1.
2.
3.
4.

Give them IMEI no, they can check SME unit or not

I bought my 2nd hand Note2 this way.

1) Get IMEI no from seller
2) Call CS to confirm SME set
3) Once confirm, during COD double check the IMEI is correct

for new phones, i assume can do similar things but never tried

1.Photography: Instagram, Plixir, Line Camera , Adobe Photoshop express

2.Games: Zenonia Series., NFS series, Temple Run Series, and etc

3.Social... u guys know it

4.Tweak-a-lot [Some of them need roots ]
Kernel Controller, PIMP MY ROM[Custom Rom NEEDED!!], No-Frills CPU Controller, LAGFIX premium,DSLR premium by CF, Greenify [req.Xposed Framework]

5.Themes and Widgets: Beautiful Widgets, Apex , S4 apex stuff ] , Next , Nova ,UCCW and ETC

6.Music:Kuwo (chinese apps) ,Spotify , SoundHound and etc

7.Texting: Swiftkey 3 pro, GoogleIME and Sougou (for chinese users)

8.Storage: Helium[Backup phones and apps w/o ROOT],Google Drive, DropBox, MediaFire,TiBU; Titanium Backup[Req. Root]

9.Video Player:MX player,VLC beta

10.Office:Polaris, Microsoft Office*, QuickOffice PRO

11.notes: Evernote

12.Chats:Whatapps, LINE, Kakao, Talkbox, IMO messenger

13.Battery: Wakelock Detector, BetterBatteryStats

14.Framework: 3mins , Xposed , Simplistics

1.SAMSUNG GALAXY S4 WITH 5 INCH FULL HD SUPER AMOLED DISPLAY MORE INFOS AND DETAILS

-thanks to wkkm007
2. S4 have 2 models variants , so need u guys read it
-Thanks to uncle benny888 for explain

3.Battrey Endurance

thanks to karlbum
4.OVERHEATING N TIPS?

Thanks to our staff, Baronic
5.HOW TO SCREENSHOT?
JayceeOoi
6.Manual Guide for S4

Battery Frequently Asked Questions (FAQs)
First of all, it should be noted that most myths about mobile phone battery care originated from the days where nickel-cadmium (NiCad) based batteries were common years ago but the overwhelming majority of smartphone batteries used nowadays are lithium ion based smart batteries which doesn’t require these treatments. I’ve seen these questions asked again and again multiple times over multiple threads and I’ve decided to compile some information all over the internet to answer these questions.

Q: I heard that you need to do an initial charge of 8 hours before first use of the battery, is this true?
A: There is no need to charge a Lithium ion battery to 100% or charge for long hours (priming), this doesn't work for li-ion chemistry, before using your device. It will not affect battery life in anyway. In fact, you can start using most modern smartphone batteries immediately right out of the box and it won’t cause any problems to the long term life of your battery.

Q: I heard that it’s good for the battery if you often charge it to 100% and use it until it’s almost out of power before recharging again to combat battery memory effects. In other words, I heard it’s good to do full discharges of the battery before recharging. Is this true?
A: Batteries have a finite limited number of charge cycles and similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life, other than to calibrate the fuel gauge on a smart battery once in a while between a few months.
In other words, do not discharge lithium-ion too deeply. Instead, charge it frequently. Lithium-ion does not have memory problems like nickel-cadmium batteries. No deep discharges are needed for conditioning. Running a Lithium battery low all the time actually does harm it more than topping it off whenever possible. Using only 20% or 30% of the battery capacity before recharging will extend cycle life considerably. As a general rule, 5 to 10 shallow discharge cycles are equal to one full discharge cycle

Q: Somebody told me to not leave the phone connected to a charger for a long time to avoid overcharging and damaging the battery. Would that be correct?
A: In most cases of modern lithium ion batteries, this is not a problem as these smart batteries are designed to cut the current when they reach a certain charge level and will use a bit of their own power before they start charging again and since lithium ion batteries have no memory effects, this is not a problem. There is no danger of the battery being overcharged. People seem to misunderstand about this point because a lack of knowledge and also advices with other batteries for example with laptops where people are usually advised to take the lithium batteries out if it’s not going to be used for a long time. People don’t realise in that case that the risk is actually the heat coming from operation of the computer instead of overcharging.

Q: How should I store my battery if I’m not going to be using it for a while? eg. storing phone away or spare battery.
A: The worst way to store a battery is to store it fully charged in places with high temperatures. The best common way to store your smartphone battery is to store it away with power levels of between 40%-60% and in places where it’s likely to stay at a comfortable temperature.

