I'm thinking that I will try to clean up this corrosion before trying to plug it in again, but I'm not sure what sort of tool to use. Are we talking isopropyl alcohol and a Qtip, or is there some other accepted approach?

⟐ Commented March 29, 2026 at 16:25 MST

⟐ Commented December 11, 2025 at 10:07 MST

⟐ Commented October 26, 2025 at 17:46 MST

⟐ Commented October 26, 2025 at 17:36 MST

⟐ Commented October 12, 2025 at 5:46 MST

⟐ Commented September 17, 2025 at 10:57 MST

⟐ Commented September 15, 2025 at 19:06 MST

⟐ Marked as duplicate September 13, 2025 at 7:49 MST

⟐ Answered August 16, 2025 at 20:32 MST

⟐ Commented July 16, 2025 at 14:16 MST

⟐ Answered July 15, 2025 at 4:17 MST

I've tried holding the home and lock button. I also tried holding the lock button while constantly pressing the home button, but I think the problem with this is that my home button barely worked before the drop. I've tried to reset it and put it in DFU mode, but nothing is working. :( Note that I can't take it to the shop because it's jailbroken.

⟐ Commented June 08, 2025 at 9:30 MST

my question is, would this oil eventualy evaporate over time? or do i need to take it apart even deeper and do alcohol bath?

wath would happen, if i submerge this phone (switched off) into this alcohol bath in one piece? would it die instantly? can it get shorted by alcohol?

thanks for answer guys, you are my heroes...

⟐ Answered May 18, 2025 at 5:45 MST

⟐ Commented May 09, 2025 at 9:41 MST

I often do iPhone repairs but i have a question about an iPhone that is showing strange behaviour.

This iPhone 4 just goes black all of a suden. I doenst repond to anything, its not working at all at that moment. Also a reset is not possible at that time.

It is not possible to power on the iPhone. Only when connected to a charger is can go on. When its on everything is working fine, shows up in iTunes etc.

I replaced the battery with a new one a did a software recovery. Still the problems accur. It doesnt seem to matter if the phone is connected to a charging source or not, it just shuts off random. When the phone is on everything is working normally.

Another thing that i noticed, when its shuts down you wont see the spinning circle that you would see when manually powering off the iPhone, it just goes dead inmediatly. When the phone is powered off manually, it will also go on the normal way. When it shuts down itself this is not working

The battery is working fine, the phone accepts and charges it just like normal.

Home & sleep button are working perfect.

Any ideas what to do with this *****

***UPDATE*****

The iPhone is now constantly fibrating, it was charging on my pc. Now it wont go on but keeps fibrating :S

When putting the iPhone in DFU mode and try to recover it gives errors. like '2005 and 106'

Any ideas? Any help would be apreciated

⟐ Commented March 28, 2025 at 1:20 MST

⟐ Answer accepted March 26, 2025 at 17:29 MST

When I try to make a call, the phone immediately shows "call failed" even without any ringing.

When others call my number, they report that my phone is 'disconnected.'

I am able to send and receive SMS messages, but no calls. What is wrong? How can I correct this? I am lost without the use of my phone.

⟐ Commented January 07, 2025 at 7:00 MST

⟐ Commented December 06, 2024 at 20:21 MST

Despite having some power out of the box, the first one just refused to charge at all and slowly dropped down to 0% and is now completely dead. A replacement for that defective one charges to 94% and then stops. A second replacement seems to charge to 100%, but as soon as I take it off the charger it instantly drops to 97% and then slowly discharges down to around 88-89% before it charges back up again, even if plugged in.

I followed the instructions that came with the batteries to 'calibrate' them (charged to 100% - or as high as they would go - and left for 2 hours, then discharged until the phone shut off and left for 2 hours, then re-charged) but the behaviour remains the same.

I've also tried putting the original battery back in the phone and charging that to see if I damaged anything in the phone when conducting the repair, but that still charges to 100% fine (even if it doesn't last long these days, hence looking for a replacement!). I've also tried once of the replacements in another iPhone 4 I have available, and the same behaviour is exhibited. I've even tried different cables/plug chargers and charging either via a Mac, a powerbank or a wall socket, with no difference. So it does seem to be the batteries.

Now iFixit have been great customer service-wise, sending replacements to me, but I wonder if there's much point me trying again to see if they'll send another replacement, or if the stock they have is likely so old at this point that they're probably all going to be defective in some way?

Also, if I just make the best of what I can with one of these batteries, is there any risk to using batteries displaying slightly 'odd' behaviour like that? The phones will mostly be stored away, obviously, but I don't know if I'm better just removing the batteries entirely.

Thanks for any help you can offer! :)

⟐ Commented September 20, 2024 at 16:03 MST

⟐ Answered September 18, 2024 at 18:00 MST