yashsingh1/xdaforums huggingface dataset:
[Galaxy S 4 General] primary_lotus:
Hey, i brought my S4 i9505 2 days ago and my first full charge wasnt that much of a charge, had to go to work erlier and took it with a charge of 5 to 6 hours. Normally i play alot on my android devices but this seems alot worse then any i had.

Here is my result after a 7 hours charge

[image]http://dl.xda-developers.com/attachdl/96d5f1c3f02bdbf51f135b6c37197115/51b73f8b/2/0/3/4/7/7/8/Screenshot_2013-06-11-16-17-43.jpg[/image]

Please tell me if i screw up and if i need another battery "more powerfull then 2600 mAh battery if exists"

Thx in advance.
[Galaxy S 4 General] Trueray:
This is what I got. Stock battery with stock android with touchwiz. Auto brightness on at 50%. All features disabled except for air view. Power save option is off I never use it.

Sent from my GT-I9500
[Galaxy S 4 General] POLO_i780:
My I9500:

Screen on time:
[Galaxy S 4 General] ojstagg93:
I am getting a significant amount of device idle and looking at the BBS nothing seems out of order really. overnight my s4 went from 39% to 28% so confused. What should I try?
[Galaxy S 4 General] benni_1994:
I've installed juicedefender and I left my phone with 99% before i went to sleep. 10 hours later it was at 96%. Pretty good so far... i will test it for a longer period and report then again.
[Galaxy S 4 General] ojstagg93:
Ahh interesting I thought from what I heard from other threads etc that juice defender was a sort of placebo effect and in actual fact it didn't do much at all. EIther way I will give it a shot ::laugh:
[Galaxy S 4 General] benni_1994:
I've heard the same but i want to test it and compare it to the battery life i had before installing it :)
[Galaxy S 4 General] Dan-SRi:
My i9505 was playing up a lot (freezing, taking ages to send sms, not registering sms as read and battery life lasting like 6 hours) so i restored it and done from 100% down to 1% and i got this. Pretty happy with it to be honest.
[Galaxy S 4 General] somebully:
For me brightness level doesnt seem to impact much. I "only" get like 4 hours screen time regardless. Heavy usage over 9 hours going 100 to 3%.
[Galaxy S 4 General] megagodx:
Snapdragon 600 variant; Stock battery, stock kernel, custom ROM, switching between auto and full brightness, mostly web browsing, light gaming and video viewing.
[Galaxy S 4 General] frrlod:
You guys seem to have pretty good battery lives.

Mine: 27% left after 22 hours, 2:40 screen time. pretty low brightness, sync off. everything is default.

Where does data (internet) battery consumption show up?
[Galaxy S 4 General] megagodx:
Check for wakelocks. BBS would be a good application for that. Also, even if your sync settings are off, background processes or cache processes from running apps or bloatware pre-installed can be draining your battery life. Also, consider the type of wall paper you use, the type of connection you have [whether it's weak or strong] - Greenify is a good application for freezing processes you don't need running in the background.
[Galaxy S 4 General] xhaniGS2:
Stock with all features on. Only gps off.
[Galaxy S 4 General] somebully:
Sick how you guys get 6h.. GT-I9505 stock everything, 4 hours screen time, everything turned off
[Galaxy S 4 General] chavxxx:
Updated mine to MEA Version. I noticed a good improvement on the battery life. I can now easily get 5-6 hours screen time.

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

iPhone 4
[Galaxy S 4 General] najaboy:
Device idle means just what the name implies. The device is sitting idle and only consuming a nominal amount of power.
[Galaxy S 4 General] Pramod9964:
What is the point of having a battery in galaxy S4 if all the cool features are switched oFF?
[Galaxy S 4 General] Xphome:
Because some of us doesn't need everything on all the time. I almost never need 4G/3G for example, EDGE has good coverage here and is fast enough to check twitter and receive emails. I have no use for NFC at the moment so that is also off. I only have wifi turned on when I'm going to use it. GPS I leave on but that is also something that most people don't use all the time.
[Galaxy S 4 General] ojstagg93:
Ah thankyou for the clarification I thought it meant the phone was doing nothing but still using the battery a lot dont kniow why but thats what i thought:D
[Galaxy S 4 General] mssaleh:
A couple of Screenshots

