[Samsung Epic 4G Touch] Spark91:
It's all not copy pasted, it's from self experience.

Wiping data factory reset, dalvik cache, and cache pretty much explains itself.

But most recoveries like TWRP and CWM doesn't wipe the preload folder when ever

you're flashing roms.

TDunham's JB Wipe all X2 script has the preload wipe with in it.

ontop of that, even when you're wiping it once, it's never a sure thing that all files will be wiped.

Wiping once without using tdunham's script is do-able. But making sure

your phone runs stable after full clean flash installation when you completely wipe everything

twice or 3 times is necessary and even recommended in most of the rom threads.

That's why if you've done all the proceeded recommendations from the flashing instructions and still have

bugs after a full clean flash, then you can start log recording errors and send them to devs to see

what's wrong and whether or not to see if a bad download is a problem, your phone is the problem

or a confliction between certain applications when they're being ran etc.

And pulling the battery out to put it back in after 10 minute's is just a quick calibration for the new flashed rom.

and doing 2 full complete drains and then a new battery calibrate after should fix the issue with wrong battery %'s shown.

Because I've had issues with the phone being on certain percentages for a very long time and when i reboot

it ends up being like 10 or 20% lower then what it shows.

---------- Post added at 10:24 AM ---------- Previous post was at 10:02 AM ----------

@ nim6us

It's very hard for those being frustrated when trying to tweak their phone or have a some what best

battery + performance for their devices when they're new to this types of stuff. I myself had the same issues

and asking + searching helped out alot.

The E4GT, being a dual 1.2 GHZ with 700 MB Ram

really sucks when it comes to that because of the background apps and how much ram each

app uses ( Plus Stock TW JB having almost 40-70 background processes on when you're unrooted

and can't actually turn them off is a pain in the a**.

Seeing you being on a JB based rom now, then all you need to do is to flash one script and

you don't have to worry about battery drain + low performance.

ComaDose v1.5 script for battery life + performance is great for any TW based rom that's compatible

with that tweak.

You can find it on the Android Development section for this device.

Using PegasusQ governor and NOOP or SIO Schedule.

Setting the phone's CPU Speed for

Min 200

Max 800 or 1000.

When multitasking it's kinda skippy and laggy, So make sure Force GPU Rendering ( Permanent after checked )

and Disable HW overlays ( Off when device reboots ) is checked in the developers option to help

with the frameskipping and device lagging when switching between apps or going to home screen or

transitioning screen from left to right.

Optional launchers to use ( If you DON'T want your accuweather widget ) that doesn't take up a lot of

ram as well are Nova Launcher, Holo Launcher ( ICS 4.0.4 ) / Holo Launcher HD ( JB 4.x.x ).

There's a launcher ported for all devices that i really like to use because i rarely see lag for screen transitioning

is the LG Optimus UI 3 Launcher. It doesn't have a lot of options, but if you're just looking for a normal screen 4 x 4.

and speed with no frameskip or lag, that's the launcher. Or searched for a TW Home Launcher that's optimized

for both speed and lesser ram usage, essentially a hacked stock launcher with 4x4 4x5 5x5 6x6, modded app drawer.