iPhone 5 screen dims by itself..

Definitely an ongoing issue with my 5 as well. Can happen with any app and several times each day. A 'Restore' didn't fix the issue.

set up my iphone 5 as new and never had an issue. restoring from old will cause issue or simple restore doesn't help. i'm sure tgey will fix in next update??

Exact same issue. 4s, 3 occurrences over past two days. Upgraded to iOS6 about a week ago, just started noticing this yesterday.

My phone did that to since I got it dims by it self. Did apple say anything about it never had it with my old phones its iphone 5 or ios6 my guess

My new iPhone 5 does the same thing. I am having no luck getting a spare Lightning to USB cable, anyone know when we may see them on the shelves?

i'm having the same issue... happened twice already. out of nowhere it went to the dimmest setting and i tried to go to setting to adjust the brightness but it wouldn't work. it just stayed dimmed. i had to restart the phone in order to get the phone running normal again. this happened after i restored my brand new phone. no back up from previous iOS or upgrade. just simple restore because i thought i was having some battery issue.

same issue here as well, i upgraded from an iPhone 4S to iPhone 5, restored all my information.

everytime i go outside the screen goes dark so i can barely see anything, the only way to fix it is by turning off the phone and turning it on again.

apple - please help?

i went to the apple store today to get the phone checked with a technician and after he ran the diagnostic it seemed like there were several things (4 total) on my phone that crashed including two that were apps, which caused the sudden dimmness on my screen. so it was pretty much a software issue and not hardware thank god. he restored my phone and said everything should be fine now.

i suggest taking your phone to the apple store and get it checked. make sure you make an appt first because they only go by appts if you want to see a technician.

follow up... i was experiencing the screen dimness again even after the restore. guess i'm going to the apple store to get a replacement.

This dimming issue has happened to me 3 times so far. I have a new IP5 from the original shipment on 9/21 that I activated on 9/22. I have not restored the phone, but I still see the dimming issue. All three times I simply locked it with the "sleep/wake" button, hit the home button, and slid to unlock. That returned the phone to full brightness. A fast work around, but it is still something that needs to be fixed in the next firmware update.

I am having the exact same issue. It's happened to me 4 times in the last month.

It only happens from the lock screen when I've activated Siri, or even just hit the home button to activate the screen.

The screen goes very dim. I managed to get the screen to come back to life by navigating to the brightness settings and moving the brightness slider down to dim and ten back up to full brightness.

Another time I just hit the on/off button and then hit the home button and the screen came back to life.

It's never happened once I've unlocked the phone.

So I can only guess this is an iOS 6 Bug. Well I hope so. It seems too common to not be.

i suggest that you take the phone to the apple store and get it swapped for a new one. i went into the store yesterday and told the guy that it was an ongoing problem and i was getting tired of it so the guy replaced my phone with a new one. the dimness also happened to me 3 times even after my phone was restored (twice). if the dimness is occuring more than twice then it could also be a hardware issue. either the keypad or sensor is having some issues that is causing the dimness.

I've booked into see a genius today.

I really don't want to get a new phone.....I've put screen protectors etc on it....what a waste.

It surely has to be a software issue.

I guess I will find out soon what they recommend for me to do.

i didn't want to get a new phone either and mine had a screen protector on there as well. however, if the problem is reoccuring even after a restore then get a new phone. you can always get another screen protector for cheap. i got mines from ebay. they're only 2 dollars for like 6 of them.

the dimness is a software issue but i'm just saying it if happens more than twice (even after restoration) then the problem is also hardware. that's what i was told.