Here is my battery like screen shots. Using Auto Brightness +3 and All Power Saving toggles. 2G+3G+WiFi depending on the place, WiFi sleep policy (Always). Moderate use of web, music, videos, social, phone calls, sms, navigation and camera, with NO GAMING.
[Galaxy S 4 General] najaboy:
Is not necessarily that it was using a lot. It just means that nothing was going on. Think of it as beingakin to process idle in Windows Task Manager. Everything must add up to around 100. If device idle is showing high on the list, that's actually a good thing.
[Galaxy S 4 General] akarshfrevr:
im getting 6 hrs max with minimal usage..android os uses 60% of my battery..im just scratching my head ..dont no why its consuming so much...any help?
[Galaxy S 4 General] Xphome:
I've had problems with Android OS using battery too, a reboot fixes it (temporarly).
[Galaxy S 4 General] Apoxx:
I have no clue how you guys get so much screen on time. I got my S4 yesterday, and after charging it fully, it's now at 50% with 56min of screen on time and 7 hours of standby (I was surfing the web on wifi).

Auto brightness, and wifi enabled, almost a clean phone.
[Galaxy S 4 General] Ausboy 2011:
Debloat and flash adam kernel ;)
[Galaxy S 4 General] akarshfrevr:
I tried it ....it wont work every time. sometimes it does ...sometimes android os takes less than 10% ....at that time I get one full day with moderate use .....
[Galaxy S 4 General] SilentEYE:
2G network. MEA Rom. 3 email accounts. Whatsapp. No gaming. flight mode from 01-06 am
[Galaxy S 4 General] mssaleh:
I never get less than 3 hrs screen on time no matter of my usage indoor, although I don't play games. I haven't updated yet to the latest Rom and I don't root or modify my phone. I only adjust the settings (below) and remove+disable Samsung widgets and a couple of apps (chat on, a couple of games, widgets, Google play music)

My preferred settings:

Network: 2G indoor, 3G outdoor

WiFi: on indoor, off outdoor (sleep policy: always)

Bluetooth: only in car

NFC: always on

Display: auto brightness+2, Adapt display, Auto adjust screen tone, auto rotate off, smart stay on, air view on, air gesture on

Power saving: all saving features on

Sound: sound+vibrate but haptic feedback off

Voice control off

Sync: only auto sync gmail, email, google keep, contacts, calendar, photos. All other accounts and apps sync disabled.

Location services: GPS off indoor, on outdoor, disable "report my location"

Security: remote controls on

Number of installed apps: 74
[Galaxy S 4 General] zujko:
What you think about this?

i9505 stock rom MEA. Some app freez with TB..

Temp. battery is 33c, when surfing on dolphin browser..
[Galaxy S 4 General] zetlaw:
I think you put your device to never sleep. And that how you got to 3.5 hrs screen time on 50 precent battery.

Thats false in my opinion because that's not reflect anything.
[Galaxy S 4 General] adrian3:
I9505, stock MEA rooted, MEA radio. Power saving mode (CPU and Screen) on, that's it.
[Galaxy S 4 General] chavxxx:
Wow... I will I could get a screen time like that. I just flashed mine with a deoxed slim MEA. Then installed a couple of Samsung apps that I can use. Will test it today.

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

iPhone 4
[Galaxy S 4 General] anewday:
Why don't more people post screenshots with 4g on instead of wifi? Wifi usage is not a realistic usage test imo.
[Galaxy S 4 General] adrian3:
Don't know about the rest but I leave WiFi on whilst at home and turn it off when I'm not. Seems pretty realistic..
[Galaxy S 4 General] chavxxx:
For me, wifi and data are always on. So that when at home, I use wifi and when I leave it automatically transfers to data.

