Go Back   MacRumors Forums > iPhone, iPod and iPad > iPhone

Reply
 
Thread Tools Search this Thread Display Modes
Old Sep 21, 2011, 06:50 PM   #1
djr7572
macrumors regular
 
Join Date: Jun 2011
iPhone 4 -- brightness settings

Do any of you have issues with your iPhone 4 brightness? I've always left my brightness control on auto, but more often than not, the screen is either way too dim for the lighting that I'm in or the brightness is way behind in adjusting itself (often up to 5 minutes after I've moved into a darker or lighter environment). Could it be that iPhone 4 is just designed to auto-adjust it's brightness leaning more toward the dimmer side in an effort to conserve battery life, or could this actually be a problem?

I've had to turn the auto brightness off entirely and adjust it to my own liking because it doesn't seem to be doing it's job. Or it's extremely slow to do it's job. Often times it doesn't adjust at all after changing to a lighter/darker environment.

Kind of a frustrating issue ...any suggestions or feedback would be appreciated.

Thank you!
djr7572 is offline   0 Reply With Quote
Old Sep 21, 2011, 06:52 PM   #2
batting1000
macrumors 601
 
Join Date: Sep 2011
Location: Florida
That's why keeping it at about 25 to 50% with auto brightness off is ideal, imo.

Autobrightness also isn't good on battery. It is constantly using the sensor to detect the light settings so it can adjust the screen brightness.

I keep my iPod touch 4 at about 15 to 25%.
__________________
Verizon iPhone 6 (4.7") - iOS 8.1
iPad Air - iOS 8.1
Late 2012 i5 Mac mini
batting1000 is offline   0 Reply With Quote
Old Sep 21, 2011, 06:56 PM   #3
MarcBook
macrumors 6502a
 
MarcBook's Avatar
 
Join Date: Jul 2008
Location: Jersey, Channel Islands
The iPhone tends to adjust its brightness immediately when you unlock it. After that, I think it probably calculates an average ambient brightness in conjunction with the proximity sensor's data. Essentially, it'll more quickly respond to an increase in ambient brightness than a drop in ambient brightness (in general).

Basically, it will ignore a drop in brightness if there's something near to or covering the proximity sensor (e.g. your thumb when playing a racing game). An increase in ambient brightness (above that of the brightness measured at unlock), however, will usually result in a quick increase in display brightness for obvious reasons (there won't be anything covering the sensor during the increase).

I had a Samsung Galaxy S for a while and I noticed that it didn't use the proximity sensor to judge whether or not a drop in brightness was due to a thumb etc. Playing a lot of games in landscape, during which my thumb would cover the top of the phone as I held it, resulted in the display dimming... It was incredibly annoying.

EDIT: By the way, I leave my iPhone on just below 50% brightness with the auto-adjustment on. In my opinion, it gives the best balance between daytime visibility and use in low-light.
__________________
MacBook Air (13-inch, Early 2014) - 1.4GHz, 4GB RAM, 256GB Flash
iPhone 6 - 64GB Space Grey

Last edited by MarcBook; Sep 21, 2011 at 07:03 PM.
MarcBook is offline   0 Reply With Quote
Old Sep 21, 2011, 06:59 PM   #4
zelgit
macrumors newbie
 
Join Date: Sep 2011
Location: Linköping, Sweden
Hmm I just tested my iPhone 4 auto adjust to see if it is as you're saying and YES it is working slowly and wierd.

Ok it worked to go in a dark room to get lower brightness and a light room to get higher brightness and I tried to put it under a strong light then it did full brightness. But after that I went into a dark room with still full brightness haha wierd man! It takes about 10 seconds or so for mine to change...

Normally I never use the auto adjust. I do it myself as I need. Best solution hehe

[EDIT] : I have jailbroken mine to use SBsettings where you can adjust brightness very easy!
zelgit is offline   0 Reply With Quote
Old Sep 21, 2011, 07:01 PM   #5
djr7572
Thread Starter
macrumors regular
 
Join Date: Jun 2011
Quote:
Originally Posted by batting1000 View Post
That's why keeping it at about 25 to 50% with auto brightness off is ideal, imo.