Q: My battery is discharging unusually fast even for a smartphone with light usage, can anybody help?
A: First of all, you need to be clear on what you deem as “light usage”, if it’s not much you should go into settings and monitor your battery usage and see what apps are eating up the battery, it’s possible there are apps keeping your phone awake or syncing too often. What you can do is you can play around with the settings of the app or disable or uninstall it if you don’t want it. If you can’t find what’s wrong, try factory resetting your phone. If the problem persists, the reasonable thing to do would be to go to a service centre to get your phone checked out.
Information compiled from:
http://batteryuniversity.com/learn/
http://batteryuniversity.com/learn/article...based_batteries
http://www.buchmann.ca/faq.asp
http://forum.xda-developers.com/showthread.php?p=40566686
http://forum.xda-developers.com/showthread...897#post3846897
http://powerelectronics.com/mobile/proper-...on-battery-life

1.2 , refer V5.. :V
3.Cavino

Recovery Mode

ODIN mode aka bootloader mode

Hard Restart

1.Q:How to enable the sidebar?
A:okay, hold the return button for 10 sec, it'll popped
2.Q:Is needed always open NFC
A:Definately no, coz NFC will 'consume' ur battery w .5% per hrs
3:Q:Is Needed to Update the official stuff
A:yes, u needed
4:Q:how to swap intSD to extSD
A:u needed to root and after that swap ur any 'apps' to ur extSD aka micro SD cards!
DIY
5.Q:how to enable Developer mode?
A:go settings>about device > tap the build number approx 7x times > done
6.Volume soft like 'hell' and make you mad...
A:Volume too soft for you, well try this at your phone! - Credits to XeactorsZ from S3 Thread

6.Galaxy S4 WiFi Keeps On Dropping?
A:
7.Galaxy S4 Lags
A:
8.Galaxy S4 Home Button Lag !!! ATTENTION!
A:
9.Apps that can safety to FREEZE at your S4
A:
10.What LTE Catergories that can used on our Country
A.-reconstruction-

*#06# – IMEI number

*#0*# – Enter the service menu on newer phones like Galaxy S III

*#*#4636#*#* – Phone information, usage statistics and battery

*#*#34971539#*#* – Detailed camera information

*#*#273282*255*663282*#*#* – Immediate backup of all media files

*#*#197328640#*#* – Enable test mode for service

*#*#232339#*#* – Wireless LAN tests

*#*#0842#*#* – Backlight/vibration test

*#*#2664#*#* – Test the touchscreen

*#*#1111#*#* – FTA software version (1234 in the same code will give PDA and firmware version)

*#12580*369# – Software and hardware info

*#9090# – Diagnostic configuration

*#872564# – USB logging control

*#9900# – System dump mode

*#301279# – HSDPA/HSUPA Control Menu

*#7465625# – View phone lock status

*#*#7780#*#* – Reset the /data partition to factory state

*2767*3855# – Format device to factory state (will delete everything on phone)

1.Q:Battery FAST Leakage?
A1:Turn off all bunch of smart stay, views, eye, and motion... (try to turn off Data and wifi)
A2:download betterbatterystat at play store to check ur battery usage
2:Network Issue?
Network
3:LTE not detected at phone NOT FOR OCTA-CORE USER!
THIS, u wanna go Maxis for replace the LTE micro sim [charge 20 bucks for Maxis users] and Celcom IS F.O.C

1.android authority
2.

1,Q:Does root valid warranty?
A:Yes, if u gonna send to SC and so far no heard any news on Samsung SC reject rooted devices to do so
please flash back everything before u go for 'ICU' for Sammy SC

2, Q:after root have any changes at the phone?
A:Yes,Kernel, CSC,Baseband,Firmware,Rest of da' Roms and Recovery [After rooted]
and except the hardwares..!

3, Q:what is root?[IMPORTANT TO READ]
A:cut the crap and i talk shortly
Root is u get the permission on the phone that u can access to your device LIKE A BOSS
and it's NEVER change your phone in other way , they 'OPENS THE DOOR' to magic.
NOTHING IS CHANGED!

4.Q:Root will bricked my phone?
A:No, the root will increase the binary counter and your Knox Flag will increased by 0x1

5. About AOSP, [Android Open Source Project], differences and Touchwiz UI by Samsung and etc
- Credits to Joytest at his N2 thread reply

6.ABOUT BootLoaders

Bad news everyone! I've been hearing more from people in places associated with Samsung, and it is becoming more likely that this KNOX status is indeed an eFuse. I might talk to some Samsung guys myself this weekend, if there's anything interesting about that, I'll let you know.

