing... did a battery pull... nothing
out of deperation I tried using one of the USB jigs that I have used in the past on older galaxy s to get into download mode and it worked
now to try to find a stock odin flashable image, even though i'm debating on just returning this phone... just dying like that in one week is unacceptable and reminds me of the issues the G2x had
ppctester said:
my phone literally just died on my desk
for absolutely no reason
the battery is charged, so that's not it I was using it less than 30 minutes ago and just picked it up to watch a video... nothing... did a battery pull... nothing
out of deperation I tried using one of the USB jigs that I have used in the past on older galaxy s to get into download mode and it worked
now to try to find a stock odin flashable image, even though i'm debating on just returning this phone... just dying like that in one week is unacceptable and reminds me of the issues the G2x had
Click to expand...
Click to collapse
This happened to me as well. check this out http://forum.xda-developers.com/showthread.php?t=1306852
princeasi said:
This happened to me as well. check this out http://forum.xda-developers.com/showthread.php?t=1306852
Click to expand...
Click to collapse
damn it.. if this is ANOTHER G2x-like fiasco.. I'm gonna return this and say goodbye to Tmo... it's their retarded request that the hardware be changed for their network instead of having the normal exynos CPU
didn't hear of any issues like this for the original SGS2 international/AT&T versions
ppctester said:
damn it.. if this is ANOTHER G2x-like fiasco.. I'm gonna return this and say goodbye to Tmo... it's their retarded request that the hardware be changed for their network instead of having the normal exynos CPU
didn't hear of any issues like this for the original SGS2 international/AT&T versions
Click to expand...
Click to collapse
I dont think its that serious. I think its a software bug with the battery meter freezing without knowledge of it. When it freezes without indication, we end up continuously using the phone till the battery completely discharges without knowing.
princeasi said:
I dont think its that serious. I think its a software bug with the battery meter freezing without knowledge of it. When it freezes without indication, we end up continuously using the phone till the battery completely discharges without knowing.
Click to expand...
Click to collapse
i replied in your other thread... I was able to reflash the kernel and the phone booted right away without having to wait for a charge like it would have if the battery was completely drained
I flashed a rom 2 days ago. Ever since then, if my phone sleeps for a while in my pocket, it will not wake. I have to hold power to reboot. Anyone heard of this? Know a fix?
Not on cm9 or 10. TW based from here.Thought I had heard of this before.
Thanks in advance for any and all help!
Sent from my SPH-D710 using Tapatalk 2
jwalk74 said:
I flashed a rom 2 days ago. Ever since then, if my phone sleeps for a while in my pocket, it will not wake. I have to hold power to reboot. Anyone heard of this? Know a fix?
Not on cm9 or 10. TW based from here.Thought I had heard of this before.
Thanks in advance for any and all help!
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
I am having a similar issue. After flashing to Phantom Blazer ICS ROM, I inadvertently ran ROM Manager and tried to flash CWM 5.0.2.7 that way. Since then I've wiped numerous times and flashed several other ROMs, even performing a nandroid restore to GB Blazer ROM, but to no avail. The phone screen and buttons still flash a bit as a precursor to my phone shutting down, and upon reboot my battery drains down to 2% and goes to shut off again. This happens repeatedly unless I leave my phone on a charger. This has lead me to believe that it may be a battery problem, but I cannot confirm until I receive my new battery in a few days. Hope someone can shed some light on this.
Anything odd with the wi-fi?
Those that seem to be having these issues seem to also have wi-fi issues.
For example, my phone freezes at work due to the wi-fi config. If I drop it, no problems whatsoever.
I just get the cheap ones off eBay you get a lot for a couple dollars.
Sent from my SPH-D710 using XDA
mrrogers12 said:
I just get the cheap ones off eBay you get a lot for a couple dollars.
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
Which is awesome if you like having extremely shoddily made potential bombs/incendiary devices in a $500 phone in your pocket close to your gentelmans area... me? I pay the ~$20 for an OEM battery... lasts longer than those things too
Sent from my SPH-D710 using Tapatalk 2
Sleep of Death or Hardware?
I too am having this problem. Long story short a few days ago I flashed CM10 Alpha4 and noticed out of no where my phone would just turn off. No boot off ani, nothing. It drains my battery to 1%. I did several wipes, formatting, clearing, stock GB, many different ICS roms with TONS of different kernels (i thought it was kernel related). Nothing helps. My phone does this while charging too. It also does it when the screen is on and I can predict when it's going to shut off because the backlight starts pulsing, then BAM RIGHT IN KISSER! It. Sucks.
