⟐ Commented ottobre 21, 2020 at 2:10 GMT-7

⟐ Commented settembre 27, 2020 at 6:57 GMT-7

⟐ Answer deleted aprile 04, 2020 at 15:13 GMT-7

⟐ Answer edited marzo 14, 2020 at 17:46 GMT-7

Was being the operative word here, right up until she took it skateboarding - with a predicable outcome.

After removing the crushed screen protector and finding there wasn't actually any further damage to the screen other than the original crack in the corner, I proceeded to dig in to evaluate the issue. She brought it to me because every time she turns it on, it displays the Apple logo for a minute or so then goes black only to repeat the scenario ad infinitum.

So I opened up the phone and tried every combination and permutation of plugging and unplugging all of the connectors on the motherboard to no effect; nothing I tried made any difference.

Finally I plugged it into a computer and managed to get it into DFU mode. It told me the phone couldn't be updated and had to be restored, so I said fine, go ahead and restore it.

No luck there; it quit with error 4013. I did have a replacement screen that I was holding onto for the inevitable time when the screen took more damage and truly needed replacement, so I went ahead and plugged the replacement screen in and tried the update again with the same results.

Now it no longer boot loops, but comes up in DFU mode every time.

I'm forced to conclude there's probably damage to the logic board and would like some help in determining what my next step should be. I have a certain amount of equipment such as a multimeter, soldering iron, heat gun, etc., at home but I can always go into work and use the professional grade equipment there like microscopes and hot air stations if need be.

At this point I'm considering the possibility of attempting to reflow the audio IC as demonstrated in this guide that actually describes the situation pretty well.

How to fix an iPhone 7 stuck / hanging on a logo - iFixit Repair Guide

However, are there diagnostic steps that I should try first? Things like diode checks? If so, what should I check, and what would I be looking for?

I've worked with circuit boards for about 40 years now and the delicate nature of iPhone logic boards will be a first for me, but I have no problem diving in and giving it my best shot.

I'm tagging @flannelist as the closest to an expert in this area that I'm aware of, but would welcome anyone else who has expertise in this area that's willing to help out.

Update 5/6/2023

Tried connecting with 3uTools. When flashing it gets to 19% after the "Sending KernelCache" part, changes to "Restoring", then fails with "ERROR: Device failed to enter restore mode."

Interestingly, when I click on the "Exit Recovery Mode" button on the Device page, it actually does exit DFU and goes back to its reboot cycle. Afterwards I put it back in DFU mode and it stays there.

⟐ Commented maggio 17, 2023 at 19:31 GMT-7

⟐ Commented maggio 16, 2020 at 8:37 GMT-7

I got my screen replaced on my iPhone 7 Plus, the touch ID is not working but the actual function on the "home button" works fine.

Any ideas??

Thanks!

⟐ Answer accepted giugno 02, 2019 at 8:58 GMT-7

It’s not working also Bluetooth.

I need the wifi antenna part to replace.

Where i can order?

⟐ Commented dicembre 11, 2018 at 2:53 GMT-7

I have seen other people experiencing this issue as well on this forum, would definitely like to know what's going on. This looks like software related... is this because of 3rd party screens?

Thank you

⟐ Answered ottobre 28, 2018 at 7:27 GMT-7

My phone (iPhone7) got water damaged.

Everything working wells except the vibration, I guess is the Taptic Engine thing.

Im find a weird situation where, under the settings (Sound & Haptics) if I turn on "Vibrate on Ring" and select the ringtones, all the ringtones having the same Ringtones Sound which is (Opening (default) ) sound.

If I turn of the "Vibration on Ring", I'm able to play ringtones when I choose other selection example (Apex, Beacon and etc..)

My question is if I replace Taptic Engine does it resolved my issue?

Thank you.

⟐ Answered luglio 09, 2021 at 4:26 GMT-7

searching the internet, i found some suggestions about settings in the Accessibility section, but none of those made any difference.

i read in a few places that (and this is conjecture from multiple sources) this is a new "feature" in IOS 15.6 (and later), that when IOS detects there "is a problem" with the home button (meaning it doesn't see the one that was shipped from the factory) it very helpfully turns on the Assistive Touch on-screen button - whether you want it or not. and even if you turn it off, it IOS doesn't care and will turn it back on.

does anyone have any additional light to shed on this?

i get that Apple is just trying to make the user experience better - we're from the government, we're hear to help you... - but when we switch the setting off, it should stay off. "No" means "No" Apple!!!

thanks for any insight you might have.

⟐ Answered gennaio 05, 2025 at 4:30 GMT-7

⟐ Commented dicembre 20, 2021 at 16:21 GMT-7

When will replacement cameras for the iPhone 7 be made available?

⟐ Answer accepted giugno 07, 2017 at 4:48 GMT-7

Since my iPhone's home button assembly (with its separate ribbon cable) is still completely intact, will it keep its touch id capabilities after I replace the extending ribbon cable?