Worse than that, I've also been hearing that service center instructions are indeed that devices with this status tripped will not receive any warranty repairs. (Of course, the action they take may still depend on the service center). Their excuse is that the hardware is damaged by the owner. Seems Samsung is catching up in scumbaggery to HTC, who years ago attributed my HTC Diamond's screen damage (digitizer detached) to the installation of HSPL

To anyone in the know it is obvious that this doesn't really fly, and the eFuse blowing (is this the hardware damage?) is intentionally done by the bootloader when unsigned software is loaded. One could even argue against the legality of that under EU regulations.

Anyway, of course there's that EU regulation (1999/44/CE) that is generally interpreted so that rooting/flashing may not break hardware warranty. As I've said again and again, this may be true, and you may be legally entitled to free repairs but this doesn't necessarily mean they'll actually repair your device.

Warranty needs to be provided by the seller, not by the manufacturer. The shop will usually depend on the manufacturer's warranty, though that's really none of your business or concern - your deal is with the seller. The shop will send you (or your device) to a service center, which may not be OEM operated or owned (but licensed instead) and are furthermore under no obligation whatsoever to repair your device if they don't want to. And if their instructions say to not repair in case X, then they will not, as the OEM will not reimburse them for the parts.

The shop will just tell you that the OEM says your breakage isn't covered by the warranty, and that will be that. You will have to slap said shop around a bit with EU regulations, and possibly take them to court before they will repair/replace your device. Even if you take them to court, and if you win (I've not seen or heard from such a case winning yet), you'd just be hurting the shop, it has no effect on the OEM, and you've probably spent a lot more time and money than you would've just buying a new device.

Only the OEM wins in this scenario, which is pretty sad, really.

Of course, I am not a lawyer, so take all this with a grain of salt
From Chainfire's G+

- power off your phone.
- press three button combo (vol down + home + power button)
- once in download mode....press vol up..
- once in Odin mode...see if there a Knox Warranty Void 0x1..or not.?
- if got...meant your phone have Knox new bootloader already.
- if don't have the 0x0...meant your phone is on older non-Knox bootloader.


-Credits to waveweaver

ROOT for I9500
1.using adam kernel to flash via ODIN
2.CF- DONE AUTO ROOT FOR Octa-Core
3.Cofface

ROOT FOR I9505
1.Adam Kernel for I9505 and flash it via ODIN
2.AUTOROOT by Chainfire

For I9500, Octa Core aka 3G




For I9505, LTE

OCTA

LTE

TWRP 2.5 For I9500
TWRP 2.6 For I9505
CWM v6 Phliz Edition For I9500*
CWM v6.0.4.4 non touch for I9500
CWM v6 Philz Edition for I9505*
CWM V6.0.3.5 Touch/Non-touch For 9505*
CWM v6 Touch For I9500*
Odin Flash tools {V3.04 or v {1.85 is recommended by Benny888}
*- Clockwork Mod by Koush

1.Spigen aka SGP Casing series
2.OtterBox Casing Series
3.Case Mate S4
4.Rock, just found this only..
5.Nillkin
6.Mercury... [gonna wait]
7.INHUWE?
8.Belkin, JUST look for S4 ...!
9.Morcan (Get from Senheng/SenQ)

1.krystal Liquid (1 yr , 1 time/ obtained at Garage sales)
2.Belkin Private protector
3.Anti-Shock Screen

1.-By ahodil

1.GSMarena
2.Phone Review
3TechRadar
4.Phone Arena
5.T3
6.download.net UK
7.Thanks to TehWateva for the review
8.The Verge
9.Winniekepala, Exynos variant
10.Engadget
11.Slashgear

So, as we had the Octa-Core (GT-I9500) variant of the Galaxy S4, we decided to do some benchmarks. We are just BLOWN away from the results we got. The Galaxy S4 crushed every other device, even the HTC One and the Sony XPERIA Z. We used Antutu and Quadrant as our benchmark tools. The device received a score of 27417 on Antutu and 12726 on Quadrant.


Our full review of the Galaxy S4 will come at the end of April, so stay tuned for that!

