⟐ Answered September 28, 2014 at 14:38 MST

also the top water sensor indicates that there was water damage

⟐ Commented July 27, 2013 at 10:25 MST

⟐ Answer edited July 06, 2011 at 10:59 MST

I changed the LCD and digitizer in my launch day 4s and ever since i cant get any signal for my cellular. I tried my antenna (the part on the speaker) in a friends iphone 4 and it works fine. Wifi works fine, bluetooth seams to work, but no cellular. Once in awhile i can get 1 bar, sometimes itll go full signal, then it'll cut right out and die on me again. Anyone have any tips? did i maybe forget a screw that im not seeing? Exactly what screws (or anything else) is required to make the cellular service work? I can see my imei number, so i know the baseband itself is working even when i have no service.

Thanks in advance for any advice.

⟐ Commented February 10, 2016 at 7:37 MST

There might be a few screws that aren't exactly the right size, and I've tried switching some of them to no avail. I am sure that the screw for the battery connector is correct. I am told the antenna is connected via screws. Is this correct? Any help would be appreciated. Thanks!

⟐ Answer edited June 02, 2016 at 13:10 MST

I can see the back light on under the black. I can hear sounds and it receives calls.

Thank you for any help!

⟐ Commented January 25, 2017 at 8:55 MST

⟐ Answered June 25, 2018 at 4:02 MST

⟐ Commented February 15, 2025 at 22:10 MST

Do I need a new button? Is there a problem with a flex cable? Is there some other easy fix that can be done by making sure that all the parts are in place?

Thanks for your help!

⟐ Commented May 01, 2018 at 8:52 MST

This week I’ve placed 4 new OEM batteries into 4 iPhone 6S’s. All 4 customers came back with the same issue: when the percentage goes below 20%, the phone starts to lag so much they cannot use it anymore. As soon as it is plugged into a charger, the issue disappears.

For the past 7-8 years, i’ve been repairing iPhones, and last year alone I’ve replaced at least 70 iPhone batteries without any complaint. January and february i didnt do any repairs because of work abroad, and now in march i get all this trouble. Could this be because of iOS 11.2.6? Is this an extreme case of CPU throttle? How can i reset this? Will iOS 11.3 fix this?

I hope someone can clear this out because this seems like Apple trying to eliminate 3rd party repairs!

Thank in advance

⟐ Answered September 21, 2025 at 2:04 MST

An iPhone 4 CDMA came in for a screen and back cover replacement. So we did the repair and the phone worked fine. The customer came back in about a week later saying the phone wont turn on. It ONLY turns on when it's plugged in to the wall. So naturally I decide to swap the battery, and it still doesn't work. So I try more batteries, and none of them are working. I got fed up with putting the back on so many times I decided to try the rest of the batteries with the back off. The first battery worked, so I said OK. I went to go put the back on, and as soon as I put it on the phone died.

Then I took the back off and the phone powered up again, (powering it on with the button).

As soon as I put the back on, it works. As soon as I slide the back down into place, the iphone dies.

Also, with the phone back off and the phone working, it does all sorts of things. The battery percentage is extremely imprecise. Jumping from 32%, to 47%, and to 100%, and to 0%. I know it's not a battery issue as i've tried about 20 batteries. Does anyone think it could be the charge port? Or some kind of chip on the mobo that reads the battery's percentage?

I've never seen this before in my life and I need help, I can't find anyone else on the internet that this has happened to. I don't quite like having to refund people their money, and neither does my employer.

⟐ Commented February 16, 2024 at 4:25 MST

⟐ Answered April 06, 2022 at 0:29 MST

probably this question has been asked many times

here is my problem

i have an iphone 4, during incoming or outgoing call, i can hear other people, but other people can't hear me, i've tried speaker mode,same thing. have not try headphone with mic yet.

i tried to go to camera, and record a short clip, i can hear my own voice though, so it is only happening during calls.

here is what I've tested so far

i have another perfectly working iphone 4, so i began to swapping parts.

first, i swapped the motherboard only, and it seems like it is not the motherboard. because the mic problem iphone motherboard transfer to a good phone, and i can hear people and other can hear me.

and the good iphone motherboard on the bad mic iphone housing still have the mic problem.

my guess i narrowed it down to the housing.

so continued swapping the bottom speaker, bottom mic and charging port, it seems like these parts from bad iphone housing to a good iphone are working.

so it doesn't seem like problem on lower mic and charging port, lower speaker/antenna.

what else should i try?

