I have an iPhone 5S running iOS 7.1.1 which is quite rare these days and has sentimental value to me, so I want to avoid upgrading iOS at all costs.

The phone is stuck on the activation screen and shows "Searching…" in the top left corner permanently. I connected it to 3uTools and noticed the following:

• IMEI 1 & 2: None
• Baseband Version: Empty
• Baseband SN: Empty
• Baseband Status: BBNotReady
• Cellular Address: Shows a valid MAC address (84:B1:xx:xx:xx)
• Coprocessor: None

The phone also randomly displays a blue screen (kernel panic) approximately 1–3 minutes after booting and then reboots.

I exported the real-time logs via 3uTools and found the following repeating errors throughout the entire log:

AppleD2045PMU::_readADCGated(x) ADC read bad state: 1
AppleD2045PMU::_readADCGated(x) failed with status=e00002d6
CLTM: Could not get value for PMU tdev1/tdev2/tdev3/tdev4/tbat/tcal/tjunc
CommCenter: com.apple.AppleBasebandManager.RadioNotReady
CommCenter: CSI state dump requested: modem boot up failure
BBUpdater error 3 — Failed creating a communication transport to baseband

Every single ADC channel (2, 8, 10, 11, 12, 13, 14) is failing with kIOReturnNotReady consistently throughout the entire log without a single successful read.

The phone has had a screen replacement done previously. Long screw damage was considered but ruled out because the phone actually boots, reaches the hello screen, and works for a few minutes before kernel panicking — classic long screw damage usually results in immediate boot loops or no power at all.

My theory is that the D2045PMU chip has a partial internal failure — specifically the ADC block is dead while the core power delivery functions still work (hence the phone boots). This would explain both the kernel panic (iOS can't read sensor values) and BBNotReady (baseband can't get proper power/communication).

My questions:

1. Does this log pattern confirm a D2045PMU hardware failure?
2. Would a reflow be worth attempting before replacing the PMU?
3. After PMU replacement, will iOS 7.1.1 recognize the new chip automatically or is any additional firmware/software work needed?
4. Any chance this could still be a software issue given that the cellular MAC address is visible?

Thanks in advance.

Does that mean I would need to replace the LCD in order to get rid of it?

First time trying to fix an iPhone so any insight is greatly appreciated!

When I input my SIM card it’s showing no service

⟐ Commented September 16, 2024 at 21:01 MST

Here’s the details:

The phone does not display anything

The phones screen is dangling by the cable (when the screen is flipped over you see a mirror on the back)

Is there any advice for me or is the phone cooked?

Edit: I currently have the phone plugged in, I’m going to leave it there for an hour and see what happens

⟐ Edited by author July 10, 2024 at 17:33 MST

⟐ Edited June 17, 2024 at 21:25 MST

⟐ Edited June 17, 2024 at 21:17 MST

⟐ Edited June 17, 2024 at 21:22 MST

⟐ Edited June 18, 2024 at 3:09 MST

⟐ Edited by author April 12, 2024 at 22:36 MST

⟐ Answered February 24, 2024 at 12:16 MST

I recently stumbled upon my old 5s and i decided to fiddle wwith it seeing i had given up on it years ago. Surprisingly the phone was recognized by itunes and it downloaded whatever files were needed but im stuck on the activation screen. I have tried to put on a sim but it just says no service and then it goes back to "searching". The two screenshots are from the attempts I made to activate the phone. One from itunes and the other pops up on the phone itself. Any suggestions would be welcomed. I've also tried m3u but the phone is not recognized there the connection just times out.

What could be the proplem. No water damage or physical damage I think. Could something like fuse in the motherboard blow cause these problems.

Any help would be greatly appreciated.

Thank you!

⟐ Commented June 20, 2023 at 7:42 MST