Currently on FH13 Wicked Sensations with Kuban kernel .0.5, I guess it's betetr. But, idk.
I hope there's a fix, but I'm thinking it's a hardware dealy.
I guess..least with the cheap ones you mess them up putting them on you just wasted that money lol..
Sent from my SPH-D710 using XDA
mrrogers12 said:
I guess..least with the cheap ones you mess them up putting them on you just wasted that money lol..
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
Sorry for off topic tread jacking, but how???????!? Do you manage to ruin a battery by putting it"on"
Sent from my SPH-D710 using Tapatalk 2
i have updated the stock tar of fh13 and i have so much bad battery life ever and also a sleep issue i put it to standyby and it wont power on so i want to go back all the way to stock el29 so i can receive stock ota update if any after can you advice!!!!!!!!!!!!!!!!
I just updated my father's phone with EH13 stock rooted due to battery life issues. His phone is suffering from the same "sleep of death" issue, but I have no idea why.
WisdomWolf said:
I just updated my father's phone with EH13 stock rooted due to battery life issues. His phone is suffering from the same "sleep of death" issue, but I have no idea why.
Click to expand...
Click to collapse
I had SOD for 3 days and just before my screen started fading in and out, I locked my phone. When I unlocked it, it saw that Maps.Process.Whatever stopped responding. I thought that was weird bc I haven't opened Google Maps yet with this new ROM flash. So, I went into Settings > Location Services > and UNCHECKED location and google search. Since then, no SOD. I have no idea if this works for everyone. Maybe you can try that...idk
TheDudeAbides said:
I had SOD for 3 days and just before my screen started fading in and out, I locked my phone. When I unlocked it, it saw that Maps.Process.Whatever stopped responding. I thought that was weird bc I haven't opened Google Maps yet with this new ROM flash. So, I went into Settings > Location Services > and UNCHECKED location and google search. Since then, no SOD. I have no idea if this works for everyone. Maybe you can try that...idk
Click to expand...
Click to collapse
I will give this a try this tonight and run it through tomorrow, see if it helps with my issue (which sounds a whole lot like your issue). Will report back tomorrow night, thanks for the tip!
i was so fed up i use the el29 stock tar file went back to it and now i received a official 4.04 update imma afraid to update lol...battery suck..now batter life on this el29 in fine for now..
Tried turning off all location, but SoD still happening very erratically. Still have light pulsing and loss of signal right before shut down. Perhaps it is hardware, but could it really be the battery? Will find out soon when battery arrives in a day or two.
I have been monitoring this for a while now and in several different mods etc. It seems when I leave my phone plugged in fully charged with the screen on it will at a random times just think it has 0% battery even when plugged in it will then shut off. Battery temp is a little high at around 40c. Can't find any running app or process that is throwing up any red flags either. Any ideas? As you can see in the images it just almost instantly drops from 100% to 0% and then shuts down. It doesn't reboot...just shuts off until i power it back on.
a1hildeb said:
I have been monitoring this for a while now and in several different mods etc. It seems when I leave my phone plugged in fully charged with the screen on it will at a random times just think it has 0% battery even when plugged in it will then shut off. Battery temp is a little high at around 40c. Can't find any running app or process that is throwing up any red flags either. Any ideas? As you can see in the images it just almost instantly drops from 100% to 0% and then shuts down. It doesn't reboot...just shuts off until i power it back on.
Click to expand...
Click to collapse
Defective battery or battery sensor, probably. Getting a new battery will fix it.
Sent from my Sprint SGS3
yousefak said:
Defective battery or battery sensor, probably. Getting a new battery will fix it.
Sent from my Sprint SGS3
Click to expand...
Click to collapse
Damn. Does that mean I have to unroot and all that crap before I turn it in to sprint? I am within my 14 days do they really look at my phone at that point or just hand over a new battery?
a1hildeb said:
Damn. Does that mean I have to unroot and all that crap before I turn it in to sprint? I am within my 14 days do they really look at my phone at that point or just hand over a new battery?
Click to expand...
Click to collapse
You don't have to turn your phone in to get a new battery. Just go buy one
HipKat said:
You don't have to turn your phone in to get a new battery. Just go buy one
Click to expand...
