iPhone 6 Plus and iOS 9 major lag

This is the problem with iphone 6 plus 99%. My assumption, is because of 1080p screen as this is the only difference between 6 and 6 plus.

Also my previous comment was deleted, so to confirm ios 9.1 beta 5 till lags on 6 plus no matter the phone GB capacity.

I have a iphone 6 16GB and have the same problem. My phone is terrible! My notification bar does not clean the notifications, i need reboot my fone everyday because the bar gets full of old notifications. A lot of LAG too. I want to go back to IOS 8.4.1 but a can't, bacause is not sign enymore. COME ONE APPLE DO YOUR JOB!

Obs. IOS 9.0.2

Bought my iPhone 6 Plus less than 6 months back and it already performs like a 3-year-old phone. It stutters here and there, some of the animations look like they're rendering at 10fps, apps (even the native ones) crash or get stuck from time to time. I once missed a very important call because the phone was ringing, but not responding to my touch commands. I'm waiting to see if iOS 9.1 is going to fix these issues or else I'll have no choice but to say goodbye to iPhone after more than 7 years of loyalty. I never forget the year 2008, when iPhones used to be light years ahead of anything else in the market, known for their robust and crash-free OS and buttery smooth transitions. Well, not anymore.

So iOS 9.1 final is out and still lag is not fixed. Tried update and tried to restore as new phone. Absolutely no improvements. Time to switch. I ain't paying that money to try and figure out what's wrong with my phone. Apple failed miserably.

Same issue. Very laggy almost in everything. Im also have an iphone 5 running ios 8 and that one is faster than the 6 plus. Very disappointed. This is masive and apple still doesnt di anything about it.

Theres are tons of post in this forums about this, and apple its doing nothing this a major problem now fix this.

This 1k mobile device it should work flawlessly smooth don't know what this apple developers are doing!!

No improvement that I can see. Careful installing 9.1. I doesn't didn't fix the apps not updating bug and seems to have killed iMessage. I'm currently trolling for a fix for that. Still can't backup to iCloud and this hasn't worked since ios8. The new function of sketching in the note program still isn't working. I'm very disgusted with apple right now. I've had issues with upgrading both my iphones, imac and macbook pro.

I have two major problem after my upgrade to iOS 9.1 beside the Lagging issue...

First: I used to deal with contacts as to write down the names and get it once I write the initial, middle, last name...etc., now after I update my iOS to 9.1, I can see the full contacts but when I search for some names specific , it says at the middle of the screen "No Results"... this is the first time I witness this kind of problem.

Second: as long as I go through the upgrades of iTunes and Or iPhone, starting from iTunes Version 12.XXX there is no any Conacts Sync between iTunes and MS Outlook 2010 even if it's enabled in iTunes, so I return back to Version 11.XXX and it's working by this old version.

Finally, I need apple to answer on these two major problems ASAP

Thats right my friend. I dont know how many complaints it will takes to apple realize that this is a mayor problem. Makes me sick dealing with all the lags. Please apple do something!. I really apreciate all the advices given before for turning the phone a little bit faster in the meanwhile, It helped me and thanks for that, but guys, we are not supposed to be dealing with it. Its an apple problem! Lets encourage friends with the same issue to complain about it.

I'm having the same exact problems and have been since upgrading to iOS 9. I've restored from factory at least 3 times and still have the same lag issues. I'm so sick of being told "Oh, just disable the accessibility features..." I absolutely worship Apple but, Jesus Christ, I'm sick of issues every time they release a new major upgrade!

Just want to add my voice to this thread - I'm on a 64 GB iPhone 6, and iOS 9 continues to perform very poorly on my phone. The most annoying issue is the sometimes 1-2 second lag to wake up the phone. I hope this is somewhere on the iOS 9 fix list - maybe iOS 9.2?

The answer is easy. Apple has been so keen on making more profits they cheap out by shipping iPhone 6+ phones with the same amount of RAM as the 3-year-old iPhone 5. Also, iOS 9 does a lot of activities in the background (constant spotlight indexing and SIRI suggestions' processing to name a few). The phone just cannot cope with it without stuttering. Even the previous versions of iOS were not running so smoothly on iPhone 6+ phones. Apple already knows this and I don't think any future iOS 9.X update would fix this problem unless they disable certain features or processes that run in the background. To me, workarounds like disabling the transparency effect or Siri suggestions doesn't make any sense, especially knowing that we're talking about a 1-year-old phone with a $1000 price tag.

IPhone 6 has the same amount of ram and no laggy issues. iPhone 6+ is only suffering device, as far as I have tested them. The only difference between the devices is pixel count, everything else is the same. I don't think it's the ram issue.

EDited: Just tested RAM usage with siri suggestions and transparency enabled and disabled - only 60mb difference. So it's down to animation that the chip can't handle due to increased pixel count. I would assume Apple has to optimize animation better for bigger device.