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

iPhone 4
[Galaxy S 4 General] Xphome:
I never have 4G on because it drains battery a lot.
[Galaxy S 4 General] androidsoccer:
My usage :(
[Galaxy S 4 General] chavxxx:
I found out that the culprit behind my fast battery drain was Samsung's bloatware and apps like facebook, viber, wechat, tango, etc. I tested my S4 without these apps installed and to my surprise, I can easily go 7 hours plus of screen time. Here's mine using djemby's prerooted and deodexed MEA Rom, restored a couple of samsung stock apps that I use then installed social apps.
[Galaxy S 4 General] desz:
i9500 stock rom I9500XXUAMDK
[Galaxy S 4 General] somebully:
[MENTION=4172983]chavxxx[/MENTION] I dont see how it's possible to go from 4h screen time to 7h just by changing rom.. screen power usage should be the same regardless. It's not like facebook etc drains from the screen.
[Galaxy S 4 General] chavxxx:
I used an deodexed rom so no bloatwares and stuff. Just a clean rom. And yes, facebook, viber, etc drains the battery by running in the background and connects to the internet to check for updates...

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] Tvercetti28:
My battery time with my GT-I9500 is about 1 day and 20 hours and i get around between 4-5 hours screen on time with all sensors off, using wifi, browsing alot, some 3g and around 30 m of gaming.
[Galaxy S 4 General] qazmed:
only really how lousy i get 36 to 39 on my i9505 with air gesture and air view and nfc and smart beam and smart stay and smart scroll with screen on for 5-6 hours

i9500 is a real drain on battery usage hope they get a fix for that in coming updates
[Galaxy S 4 General] fazdnoah:
Seriously guys??!!

Mine lasted 18-24hours with only 2-3hrs sot

How u guys manage to get >5hrs sot???

Btw i just wiped my internal and external storage

With no content at all, mediaserver still running like 1-2hrs

Any workaround?
[Galaxy S 4 General] XVI™:
I get about 12 hrs of battery life with screen time of about 4 hours, never have Wifi on, everything else on.

If I'm spending 4 hrs a day or more on my phone, I need to get a life
[Galaxy S 4 General] galeej:
Which rom and kernel using? Here is mine..

Sent from my i9505 using Wicked v4
[Galaxy S 4 General] rtoh:
Are u on stock ROM and Kernel? Looks pretty good.
[Galaxy S 4 General] galeej:
i am using Wicked V4 with Adam kernel. what about yours?
[Galaxy S 4 General] rtoh:
I am using Wanam atm with stock kernel. Waiting for Google S4 version to be out. :D
[Galaxy S 4 General] omniwolf:
great deep sleep, high drain

I've been noticing something strange recently - I have been getting excellent deep sleep over night, but my battery is draining much more than it should (from experience with the S2 and S3).

I'll get 92-95% deep sleep, but i'll still lose abou 2.5% battery per hour, so over an 8 hour period with about a minute of screen on time, i'll lose 20% battery. On the S3 if I got that level of deep sleep it'd be probably at 0.9-1% per hour - 7-8% over 8 hours.

I'm on Wanamlite Adam kernel. have just flashed KT-SGS4, will see if it makes any difference tonight.
[Galaxy S 4 General] elantech:
mobile battery usage

Hi,

Every smart phones battery depends on users. If continuous net is working in smart phones, it drop in half day and if not it can work full days. Some also in screen because HD screen also drop down the battery.
[Galaxy S 4 General] plasmastate:
What the hell? How have you been using your phone? Most activities you have been doin? Thats some awesome screen on time
[Galaxy S 4 General] xhaniGS2:
No 3g, only wifi, no powersaving, i use facebook viber xda, browser, sometimes game for 20-30 min, light usage for music.

Here are screen shot for now. Btw flashed yesterday with mf5
[Galaxy S 4 General] usama492:
Which rom?

brightness level?

power saver on?
[Galaxy S 4 General] xhaniGS2:
Stock rom

Stock kernel

Powesaving off

Airview on

Autosync on
[Galaxy S 4 General] frrlod:
Correct me if I'm wrong, but stock kernel varies for each country/region? That would explain some of the stuff going on here.
[Galaxy S 4 General] gadjet0:
I'm really impressed with my battery life.