Click to collapse
arent they like 20-50 bucks? i just bought the damn thing they can give me a replacement.
Unroot take it to sprint
jbadboy2007 said:
Unroot take it to sprint
Click to expand...
Click to collapse
will do, thanks
Make a nandroid
Use the nandroid on new phone
Sent from my SPH-L710 using xda premium
gtuansdiamm said:
Make a nandroid
Use the nandroid on new phone
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
already have a backed up rom and backed up settings but will more than likely be rooting and using jelly bean stock rom on new phone. will take it in the am. what is the turn around for something like this? will they be hours, days? just say yea whatever heres a new phone? just trying to judge how much time i need to set aside.
a1hildeb said:
already have a backed up rom and backed up settings but will more than likely be rooting and using jelly bean stock rom on new phone. will take it in the am. what is the turn around for something like this? will they be hours, days? just say yea whatever heres a new phone? just trying to judge how much time i need to set aside.
Click to expand...
Click to collapse
Have you tried running stock for a day or two to see if the issue remains?
Sent from my SPH-L710 using xda app-developers app
yea it did the same thing but not as often. I took it in and they ran some test and said it was defective. I hink they didn do sh! t and didnt want to waste their time because they just gave me a new one without even checkng if I had root. I was in and out in less than 10 minutes. so far so good and now running stock JB Rom. good times.
So, I went to look at the time on my phone and it wouldn't turn on. I held down the power button and the back & home buttons just blinked a few times but it didn't turn on. I plugged it into the charger and it's not charging, no LED light or anything, and it won't turn on.
Does anyone know what could have happened or how to fix it?? I noticed earlier it was running a little hot after some app updates. could that have something to so with this? Is my phone dead??
There have been several reports as of late where the same thing has happened. Were you running a custom Rom and kernel?
What recovery were you running?
Sent from my Lunar Ecliptic One.
brymaster5000 said:
What recovery were you running?
Sent from my Lunar Ecliptic One.
Click to expand...
Click to collapse
How come this would be caused by a recovery issue? My phone died just today because I forgot my charging cable at home. I charged it up just fine. If the recovery was the issue I wouldn't have been able to charge my phone up after it died. He overheated his phone which seems to be the link to every other case of this happening.
Recovery "might" be an issue, as if recovery cannot respond to a "power on" it will not turn on. Most recoveries will respond to a "adb reboot" command. That may fix his issue... If his PC recognizes the device. I know certain TWRP had issues with the DNA and it could have bled to the m7
Sent from my HTC6500LVW using XDA Free mobile app
Wouldn't this happen a lot more often if the recovery caused in considering that people run out of battery all the time?
disconnecktie said:
Wouldn't this happen a lot more often if the recovery caused in considering that people run out of battery all the time?
Click to expand...
Click to collapse
Depends if they are using a commonly used recovery, or if the MD5 matched. I never let my battery go below 30% as most users should try their hardest to not also, fully draining li batteries drastically reduces their life and capacity.
Edit: it is also good to see everyone's setup who has this issue so we can find the common thing every time it happens.
Sent from my HTC6500LVW using XDA Free mobile app
Uzephi said:
Depends if they are using a commonly used recovery, or if the MD5 matched. I never let my battery go below 30% as most users should try their hardest to not also, fully draining li batteries drastically reduces their life and capacity.
Edit: it is also good to see everyone's setup who has this issue so we can find the common thing every time it happens.
Sent from my HTC6500LVW using XDA Free mobile app
Click to expand...
Click to collapse
Yea I generally try to not get way to low. It's a scary thought though that if you happen to forget to charge your phone it might not charge back up. That's why I was interested in what rom and kernel he was using. Plus it seemed to be that most of the people who couldn't recharge had an overheating issue before hand which is more or less why I don't believe it is a recovery issue.
Ok, for some reason it's working again. As I said before, it was just completely dead (wouldn't power on, no LED light when plugged into two different chargers, two different outlets) then I tried again about an hour after all the problems started and it powered on again.
When it came on, it had a 70% charge, so I put it back on the charger and charged it back up to 100%. However, after about two minutes being unplugged, it dropped down to 95%. It's never done anything like that before and this is the first time I've had any kind of problems with it in the year I've had the phone.
Could this have been some sort of temporary battery issue? I'm so confused. Are there and diagnostic tools I can use to try to figure out what happened?
