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HomeClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288
Please donate to support OMA and CrewRKTablets firmware work, thank you !
2013/12/16
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OK... here's the catch. It seems that my battery drain issues are there due to my apps. Specificaly, Next Launcher 3D, Asteroids Pack live wallpaper and HD Widgets. Everything is more or less ok (.35% drain per hour) without those apps, but with all of them started, battery drain is about 1-1.5% per hour. The percentage is incremental with every of these apps started, and I don't have any less or any more battery drain with the other steps applied from my previous post. Why aren't these apps put in "eco-mode" while tablet is sleeping, I don't know? But they shouldn't take any resources, should they? I've enabled "battery optimize" features in these apps and don't see what else could I do, except removing them from my homescreen and uninstall them. Maybe I could find some alternatives to these apps, but I really like these ones. But all I wanted to say here that my tablet is not really in deep sleep, although every app say it is. That's why it drains battery. My search is over until final release comes out. Over and out 
2013/06/24
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Hi Guys, I'm having the same problem with battery drain since the upgrade to t14. It's using about 1% ever 30 seconds. Have tried turning stuff off etc but still no difference. Used to go all day without charging. Standby is really good but I start to use the tablet the battery drains in less than 1 hour.
2013/07/20
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same to me
2013/04/30
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nelySLB said
same to me
+1
2013/06/24
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I have also tried restoring back to previous but still did not fix the problem. I have been running on power all the time time because the tablet will only run for about 5 min and then shuts down. I have ordered a new battery to try as I'm thinking the battery chip might have died.
2013/04/04
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David598 said
I have also tried restoring back to previous but still did not fix the problem. I have been running on power all the time time because the tablet will only run for about 5 min and then shuts down. I have ordered a new battery to try as I'm thinking the battery chip might have died.
I have 3 tablets for testing. On one the battery seems ok, but on the other 2, battery lasts barely 30 min. Battery was much better in JB, but I can't downgrade yet.
I've tried all you have posted in the thread, full format, and have no apps, but battery drain is awful.
2013/06/05
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Sorry guys, the battery in these tablets dies rather sooner than later... dozens of cases reported in different forums... you can try to downgrade (easiest method is to flash supersport's ROMS from Freaktab forums since it includes the JB boot loader...) but I'm afraid nothing will change... only solution is a replacement battery. Check posts about the topic here in the forum.
Greetings
Contributor
2013/04/23
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I have attached two MODs for this ROM to help deal with the battery drain issue.
The first will move all the phone stuff to a backup directory (DJ_phone_MOD_kitkat.zip).
The second (DJ_phone_mod_reverse_kitkat.zip) will reverse the actions of the first (don't try using the second if you never used the first!).
DISCLAIMER:
These mods work for me. Your mileage may vary. Either of these mods might brick your tablet, or bring an asteroid crashing down on your planet, or might lead you to the dark side, or whatever else. If in doubt, then do NOT touch or use either of them. You have been warned!
Installation:
To install either of these MODs you must have CWM or TWRP Recovery installed, and you must already have a Kasty KitKat 4.4.2 ROM for Cube U30GT2 from arctablet.com, or the equivalent DarthJabba mod.
Then follow these steps;
0. Read the readme.txt file inside the zip file, and ensure that you understand fully the implications of what the mod will do. There are side effects to using the phone mod. If, after reading the readme file you still wish to proceed, then do these:
1. Copy the relevant zip file to the tablet's internal SD card
2. Reboot the tablet to CWM or TWRP Recovery
3. Select "Install zip from sdcard"
4. Then select "Choose zip from sdcard"
5. Scroll on the SD card to this zip file, and select it
6. Confirm that you do want to install it
7. The tablet will reboot back to the CWM/TWRP Recovery
8. Select "Reboot system now"
9. Wait for 2 minutes after rebooting, and, hopefully, all will be well, and you will get some better battery performance.
Darth Jabba, the Dark Jedi from Nal Hutta
2013/11/30
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Hey, Guys!
First of all, thanks for all the invaluable help.
My battery has a negligible stand-by drain, but only lasts a bit more than an hour of a very light use. I'm gonna pronounce the battery dead, and indeed already ordered a replacement from AliExpress.
While I'm in the tablet's guts, I'd like to do as much good as possible. I vaguely remember reading here somewhere that it is possible to improve the WiFi reception quality by resoldering the antenna? But was unable, for the life of me, to find that thread again. Can somebody please point me in the right direction?
I am a fair hand at soldering, but after hearing all the dire warnings about "burning out the motherboard", I thought I'd go safe, and bought a "soldering glue": it's a carbon-based superglue-like substance that transmits current very well, and does not require soldering. I tried it while reassembling my bass guitar, and it seems to work very well. Just FYI...
So, how 'bout that antenna?..
Thanks in advance, appreciate it!
Doc
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