Data on only when needed , two or three phone calls a couple of email checks during the day and only 10% used, the same usage with my S2 would of used 25% easy.
[Galaxy S 4 General] norml:
Unrealistic stats, but still postable. Was AFK from my phone for like 4/5 days, this is the result. This is before I flashed Wanam, was on stock MDL, debloated, deodexed rom and KT-SGS4 kernal.
[Galaxy S 4 General] anewday:
What does power saving mode do exactly?

Sent from my Galaxy S4 Verizon
[Galaxy S 4 General] Zanr Zij:
S4 battery life is not good as it should be. My Note 2 about 160-180% better than S4. This problem cause me keep Note 2 :). Used S4 for 2 weeks! My Note 2 also smoother than S4!

Sent from Oppo Find 5@AndroidVietnam
[Galaxy S 4 General] noideaforusername:
You forgot that it has higher capacity battery. And 600mAh really makes a difference.
[Galaxy S 4 General] frrlod:
Underclocks processor, reduces brightness and reduces that little nudge when you click your return/menu batteries on the phone itself (that thing costs battery).
[Galaxy S 4 General] Zanr Zij:
3100mAh/2600mAh ~ 120%.

How do you think about this?

Samsung said about S4 power management:

- Better screen

- Better CPU/GPU

Result: I said before :).
[Galaxy S 4 General] noideaforusername:
Again, the 500mAh makes more than just 120% difference. You can see it when you look at the difference between the i9505 and the HTC one.
[Galaxy S 4 General] Zanr Zij:
S4 vs One:

Real life: One better about battery life with moderate/heavy usage. One also smoother.

You said 500mAh, 600mAh but you have not yet explain why? Prove your point of view plz!
[Galaxy S 4 General] najaboy:
Disregard. Tapatalk 4 led me astray.
[Galaxy S 4 General] usama492:
Is it safe to do charge cycles on the s4 octa?

Like draining to 0% then charging to 100% and repeating.

Btw I'm on the latest MF5 build
[Galaxy S 4 General] najaboy:
That will only shorten the battery's lifespan. The advice to cycle a new battery is based on both not understanding lithium ion battery tech and a cum hoc logical fallacy.
[Galaxy S 4 General] kivanov:
1. Data non stop on, no WIFI

2. A lot of voice call

3. Sync Viber Mobile with Viber PC
[Galaxy S 4 General] noideaforusername:
Please give me an even close result from htc one on stock:

Sent from the octa planet in the fourth galaxy
[Galaxy S 4 General] usama492:
So what do you recommend which pattern to follow of charging to keep my battery healthy and improve backup?

---------- Post added at 07:56 PM ---------- Previous post was at 07:54 PM ----------

No comparison.

I used One X+ horrible battery life. S2's 1650mAh was better:P

Samsung has power management due to their own CPU.

we just need the attention of Developers and the Octa phone will rule all :P
[Galaxy S 4 General] najaboy:
Avoid complete disharge/charge cycles as they exponentially shorten the battery's lifespan. The exception to this is that if you feel compelled to do so, a single complete cycle once every few months can be done to set the battery's charge and discharge flags.

There's a lot of misinformation that gets passed around regarding lithium ion batteries. An oft repeated wives' tale is that brand new batteries need to be conditioned prior to use. This is patently false.

If you'd like a good intro to lithium ion batteries and best practices, I'd recommend checking out www.batteryuniversity.com
[Galaxy S 4 General] msavic6:
I honestly wouldn't even worry about it, a new oem replacement battery is like $30 and is bound to last you a year.
[Galaxy S 4 General] ivanrcks95:
Heres mine
[Galaxy S 4 General] adrian3:
Timestamped 23:59: Stock MEA see my previous post (posted for comparison)

Timestamped 23:19: Janjan's 4.2.2 Google Edition rom, with ausdim's v2 GE kernel (29 Jun), underclocked to

1566

MHz

The deterioration (despite being on WiFi almost 100% of the time) in battery life is probably due to the absence of power saving mode

Also noticed while using MX player that HW mode isn't available to me.. coincidence?

edit: both readings taken at 15%
[Galaxy S 4 General] siddhartha51997:
Hi
[Galaxy S 4 General] megagodx:
A new ROM and some new results!