I'm using NuSenseONE-Max_RC6_111313 (4.3 based), not sure what kernel and TWRP recovery. Also, I usually drain the battery down to 15% before I charge it.
Also, this happened after I updated about 20 apps.
JGress said:
Ok, for some reason it's working again. As I said before, it was just completely dead (wouldn't power on, no LED light when plugged into two different chargers, two different outlets) then I tried again about an hour after all the problems started and it powered on again.
When it came on, it had a 70% charge, so I put it back on the charger and charged it back up to 100%. However, after about two minutes being unplugged, it dropped down to 95%. It's never done anything like that before and this is the first time I've had any kind of problems with it in the year I've had the phone.
Could this have been some sort of temporary battery issue? I'm so confused. Are there and diagnostic tools I can use to try to figure out what happened?
I'm using NuSenseONE-Max_RC6_111313 (4.3 based), not sure what kernel and TWRP recovery. Also, I usually drain the battery down to 15% before I charge it.
Click to expand...
Click to collapse
That almost sounds like your battery might be going out but maybe you should update your rom and recovery just out of precaution. You'll need to update your firmware as well since you're probably still running jb firmware considering the age of that rom.
disconnecktie said:
You'll need to update your firmware as well
Click to expand...
Click to collapse
Wait... I thought a ROM and firmware were the same thing.
JGress said:
Wait... I thought a ROM and firmware were the same thing.
Click to expand...
Click to collapse
Not exactly. Grab the firmware from here
http://forum.xda-developers.com/showthread.php?p=46506592
It's version 5.x.605 something lol
Get the one that has no boot and flash it per the instructions in the op. Then grab an updated recovery. I use version 2.7.1.2 from here . http://mdmower.cmphys.com/twrp-m7vzw/ you're more than welcome to flash whatever you like philz or cwm. Then grab a newer rom. Kit Kat has been way better than jelly bean in my opinion.
On the battery dropping to 95% quickly, this is a known software "feature" in android since froyo or earlier. When the phone is fully charged, power cuts off from the Phone and won't "charge" until it hits 90%. System will still show you 100%. It has been proven by many sources that keeping a "trickle" on a fully charged battery will damage it. That is why it probably dropped quickly. Only way to determine if battery is faulty is have it drop below 89% and see it's drain.
Sent from my HTC6500LVW using XDA Free mobile app
disconnecktie said:
Not exactly. Grab the firmware from here
http://forum.xda-developers.com/showthread.php?p=46506592
It's version 5.x.605 something lol
Get the one that has no boot and flash it per the instructions in the op. Then grab an updated recovery. I use version 2.7.1.2 from here . http://mdmower.cmphys.com/twrp-m7vzw/ you're more than welcome to flash whatever you like philz or cwm. Then grab a newer rom. Kit Kat has been way better than jelly bean in my opinion.
Click to expand...
Click to collapse
Ok, thanks for the help!
Does the One maybe have an auto-shutdown feature that triggers if it overheats? I was thinking that was a possibility.
disconnecktie said:
How come this would be caused by a recovery issue? My phone died just today because I forgot my charging cable at home. I charged it up just fine. If the recovery was the issue I wouldn't have been able to charge my phone up after it died. He overheated his phone which seems to be the link to every other case of this happening.
Click to expand...
Click to collapse
Just trying to get the full picture as uzephi said. Just was wondering because there are instances where it can die and if the recovery had a glitch and or missed a charging binary in one build it might not charge...
Sent from my Lunar Ecliptic One.
brymaster5000 said:
Just trying to get the full picture as uzephi said. Just was wondering because there are instances where it can die and if the recovery had a glitch and or missed a charging binary in one build it might not charge...
Sent from my Lunar Ecliptic One.
Click to expand...
Click to collapse
I understand. I asked because I didn't understand why this would be a recovery issue since you can't always keep your phone from dying and having your phone brick as a result would completely suck. Plus, it would be a lot more frequent (you would think anyway) for this same thing to happen. I wouldn't want to use whatever recovery had this issue either. However, I think he just really needed to update his firmware, rom and recovery. I'm surprised he made it this long without needing to upgrade. It also helps knowing all the info because if it was a rom/kernel issue the dev could take a look into what could potentially cause the overheating because the thermal protection written into the kernel isn't doing its job if it allows the phone to overheat to death.
