It's been a week. Did you do a reset after ICS was installed?
And has your battery issue been fixed?
Reset.
Problem still exists.
Thanks.
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It's been a week. Did you do a reset after ICS was installed?
And has your battery issue been fixed?
Had the same battery issue after ICS upgrade.
Fixed with factory reset.
Check this thread for info: http://androidforums.com/samsung-ga...date-telus-galaxy-tab-10-1-a.html#post4953561
Yes.if i factory reset my android phone, will all the apps will be wiped away? even the built in games and apps? thanks
All I can say is that my Tab GT-P7500 3G has no battery drain issue. I'm not sure but it may be a 'factory reset' issue either before or post update. I did a reset before AND after the update to Samsungs ICS v4.0.4 update, and it works well.What an interesting thread but also slightly worrying to find other people with this battery drain problem.
I too have a 3G model P-7500 with a SIM card. I don't have any issues with battery running the official ICS v4.0.4 from the European firmware update. I installed using UK English settings. I did not use the carrier branded firmware (Rogers Canada) as it has junk I don't want. The generic European has no extra apps or settings and it works great on my Tab.Hi folks,
I received a reply from Samsung - essentially suggesting that I do a factory reset, which I did. However, it hasn't solved the problem - battery still falls at 1.6% per hour even when switched off. After some detective work, I have tracked down the culprit - the Phone Dialler!
A search on the internet reveals that the Android stock Phone Dialler has a chequered history of causing memory, CPU and battery problems. When left overnight, 50% of the tab battery is being eaten by this run-away process. Compare this with the OS, which is using 30%.
I should add that my SGT10.1 is a 3G model and I use a mobile phone SIM in order to send and receive SMS messages via my carrier (Vodafone UK).
Hi bfksc,Did you use a carrier branded update? If so, perhaps that is the cause of the rogue battery usage? I don't even see 'phone dialer' as a service in the battery usage settings.
Take a look at the info in Settings, About device, 'baseband version'. Post that string and it will let us know if it's branded or not.I do not believe that I used the Vodafone branded update but how would I know? I simply received a notification to update but I don't recall anything popping up to say whether it was Vodafone, Samsung or BT (my ISP) from whom the update was being supplied. I assume it came from Samsung and I downloaded it via WiFi, not mobile data. Furthermore, I originally purchased my tab from Amazon UK, not Vodafone.
Strange that only some have the issue...we'll have to continue to dig.I have been doing more digging and Samsung want me to return my tab to them in order to take a look at it. I'm not convinced that will be of any benefit. The problem is that my tab is being prevented from going into the deep sleep state. Using GSAm Battery Monitor, I have established that a kernel wakelock called l2_hsic is preventing my tab from sleeping 90% of the time.
Hi bfksc,Take a look at the info in Settings, About device, 'baseband version'. Post that string and it will let us know if it's branded or not.
That's the same baseband as mine so it's a generic UK firmware. When you did a factory reset, you installed some apps, right? You're using a battery monitor which often affects battery life. Also app killers are not necessary since FroYo v2.2, and they consume battery at a large rate. I don't use either and no problems here.Hi bfksc,
The baseband version is P7500XXLQ8.
OK, so I have generic UK firmware. I did install some of my original apps but only those that I consider important. I am fully aware that some battery monitors can affect battery life. Not the ones I use. App killers are not a part of my vocabulary. The fact of the matter is that something is preventing my tab from going into deep sleep. This happens 90% of the time overnight. According to GSam and Better Battery Stats, this is being caused by the l2_hsic wakelock.That's the same baseband as mine so it's a generic UK firmware. When you did a factory reset, you installed some apps, right? You're using a battery monitor which often affects battery life. Also app killers are not necessary since FroYo v2.2, and they consume battery at a large rate. I don't use either and no problems here.
Ok, I did some more reading and that's a standard call in the firmware that many apps use to wake up the device to perform tasks. On my phone the Beautiful Widgets makes 'wakelock' calls to do background weather updates, as does Gmail and many other apps. However, I believe a rogue app is making excessive 'wakelock' calls and is keeping your Tab awake. When I look at my Tab, after 2 days, Gmail, Maps, and BW only use a combined total of about 120mins of wake time with about 100mins of that is active usage. That means about 20mins is used to wake the device while sleeping. This is normal and good. In my opinion, something else is making calls on your device and that's what is eating up the battery.OK, so I have generic UK firmware. I did install some of my original apps but only those that I consider important. I am fully aware that some battery monitors can affect battery life. Not the ones I use. App killers are not a part of my vocabulary. The fact of the matter is that something is preventing my tab from going into deep sleep. This happens 90% of the time overnight. According to GSam and Better Battery Stats, this is being caused by the l2_hsic wakelock.
Sorry you're having problems, but I love my Samsung products. I have 2 flat panel TV's, a computer monitor, 2 phones, and my tablet. All of them work great.I am at the end of my tether with Samsung UK. Customer service is diabolical. I don't think I will buy another Samsung product in a hurry. JPC
I have a 'phone SIM card' as most 3G/4G tablets do. In order to provide cellular data on a tablet, they need to assign a cellular ID. I have a phone number associated with it, but it doesn't do anything if I call it.Out of interest, knowing that you have the 3G model, do you simply have a mobile data SIM or do you have a phone SIM - in other words, mobile data + voice calls?
That's what I would do, either deleting one at a time, or reset and install one at a time. I'm pretty sure it's an app that's keeping the tablet awake.the l2_hsic wakelock is apparently something to do with USB and/or the 3G side of things. Guess I could uninstall any 3G-related apps one by one to see what happens.
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