10/9-added the LTE catergory at FAQ sections
=== new months entry..
8/31-Majority added and edit on at roms,guides and mods and residential section
30/8-new section, Alerted Case at accessories section!
=================================> TS a bit fever...
15/8-added some FAQ stuffs
14/8- added the Sammy Repair Pro at Residence
7/8 -added on the clocking on Exynos aka 3G at guides and mods
4/08 -Majors edits and added on youtube video at some post 1~7/8

25/7- added S4 parts and the hardware how-to
23/7-added DG LTE pack on telco plan section!
19/7- added UserU at residents and some edit at post
9/07-added ARHD n edited from XDA's Google S4 edtion at Custom Rom, LTE sections
29/06- added Samsung Leaked GOOGLE S4 Edition at Custom roms , LTE section
28/06 - added x132755 and sunnychai99 at phone reliable seller, and added Volume soft and Secret Codes at FAQ section

24/06- added the recognized units and edit some stuff at post 1
23/06- added Network issue, edit at guides sections
22/06 - added foxhound rom and Wanamlite at Custom ROM, LTE section
19/06 - added kernel wake at issue!
18/06 - added WinnieKepala review
09/06 - minor 'patching' , which is issue,basics and FAQ
and thanks let me think the ideas

-Compared to its predecessor, Adreno 305

-FlexRender is designed to help the Adreno GPU boost speed and save power by dynamically switching between drawing pixels in direct or deferred rendering mode

-Available only in select processors

Snapdragon 600 processors include the following part numbers: 8064T and 8064M

In Android 4.3, Android begins supporting Security-Enhanced Linux (SELinux), a tool for applying access control policies. SELinux enhances Android security, and contributions to it have been made by a number of companies and organizations; all Android code and contributors are publicly available for review on this same site source.android.com. With SELinux, Android can better control access to application data and system logs, reduce the effects of malicious software, and protect users from potential flaws in mobile code.

In this release, Android includes SELinux in permissive mode and a corresponding security policy that works by default across the Android Open Source Project. In permissive mode, no actions are prevented. Instead, all potential violations are logged by the kernel to dmesg. This allows Android and Android device manufacturers to gather information about errors so they may refine their software and SELinux policies before enforcing them.

Background
Used properly, SELinux greatly limits the potential damage of compromised machines and accounts. When you adopt SELinux, you instill a structure by which software runs at only the minimum privilege level. This mitigates the effects of attacks and reduces the likelihood of errant processes overwriting or even transmitting data.

SELinux provides a mandatory access control (MAC) umbrella over traditional discretionary access control (DAC) environments. For instance, software must typically run as the root user account to write to raw block devices. In a traditional DAC-based Linux environment, if the root user becomes compromised that user can write to every raw block device. However, SELinux can be used to label these devices so the user role assigned the root privilege can write to only those specified in the associated policy. In this way, root cannot overwrite data and system settings outside of the specific raw block device.

See the Use Cases section for more examples of threats and ways to address them with SELinux.

The project’s official description reads “SELinux is a security enhancement to Linux which allows users and administrators more control over access control.”

SELinux is a set of Open sourced and peer reviewed changes to the core Android Software stack to help prevent apps from performing malicious activities. This is done by establishing a set of policies that act as mandatory access controls (MAC). Depending on the policy, it can do things such as prevent apps from running or accessing specific data, to preventing root access altogether.

SELinux has wide-scale adoption throughout the linux landscape, with Fedora, Red Hat and others incorporating policies to better the system security. The default policies are usually written per distribution, by their maintainers – we have begun this process for CyanogenMod.

We will be working on this policy creation in parallel to Google’s own policies for Android, which we believe will be released with the Android 4.3 source; effectively getting us ahead of the eventual 4.3 source release. As this process is open source, policy creation and suggestions will be handled via our gerrit instance....

SELINUX can take one of these three values:
>enforcing - SELinux security policy is enforced.
>permissive - SELinux prints warnings instead of enforcing.
>disabled - No SELinux policy is loaded.

SIRIM is Malaysia certification of wireless products. You will never ever see such a Sirim sticker on imported products unless the importer stick onto it.
Custom will normally not open unless is suspicious. If the delivery docs declared as phone high chance it will be holdup at custom.
Than you need to apply Sirim permit at nearest Sirim center. You need pay only RM100 for it n with it you can bring in up to 3 phones same model
You need to fill up 3 forms at Sirim n provide following:
- courier or arrival notice
- purchase detail ( email will do) of phone
- printout from web specs of phone

You can normally get the permit within an hour
Than show this permit to custom to clear out phone
There is no other duty/taxes on mobile phones import into Malaysia

From GURU Benny888 from Nexus 5 post