⟐ Answered June 02, 2018 at 23:28 MST

^= Click on this

Details : The battery was at the end of its life , it couldn't bring enough power to the baseband chip.

█►► IMPORTANT : ◄◄█ == After replacing the battery you'll need to flash the BB to 06.15 again or if you had stock BB then do a simple restore

__________________________________________________________________

Hi, I just bought a used 3GS from Ebay , it was stuck on Recovery Loop , I fixed it.

But then when I started to use the phone , after 3min of use , it will restart by itself. No matter the firmware (tried many versions + jailbroken/non jailbroken ...)

I think it's an hardware issue , what do you suggest me to do ? (I already took it apart , visually seems OK , all connectors are there ...)

Noticed that it will also reboot by itself in recovery mode too but not during restores

ADDITIONNAL INFO : No matter if it's plugged or not , the reboot problem occur

Didn't notice but the baseband seems corrupted 06.15 failed , wifi greyd , bluetooth too . I'll try changing the battery but it might be baseband corruption causing the phone to reboot .

The corruption is software , I might be able to fix it ?

• Random reboot + No IMEI / Wifi etc look : http://www.youtube.com/watch?v=tcrxZh_li...

⟐ Answered August 18, 2014 at 2:27 MST

⟐ Commented August 14, 2019 at 13:13 MST

Then my home button stopped working. I took it in and they told me to re install everything. I did that twice and it went to the emergency screen. So I brought it back...and they said they'd fix it only to tell me that they couldn't because I had "unlocked" it and therefore voided the warranty. I actually had to ask them what "unlocking" was!!!!

Anyways, so frustration aside, I picked it up today and was able to restore everything from my backup. But then it started acting up. Now the screen goes back and forth as if fingers where swiping to the search screen or the second screen of apps. If I open an app, it automatically goes back to the home screen and then jumps around to other things. It's acting like it's possessed!!

Anyone know what's really wrong here?

⟐ Commented May 25, 2018 at 6:10 MST

⟐ Commented September 22, 2022 at 17:09 MST

I replaced the battery with a new item from iFixit, charged it overnight, and in 6 hours it is down to about 60%.

Is there a way to reset it, especially the energy management (like resetting SMC on a MAC)?

Any suggestions?

⟐ Commented September 05, 2020 at 16:19 MST

I have some news for the people whose Wi-Fi is not working.

I tried many things and now have more concrete facts about this problem.

My Wi-Fi can't find any networks.

First, I thought that the problem was the Wi-Fi antenna.

On eBay there are many "Wi-Fi antennas". All the vendors tell that this antenna http://www.traderscity.com/board/userpix... handles the Wi-Fi, but it is not the right one.

I disconnected the cable mentioned above and Wi-Fi was still working. Only the GPS stopped working, so the Wi-Fi antenna must be somewhere else.

I think that this part http://www.dealextreme.com/details.dx/sk... handles the Wi-Fi and the 3G. I changed the part, but the phone was still not finding any networks so I thought that the Wi-Fi chip on the logic board may be broken.

I wanted to make another test so I installed the jailbroken app called "mywii". With this app you can open a ad hoc network with your phone. The app works, so the Wi-Fi chip is not broken.

In conclusion, the Wi-Fi antenna and chip are working fine, but phone is not finding any networks. This is very strange. I have no idea what the problem can be, but its not the antenna and not the Wi-Fi chip.

I also tried resetting network settings, as well as updating and restoring the phone, but nothing works.

⟐ Answer edited April 17, 2016 at 13:13 MST

Today I was taking a picture at a white background and I noticed this dark shape on my camera. I thought that it was dust or something on my lens and cleaned it carefully with some cotton and some cleaning substance for lens and they looked clean with no scratch or anything. When I opened the camera app again, the spot was still there. I never dropped my phone in water or anything. I dropped it from like 40cm on its face, but it's been like a month since then and i checked my old photos. The spot wasn't present.

Definitely it's something in there. When i zoom in, the spot gets bigger. When i zoom out, it immediately disappears, no matter the zoom out value under 1. Also, in portrait mode the spot isn't visible.

What can it be? A friend of mine told me that it can be a software problem but i doubt…

Thank you!

⟐ Commented May 14, 2026 at 5:31 MST