Thanks!

⟐ Commented aprile 30, 2023 at 13:31 GMT-7

Issues: When i go into voice memo, I can't hit record button. It's grayed out. I try to facetime with someone and it immediately cancels. Place a call and the precipitant can't hear me. Try to record video and there is no audio. Clearly something is wrong with the recording features. Also, if I go into settings--> accessibility and try to turn on or off "Noise Canceling" that selection, where it SHOULD be, is not even in the menu. Just shows Mono Audio and then that's the last option. Strange.

I did a FULL reset, including settings, of the phone and restored from icloud. Updated to most current OS, etc.....and still same issue. So I'm starting to think this isn't software related. Is there anything else I need to check? Oh, I also checked under privacy to see if microphone was in there. Nope. Nothing at the moment.

I'm open to suggestions. I'm comfortable replacing the microphone hardware; however, I want to determine if that is what is bad first, before I spend the money and time.

⟐ Commented aprile 28, 2022 at 12:19 GMT-7

⟐ Answered febbraio 16, 2021 at 20:37 GMT-7

I bought an iPhone 7 that came with no power, no charging issue, and without water damage. The phone was never opened and the board looks brand new. So I decided to look for the problem.

After going with troubleshooting , and after pressing the power button, the phone was drawing around 0.6 Amps, but no shorts were found in all VCC lines (MAIN, BOOST, etc). In fact all the PP lines were with the right voltage values.

Because there was some small heating coming from the CPU side (I couldn’t verify which side -bottom or top- was heating first), I decided to remove the stickers. After that, I could’t find any damage or short, so I removed the CPU shield (same as I did before). Then, I checked all voltages and looked for a short on VCC lines, but everything seamed normal.

However………. the current draw is now around 0.03 Amps after removing the shield.

Any clue?

I am afraid that I had a damaged/broken CPU chip (maybe caused from a faulty charger?, which I cannot know because the phone wasn’t mine).

Did the heating (from removing the shield) revealed the real problem? Or is it just something else? Does anyone has faced this problem before?

Thanks in advance for any hints!

Regards.

⟐ Commented febbraio 12, 2021 at 23:14 GMT-7

I‘m consider to have my cracked iphone 7 screen fixed. I want to make sure that the screen part to be exactly the same. The screen kit I found on this website is marked as OEM, can anyone explain what does this exactly mean? Does it mean this part was used by apple or this is only an aftermarket part option?

Thanks a lot for your help!

Best,

Yubei

⟐ Commented aprile 08, 2025 at 8:18 GMT-7

This dint do anything, the phone merely vibrates when plugging it in normal mode. iTunes dosent detect the phone as well.

This gave me some hope. iTunes detected that the phone was in recovery mode. How ever I got the “There is a problem with the iPhone “iPhone” that requires it to be updated or restored”. So I decided that the phone’s OS needs to be updated to 12.3.1. So i update it and the phone finishes the update and goes into normal mode. The phone is still locked. I thought maybe the update had failed so I tried it again. No luck, same error.

Now I am here with 3UTools, not sure what to do. Is there something I can do in DFU mode ? This seems like a really trivial thing, and there has to be a simple solution to this without a factory reset and wiping the data. Any help is appreciated.

I am willing to go to all lengths to preserve the data. I don’t mind opening up the phone and maybe doing something with the hardware (i.e. battery reset if there is such a thing). I have the iFixit toolkit and have repaired an iPad before so that should not be a problem.

I read what @benjamen50 had mentioned here : iPhone is disabled, connect to itunes.

I followed the exact same steps he mentioned. I tried flashing 12.3.1 version firmware onto the phone from recovery mode. So once the flash was completed, it booted up into normal mode and showed me the same screen. Is this normal or should it go back to Recovery Mode ?

⟐ Commented giugno 26, 2020 at 13:42 GMT-7

I already replaced a lot of LCD’s (no iPhone 7’s) and never had any issue.

Now I had an iPhone 7 to repair (screen replacement) and ordered a china display.

After replacing the screen, I noticed that the iPhone performance (ios 11.4.1 - latest one) is not the same as it was before. It’s not that bad but the difference between before and not is obvious. The phone doesn’t crash or doesn’t need long to open apps, or the performance is not 1sec behind as some people complain. It’s just working little bit slower (juddery).

I would like to know if this issue is related to the china display or if I broke something during replacing the display?

Unforutnately I don’t have the original display, otherwise I would have tried it.

Finally I ordered another Display from Amazon that has a 5 Star revision (120 revisions). This one is better as the one before. It’s kind of faster but still not as fast as an original Display.

Has anyone did the same experience or has the same issue?

Thanks in advance.

This evening I will upload a Video to show you guys exactely what the issue is.

⟐ Answer edited ottobre 14, 2018 at 14:35 GMT-7