1-how the repartition is done, is it part of the ROM it self?
P780_LiFe_v02_ReParted_Data_aroma.zip is not a rom, it is a program written by Russian to repartition P780 phone internal storage. it just like CWM recovery update.zip or gapps if you use cyanogenmod before. your original rom still remain only thing will lost is the data in your build in storage so please backup your build in storage data to your external storage and set the default write to external storage after repartition it!!

2-after i flash the rom and repartition is done, if i want to recover to stock rom, I just recover by pressing the "reset" at back of phone? or what is the step to restore stock rom+unroot?
if you want to recover, you need to flash the stock rom back from needrom S110 29 June 2013 or i found the latest rom S116 28 Aug 2013
http://lenovo-forums.ru/topic/2146-romp780...1-%D0%BF%D0%BA/

After flash back stock rom it back to unroot condition again!!

I found the S115 rom but it is an OTA update (11MB) and i dont know why i cant flash in or update to S110 rom using mobile uncle CWM recovery maybe TWR can do it, but i never try!!

3-after recover to stock rom, will the partition goes back to original setup where internal storage = 2.14GB , built in storage = 1.45GB?
after flash back either rom the partition table will reset coz the EBR1 & 2 flash back to original.

4-do you experience any issue with lagging/performance issue by setting only 4.98MB in built-in storage?
Even My P770 i partition it to 3.3G and 3XXMB free on build in memory, i use it for almost 6 months never found any lagging problem even dont have a hang or restart issue like galaxy S2. coz i set the default write to External storage so the build in storage become useless i just store my mp3 song and ringtone. P780 still not yet run in live after repartition so i cant comment it now coz still under testing but so far so good even i try dual sim today.... but i think will be the same coz using stock rom didnt change anything except partition and default write location.
of coz you need a fast microSD card to have better performance. my microSD is 30MB/s.
you can also have a simulate environment to set the default write to external card use it for 1 week see got any laggy problem? only problem is custom ringtone issue.. each time you restart your phone need to set it back again coz the preparing of external storage slow when startup. so ringtone put in build in storage or use system ringtone lo!! then you find out that your build in storage become useless!!

For those want to know more about dual sim,

today try it and found out that call log indicator call from which sim is too small with a number "1" or "2" not like P770 different it by using color and name which set in sim management. for uncle like me is a bit difficult to see!!

SMS still ok coz there is a sim name display on right bottom corner but also without color. P770 got name and color without number!!

good thing is P780 got a new function that SMS and Call ringtone can be set by different sim. means sim1 & 2 can have different ringtone and sms notification.

I tested this in S116 ROM dont know the S115 ROM having the same problem?

RAM still a issue like P770 coz both using 1GB RAM but this time lenovo launcher add a cleaner function but dont forget to set white list in preference!! if not, you will found some of your program not function well after clean ram

the lenovo power is the best improvement!!! can manage and whitelist or blacklist so many things and so stable compare with juice defender i use in galaxy s2!!

This post has been edited by garytanyh: Sep 24 2013, 04:03 AM

i disabled the lenovo power and using clean master. lower memory usage.

actually i did not use any profile... i wonder how did the stamina goes after disable Lenovo Power...

new user here.

still around 12 hours screen on time. sot

welcome. enjoy your gadgets. good luck try to drain the battery

5h 18m up time,
4h 48m wireless,
2h 50m screen time
37min voice call

now still got 82%

This post has been edited by fitzhex: Sep 25 2013, 02:13 AM

i not yet buy memory card for my phone.
will class 10 differ much from class 4/class 6 card?
any opinion/sharing is appreciated

faster... class4 means 4mb/s... 10 means 10mb/s...
double the speed...

32gb class 10 around 80-100.its a good deal right now

How the gps lock time...have they fix this...lastime my p770 took a very long time to lock a gps signal..I end up give up...and abandon the gps function....the problem was in the mtk chip..weak gps signal...how was this new p780 any improvement..

This is the answers.

Can see much differ in performance?

Then I say p780 is kinda good...if only the price reduce to p770 price its gonna be wonderfull...I read somewhere they use the li-po battery which is worst in the of charge cycle time compare to traditional li-ion battery... in other word li-po battery life time is between 2-3 years max...but again by tat time you'll probably upgrade your phone already...I think tats he only the problem beside the price tag..its not cheap enuff..maybe im asking to much

I think it's cheap enough for the spec it offers, I can't think of any similar spec phone with such price tag

IPhone start use li-po since iPhone 3g... the disadvantage of li-po is don't drain ur batt to 0. If not even you can charge it but performance drop 50%...you can check with all remote plane player they know well about Li-po batt... advantage is light weight...
http://www.anqu.com/lab_74/46275_2/

Actually p780 battery can get it everywhere in China market and price cheap ( but I don't know is ori or not)... and easy to replace only 4 screw....

This post has been edited by garytanyh: Sep 25 2013, 01:50 PM

Owh..the battey is non removable..only he case can be open for sims and memory..noted..

many phone actualy use the li-po battery...iphone htc sony....maybe because its lighter and flexible shape..but deep in my heart I still feel uneasy knowing my phone gonna be dead in about 2 or 3 years...its even worst if your spend alot for a li-po power phone..I just prefer li-ion any day..and tats is why I end up with samsung...glad they still with li-ion..

This post has been edited by AndreaPirlo: Sep 25 2013, 02:05 PM

yes. easy to fix actually. but atm rare to find aftermarket parts yet. this phone still new. and even aftermarket battery up for sale, it cannot achieve 4000mah power because most of it is li ion type

anyone using miui v5 on p780?? hows the performance compared to stock lenovo??.. what recovery are u using?