Info: AT&T variant/XXUBMF8 ROM running atop UCUAMDL base/Stock Kernal

Conditions: Wi-Fi, 4G LTE running (for over half the battery life), live wallpaper, Full Brightness (from start to finish)

Tried to test the battery life to the peak of its limits by using only 4G most of the time and having the display cranked up to maximum brightness at all times. Suffice to say, I'm satisfied with my results.
[Galaxy S 4 General] Zanr Zij:
I don't use One right now, only Note 2 and Find 5. If need I will test it on my friend'.

About your result: plz give more infor by screenshots. How about your brightness, connection, app sucks from GSam. What did you do on "screen on" time ?

Sent from Oppo Find 5@AndroidVietnam
[Galaxy S 4 General] videtonator:
So, how is that possible? 30 seconds CPU total, less than 3 minutes stay awake, and responsible for almost half of the battery usage.
[Galaxy S 4 General] Al Gore:
Mine, 9500
[Galaxy S 4 General] plasmastate:
Wow.
[Galaxy S 4 General] Hack Xda:
I get 7 hours constant play 8 ball pool and listen to songs then use youtube and the Internet play othrr games
[Galaxy S 4 General] iamnotkurtcobain:
Lol... Switch to cm ;)

Gesendet von meinem GT-I9505 mit Tapatalk 2
[Galaxy S 4 General] Planktron:
Not too bad here
[Galaxy S 4 General] MrSpiceGuy:
Is there a fix for the high drain of google services?
[Galaxy S 4 General] noideaforusername:
Disable it.
[Galaxy S 4 General] Planktron:
Turn off google now and automatic location updates in maps :thumbup:
[Galaxy S 4 General] Kazzor7492:
This is my battery usage with Jamals Google Edition ROM v6.
[Galaxy S 4 General] chavxxx:
Mine using Omega v7 with Stock MF8 Kernel. Almost nonstop use just to test the ROM:

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] fischerben:
How can you o ly use it 2 hours on 3 days :D
[Galaxy S 4 General] fischerben:
Mine is become pretty good know after some tweaking..
[Galaxy S 4 General] Pho3nX:
S4-i9505 LTE 16Go / 32Go SDCard

I9505_Omega_v7.0_XXUBMF8

+ philz_touch_5.07.6-i9505

+ v3-Google-edition-ausdim-Kernel-GT-I9505--20130630220221-CWM

+ Cleaner Master 3.6.0.271 (with AutoKiller RAM)
[Galaxy S 4 General] fischerben:
That was what I could get of battery life, just a little more juice left.. Pretty satisfied with it
[Galaxy S 4 General] ejpenha:
GE V1 By JanJan
[Galaxy S 4 General] andymihail:
Omega Rom v. 7, Adam Kernel 1.4
[Galaxy S 4 General] negrobembon:
i manage to get over 3 hours of screen time even though my phone is always awake because of fast dormancy but i get the 6 and a half hours on wifi
[Galaxy S 4 General] Skipjacks:
Not only is there a fix, but you can do it without losing the Google Play store.

http://xdaforums.com/showthread.php?p=43424843

Sent from your phone. You should be careful where you leave that thing.
[Galaxy S 4 General] msavic6:
If you have updated to the newest Google Maps, location reporting is turned on automatically so it may be causing your phone to stay awake.
[Galaxy S 4 General] skivnit:
Wanam +Perseus kernel
[Galaxy S 4 General] XxmentxX:
Very good..

inviato dal mio S4 nero
[Galaxy S 4 General] GalaxyS49505:
Stock MF8+Stock Kernel.I9505.
[Galaxy S 4 General] edorner:
Galaxy S4 VS Galaxy S3 + 3000mAh

Which one do you think is better in terms of battery life:

Galaxy S3 (i9300) + official 3000mAh extended battery OR Galaxy S4 (i9505) + stock 2600mAh battery (with latest official ROMs)?
[Galaxy S 4 General] aliendna99:
I9505