Autobrightness also isn't good on battery. It is constantly using the sensor to detect the light settings so it can adjust the screen brightness.

I keep my iPod touch 4 at about 15 to 25%.

Interesting, I had always thought Autobrightness was better for the battery life because it's supposed to adjust based on your environment. Maybe it's just my phone, but Autobrightness has been rather worthless. I wonder if this is a common issue....?
djr7572 is offline   0 Reply With Quote
Old Sep 21, 2011, 07:02 PM   #6
MarcBook
macrumors 6502a
 
MarcBook's Avatar
 
Join Date: Jul 2008
Location: Jersey, Channel Islands
Quote:
Originally Posted by zelgit View Post
Hmm I just tested my iPhone 4 auto adjust to see if it is as you're saying and YES it is working slowly and wierd.

Ok it worked to go in a dark room to get lower brightness and a light room to get higher brightness and I tried to put it under a strong light then it did full brightness. But after that I went into a dark room with still full brightness haha wierd man! It takes about 10 seconds or so for mine to change...

Normally I never use the auto adjust. I do it myself as I need. Best solution hehe
As I suggested in my post above, a quick way to make the iPhone adjust to the ambient brightness is to lock and unlock it, especially when moving into a darker room or setting. That'll make it respond immediately to the change and is a bit quicker than going into the Settings app and changing it manually.
__________________
MacBook Air (13-inch, Early 2014) - 1.4GHz, 4GB RAM, 256GB Flash
iPhone 6 - 64GB Space Grey
MarcBook is offline   0 Reply With Quote
Old Sep 21, 2011, 07:03 PM   #7
batting1000
macrumors 601
 
Join Date: Sep 2011
Location: Florida
Quote:
Originally Posted by djr7572 View Post
Interesting, I had always thought Autobrightness was better for the battery life because it's supposed to adjust based on your environment. Maybe it's just my phone, but Autobrightness has been rather worthless. I wonder if this is a common issue....?
I've read that it gets brighter in the sunlight and dimmer in the dark. It's better to have the setting steady than have it constantly changing.
__________________
Verizon iPhone 6 (4.7") - iOS 8.1
iPad Air - iOS 8.1
Late 2012 i5 Mac mini
batting1000 is offline   0 Reply With Quote
Old Sep 21, 2011, 07:11 PM   #8
djr7572
Thread Starter
macrumors regular
 
Join Date: Jun 2011
Quote:
Originally Posted by batting1000 View Post
I've read that it gets brighter in the sunlight and dimmer in the dark. It's better to have the setting steady than have it constantly changing.

Which doesn't make any sense. Why would you want the screen dimmer in a dark room? Seems backward. On my my phone in particular, it wants to be dim in a dark room ... and if it ever does adjust itself, it's way after the fact. I don't know, mine is goofy to say the least. Very inconsistent in the way it behaves. I'm setting it myself from here on out ... hopefully it will equal better battery life rather than worse (I don't need the screen full bright, just bright enough so I can see it! Which Autobrightness is failing to do).
djr7572 is offline   0 Reply With Quote
Old Sep 21, 2011, 07:23 PM   #9
djr7572
Thread Starter
macrumors regular
 
Join Date: Jun 2011
Thanks for the feedback, everyone.
djr7572 is offline   0 Reply With Quote
Old Sep 21, 2011, 07:56 PM   #10
MarcBook
macrumors 6502a
 
MarcBook's Avatar
 
Join Date: Jul 2008
Location: Jersey, Channel Islands
Quote:
Originally Posted by djr7572 View Post
Which doesn't make any sense. Why would you want the screen dimmer in a dark room? Seems backward. On my my phone in particular, it wants to be dim in a dark room ... and if it ever does adjust itself, it's way after the fact. I don't know, mine is goofy to say the least. Very inconsistent in the way it behaves. I'm setting it myself from here on out ... hopefully it will equal better battery life rather than worse (I don't need the screen full bright, just bright enough so I can see it! Which Autobrightness is failing to do).
Think about it. The display is backlit, not reflective, so if it were to get darker in sunlight, you wouldn't be able to see anything it's displaying. In the opposite scenario, if it were to get brighter in the dark, it would become really dazzling and straining for your eyes. The backlight should match the ambient brightness, in order to maintain a comfortable viewing clarity.
__________________
MacBook Air (13-inch, Early 2014) - 1.4GHz, 4GB RAM, 256GB Flash
iPhone 6 - 64GB Space Grey
MarcBook is offline   0 Reply With Quote
Old Sep 21, 2011, 08:02 PM   #11
vitzr
macrumors 68030
 