Not the first time that this has happened. Last night, went to sleep at almost midnight, phone was at about 50%. Now that I woke up a few minutes ago, the phone was turned off with 0% battery left.
Anyone else having the same problem? How do I fix it?
(Stock not rooted)
Did you have wifi or the gps on? That could drain it. Also if you have any cpu intensive apps running in the background that might affect it.
Geza
Sent from my SPH-L300 using XDA Free mobile app
gezafisch said:
Did you have wifi or the gps on? That could drain it. Also if you have any cpu intensive apps running in the background that might affect it.
Geza
Sent from my SPH-L300 using XDA Free mobile app
Click to expand...
Click to collapse
WiFi on, not GPS. And no apps running. WiFi alone should never drain 50% in about 9 hours of the phone being on standby.
Yeah. What phone?
Sent from my SPH-L300 using XDA Free mobile app
gezafisch said:
Yeah. What phone?
Sent from my SPH-L300 using XDA Free mobile app
Click to expand...
Click to collapse
(T-Mobile) Samsung Galaxy S6 edge
Oh wow that battery shouldnt be anywhere near bad yet. Do you know if you can get the mAH tested anywhere? The battery could be defective and not holding its full capacity...
Geza
Sent from my SPH-L300 using XDA Free mobile app
XxKINGxX2580 said:
Not the first time that this has happened. Last night, went to sleep at almost midnight, phone was at about 50%. Now that I woke up a few minutes ago, the phone was turned off with 0% battery left.
Anyone else having the same problem? How do I fix it?
(Stock not rooted)
Click to expand...
Click to collapse
I've run into this issue as well. I have GPS on and Wifi off most of the time. The best thing that I've been able to do is flash the stock firmware using the Samsung SmartSwitch application for PC. I saw this solution recommended on another XDA post and YouTube video. I was doubtful it would work, considering the phone is brand new, but after I did it, it helped out quite a bit. I've slept with my phone unplugged now for about 7-8 hours and only saw a decrease of 5% in battery. It's an unfortunate solution, but it could help.
The video I found on this is here: https://www.youtube.com/watch?v=y8AZyalTf5Y
XxKINGxX2580 said:
Not the first time that this has happened. Last night, went to sleep at almost midnight, phone was at about 50%. Now that I woke up a few minutes ago, the phone was turned off with 0% battery left.
Anyone else having the same problem? How do I fix it?
(Stock not rooted)
Click to expand...
Click to collapse
Turn off VoLTE and WiFi Calling. The cell standby will practically disappear from your battery usage list. Reassess after doing that.
Synyster06Gates said:
Turn off VoLTE and WiFi Calling. The cell standby will practically disappear from your battery usage list. Reassess after doing that.
Click to expand...
Click to collapse
Did that weeks ago. 2 days ago I had WiFi calling on because I was in a building with no signal.
XxKINGxX2580 said:
Did that weeks ago. 2 days ago I had WiFi calling on because I was in a building with no signal.
Click to expand...
Click to collapse
Hmm. Try backing up your data with SmartSwitch, flashing stock firmware, then restoring what you can. My first S6 (on my 3rd now... 2nd had dust under screen) had a problem going into deep sleep, and even after factory resets/flashing stock firmware via Odin, I could not solve the problem which makes me think it was hardware related. I was at a loss so I took it back and had them swap the device.
Synyster06Gates said:
Hmm. Try backing up your data with SmartSwitch, flashing stock firmware, then restoring what you can. My first S6 (on my 3rd now... 2nd had dust under screen) had a problem going into deep sleep, and even after factory resets/flashing stock firmware via Odin, I could not solve the problem which makes me think it was hardware related. I was at a loss so I took it back and had them swap the device.
Click to expand...
Click to collapse
Already tried factory resets, re flashing stock, re-calibrating the battery. Nothing. Think i'll have to get a replacement.
XxKINGxX2580 said:
Already tried factory resets, re flashing stock, re-calibrating the battery. Nothing. Think i'll have to get a replacement.
Click to expand...
Click to collapse
Sounds about right - good luck. When I went to have mine replaced the T-Mobile store was dead set on convincing me that it was normal for the phone to drop 35-40% as I slept for 6 hours. Also tried telling me that 6-8 hours battery life with an hour of screen time is normal "because Samsung used a smaller battery". I got pissed, just returned the phone, and paid the $50 restocking fee. T-Mobile corporate asked for a copy of my receipt and just credited the $50 to my bill.