Battery king MF8 base + MF8 kernel + MF8 modem

I streamed radio for 2.5h i don't think this is good at all :(

Phone 3 days old third battery cycle
[Galaxy S 4 General] skivnit:
That's bad very bad

Swyped from another galaxy
[Galaxy S 4 General] aliendna99:
Yes just 3h radio stream (just 32kbit as well) and almost dead :(

I think phone not very good life with radio stream very bad my sgs2 could stream for a lot more :((( :( :(
[Galaxy S 4 General] FireWall123:
Brightness : auto +3

All smart features are on , except smart scroll .

Sync is on all the time, no WiFi at all.

Am on Omega v10 , stock kernel , modem is MDK.

Used greenify.

usage : FPse for 1h , rest is tapatalking, whatsapp , YouTube and 1h of music (poweramp)
[Galaxy S 4 General] szymon247:
Well, that's mine after an average day of work. I wanted to do it right but I can hardly get it below 70% after a whole day and I always charge it back when I get back home.

The 9 hour period included about 40 minutes of phone calls and ~35 minutes of Chrome browsing & Facebook and text messaging.

I'm very satisfied with its battery life. The first day I couldn't get the battery to go below 50%, despite playing with it heavily.
[Galaxy S 4 General] Shebee:
Here's mine.

Rooted stock deodexed rom, nothing fancy.
[Galaxy S 4 General] chavxxx:
I assume you have a i9500 variant right? Because you are using perseus.

I think my theory of having a lot of network dependent apps like social network apps, viber, tango, twitter, fb, etc. Can really drain our batteries faster. Because those apps always check or connects to their servers for updates even on idle mode.

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] chavxxx:
SGS4 I9505 using Battery King v4.8 rom and the latest KT KERNEL:

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] anewday:
What brightness?

Sent from my Galaxy S4 Verizon
[Galaxy S 4 General] LeWZ:
I've been able to keep good battery life (80% by the end of the day with basic usage) with omega's 4.3 android custom rom along with idle manager apk that shuts wi-fi and network data when the phone is inactive.
[Galaxy S 4 General] abo965:
S4 Original, all stock

S4 I9505, All original but very low usage.
[Galaxy S 4 General] offdotba:
Omega rom v8 , faux kernel , -50mV
[Galaxy S 4 General] chavxxx:
Auto with the slider down to the lowest

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] anewday:
Does auto use more battery?

Sent from my Galaxy S4 Verizon
[Galaxy S 4 General] chavxxx:
Don't know. I just use it

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4
[Galaxy S 4 General] mssaleh:
I've so many screenshots with everything from zero to hero. This thread is a bit confusing as it is. I wish someone with enough time and knowledge to use all these valuable feedback and experiments from users to compile a guide for both GS4 versions.
[Galaxy S 4 General] ejpenha:
The last 4.3 leak ..build July 8.
[Galaxy S 4 General] iamnotkurtcobain:
It would be a lot better if you didn't use chrome. Your google services are too high too.

Gesendet von meinem GT-I9505 mit Tapatalk 2
[Galaxy S 4 General] ejpenha:
Yeah...there is something strange about google services on this build.
[Galaxy S 4 General] beston94:
Off-topic:

This may seem weird and on some level disturbing, but could you please change your avatar? I can't really explain it, but just seeing the avatar makes me want to punch something :/ An animal, a face, who knows..

On-topic:

Nice battery :D Maybe I should go back to stock ^^
[Galaxy S 4 General] BuT_TeR:
why me ?? :(

I don't think its normal. ....
[Galaxy S 4 General] -Zork-:
With broodrom aosp r_2

Third cycles

Enviado desde mi GT-I9505G usando Tapatalk 2
[Galaxy S 4 General] chavxxx:
Anyone here using Wanamlite? Which kernel is in best partner with this rom? Adam or KT? In terms of battery life.

Devices:

Samsung Galaxy S4 i9505

Samsung Galaxy Note II N7100

Motorola Droid Razr XT910

Apple iPhone 4