Join Date: Jul 2011
Location: California
Auto brightness works remarkably well on mine. I have it on at all times, and have set the manual control to my preference in the daylight, then at night it adjusts to a very pleasant level in low light. I enjoy very good battery life as well.
vitzr is offline   0 Reply With Quote
Old Sep 21, 2011, 08:11 PM   #12
djr7572
Thread Starter
macrumors regular
 
Join Date: Jun 2011
Quote:
Originally Posted by MarcBook View Post
Think about it. The display is backlit, not reflective, so if it were to get darker in sunlight, you wouldn't be able to see anything it's displaying. In the opposite scenario, if it were to get brighter in the dark, it would become really dazzling and straining for your eyes. The backlight should match the ambient brightness, in order to maintain a comfortable viewing clarity.
I understand the logic. The brightness, ideally, should be just right and easy on the eyes. My phone just seems to make the display too dim every time I move into a darker room and I'm finding that to be straining. Maybe it's just not very good finding an optimum setting? Maybe it's just a weak point in my phone.
djr7572 is offline   0 Reply With Quote
Old Sep 21, 2011, 08:21 PM   #13
IrishVixen
macrumors 68020
 
Join Date: Jun 2010
Quote:
Originally Posted by djr7572 View Post
I understand the logic. The brightness, ideally, should be just right and easy on the eyes. My phone just seems to make the display too dim every time I move into a darker room and I'm finding that to be straining. Maybe it's just not very good finding an optimum setting? Maybe it's just a weak point in my phone.
I don't think it's specifically an issue with your phone. Whatever combo of sensor/algorithm they're using has been pretty worthless on all generations of the iPhone so far. And it's even worse on the iPad. I don't know anyone personally who uses it on either.

I JB'd and use SBSettings as well so I can adjust it quickly from any screen or app. Mine's typically around 30% indoors at home, closer to 50% under office-type lighting, and near max if I'm driving and using the iPod app in bright daylight. The times I've tried auto-brightness, it's ALWAYS too bright or too dark for comfortable viewing.
IrishVixen is offline   0 Reply With Quote
Old Sep 21, 2011, 09:01 PM   #14
djr7572
Thread Starter
macrumors regular
 
Join Date: Jun 2011
Quote:
Originally Posted by IrishVixen View Post
I don't think it's specifically an issue with your phone. Whatever combo of sensor/algorithm they're using has been pretty worthless on all generations of the iPhone so far. And it's even worse on the iPad. I don't know anyone personally who uses it on either.

I JB'd and use SBSettings as well so I can adjust it quickly from any screen or app. Mine's typically around 30% indoors at home, closer to 50% under office-type lighting, and near max if I'm driving and using the iPod app in bright daylight. The times I've tried auto-brightness, it's ALWAYS too bright or too dark for comfortable viewing.

Interesting. So it sounds like it's not necessarily my phone. Thanks for the feedback.
djr7572 is offline   0 Reply With Quote

Reply
MacRumors Forums > iPhone, iPod and iPad > iPhone

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Low brightness settings - how are you people managing? thelookingglass MacBook Air 13 Jun 28, 2013 08:29 AM
iPhone 5 auto brightness? karkid iPhone 2 Oct 16, 2012 01:59 PM
what brightness % do you have on your iphone 5? The Game 161 iPhone 27 Oct 15, 2012 11:42 AM
Brightness - iPhone 5, iOS6 VolcomLegend iPhone 4 Sep 27, 2012 10:56 AM
How much brightness iPhone 5? zekkragnos iPhone 5 Sep 23, 2012 06:09 PM

Forum Jump

All times are GMT -5. The time now is 10:29 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC