iPhone 6s Plus is very sluggish, taking several seconds for touch to register

Discussion in 'iPhone and iPod Touch' started by bautistak1, Jan 23, 2021.

  1. bautistak1

    bautistak1 New Member

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    How it started
    My iPhone 6s Plus is barely usable now. It takes several seconds for my touch to register. This only began at the end of December while I was listening to audio messages. I was in the middle of responding to one when the “Low Battery” notification popped up. I dismissed it because I wanted to finish my text. I still had 20% juice left.

    To my surprise, when it played the next audio clip, it started lagging very badly. I didn’t get to send my iMessage. I figured I’ll charge the phone for a while, thinking it’ll help. It didn’t. It was still unbearably slow so I restarted it to no avail.

    Next, I decided to drain the battery all the way down to 0% by playing YouTube clips on auto-play. Opening the app took me a long time, but the audio playback was fine. I recharged the phone all the way up to 100% but it still didn’t fix the problem.

    Trying to fix it
    Running out of options, I reset my device to factory settings and did not restore from backup, fearing it might reintroduce the bug. The result is the same—lag like there’s no tomorrow. Even in the setup screen.

    Frustrated, I put the phone in recovery (DFU) mode and restored the firmware using my Windows laptop. It didn’t fix anything. The phone was still slow.

    Key notes
    My phone worked phenomenally before all of this. I barely even use it because I have a secondary phone for work. It has never been dropped, water-damaged or exposed to the elements. It looks as pristine as the day I bought it.
    1. The phone is running iOS 14.3 when the issue started. It is still running that software now.

    2. My battery capacity is at 91% with the phone saying it’s in “Peak Performance Capability.”

    3. It has been diagnosed by Apple Support via chat and everything came back clear. No hardware problems were detected.

    4. The phone sometimes comes back to its “original” or “intended” speed when I’m trying to unlock it with a passcode. As soon as I get to the Home Screen or swipe right to open Camera, however, the phone starts slowing down again.

    5. When the issue first started, my cellular service and Wi-Fi started acting up. The former displayed “No Service” while the latter took too long to connect. The bug seems to have been fixed by the DFU restore.

    I have a couple of things in mind: another DFU restore when iOS 14.4 comes out or a battery replacement. Beyond that, I don’t know. I’m at a loss. I know it’s an old phone, but it’s never acted this way until that one day I decided to listen to the voice messages. Has anyone ever experienced this? Any recommendation?

    Thank you so much.
     
  2. ste@lth

    [email protected] Well-Known Member

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    You have a very interesting case, knowing that apple has resolved the throttle issue they did on old phones just to save "battery" my wife's phone was an iphone 6s and was working well up to now although she already gave it to her mom (gave her an iphone 12 pro max), my perception is a code bug but knowing that the phone is quite old it might save you time and effort to just replace it with a new one, my two cents, good luck! :)
     
  3. bautistak1

    bautistak1 New Member

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    I transferred everything over to my iPhone 8 Plus which still works fantastic. I’m just looking for options to get this one fixed because I need a secondary phone and I kind of “collect” the phones I used, if that makes sense.
     
  4. h2obaby

    h2obaby Active Member

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    Apple Support once replaced my out-of-warranty iPhone (I think it was an iPhone 5) because of a software bug. Try getting them to do that. The phone support ultimately recommended for us to bring the phone to a reseller (Power Mac) to process the replacement.
     
  5. john.roque

    john.roque Active Member

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    It seems the phone is running at a lower voltage than typical. My guess (and it is just a guess) is that the Power IC chip is shot. The most common reason of it breaking is usually a non-genuine lightning cable.
     
  6. bautistak1

    bautistak1 New Member

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    How long ago was this? Do they replace older models?

    I haven't actually used any other chargers other than the Lightning cable and charging brick it came with.
     
  7. john.roque

    john.roque Active Member

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    T
    Then it “could” be the battery, but it should be detected by the phone immediately once it could not provide the full performance capability. This is why even the newest iPhones slow down at around 1-3% because the battery is expected not to have enough power to do full tasks. As it might cause an unexpected shutdown if it didn’t slow down.

    Kaya I’m not super convinced the battery is at fault but more of the controller IC itself that is managing power. I doubt it is software either
     
  8. bautistak1

    bautistak1 New Member

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    Would an AASP still service this phone?
     
  9. john.roque

    john.roque Active Member

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    You can have it diagnosed from there but either they’ll simply replace the battery and it fixes the problem OR they’ll give you a vague answer na “replace logic board” and ask you to replace the whole device na.
     
  10. bautistak1

    bautistak1 New Member

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    One last question: Do I need anything before I take it in? This device was purchased at an Apple Store in California, so I'm not sure if they're going to accept it. I just don't know how all of this works. I've never taken anything in for a repair before.
     
  11. h2obaby

    h2obaby Active Member

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    It was an iPhone 6 pala. Got it replaced Q4 of 2016. You can ask Apple Support what your next course of action is since you tried basically everything. Also, try calling — there’s a toll-free number if via landline.
     
  12. john.roque

    john.roque Active Member

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    Set up an appointment by calling the service center first. Usually they’re on an appointment basis this pandemic (Switch and Powermac Service Centers in my experience). Since it’s out of warranty anyway they’d probably accept it but you can have that discussion over the phone anyway.
     
  13. ste@lth

    [email protected] Well-Known Member

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    Out of warranty claims sometimes gets so unreasonably expensive, so just a caution unless your really nostalgic to his phone you'll be better off to buy a new one :)
     
    john.roque, raypin and Kingmaker like this.
  14. Kingmaker

    Kingmaker Active Member

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    1) Beyond the Box Service Center don't need prior appointment. You can "walk-in" anytime to avail service.
    2) Be prepared to pay a diagnostic fee of 800 pesos (Beyond The Box) to 1,000 pesos (QCD Tech) whether you have it serviced or not.
    3) At Beyond the Box, if you had your phone serviced or "opened" outside authorized centers in the past, they will decline servicing it, so be aware of that since they will still charge you that diagnostic fee if you decide to still leave it with them and they tell you since it was "opened" by 3rd party(ies), they decline to service it.

    Good luck.
     
    #14 Kingmaker, Jan 28, 2021
    Last edited: Jan 28, 2021
  15. textguru

    textguru Active Member

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    try this - https://getsupport.apple.com/

    If you select chat, they will diagnose your unit on the fly. They will recommend to you the next step.
     

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