(601) 699-8246

|

hello@salvationrepair.com

IPHONE 4 REPAIR

  1. Home
  2. Posts

Iphone 4 Troubleshooting And Repair Guide

Repairing Your iPhone 4: Troubleshooting Common Problems

Problem: iPhone 4 reception loss due to loss of copper clip?

Answer:
Significant wireless and GPS signal loss might result from the missing copper part.
I also lost that component at a non-authorized service center (those who presume the manufacturer included it for amusement).
In the end, I had to swap my iPhone for a new one from Apple!
If you want a working phone, find the clip and put it where it belongs.

Block Image

Problem:
iPhone 4 camera has a flickering fault

Answer:
Greetings, folks!
I have an iPhone that I just repaired (severely damaged digitizer/LCD).
During testing, I discovered that the camera function is no longer operational.
When I launch the camera app, the rear camera loads and functions, but when I switch to the front camera, the “retina” shuts and the “camera-video” switch in the lower right corner begins to flicker.
I am unable to use the camera feature after that occurs until I completely disconnect the battery and reset the iPhone.
This isn’t the first time this has happened to an iPhone.
Because I’ve restored it multiple times, I don’t believe it’s a firmware issue.
Furthermore, I am aware that this could be the cause because the iPhone has been damaged.
I simply want to know if there is a solution for this problem.
Any help would be greatly appreciated!
Update:
I’ve reset the iPhone for the second time, and now the camera doesn’t work at all.
Fun times.
Update 2:
I restored the iPhone using custom firmware, opened the camera app, and the back camera worked.
However, once I switched to the front camera, it decided to screw itself up once more.
Update 3:
I just realized that my warranty is still valid, so I’ll have someone take the phone to Apple to have it replaced for free.
Update 4:
I just returned from the Apple store; after a 20-minute wait, I had a brand-new iPhone in my pocket 🙂
Summary:
Restore is the first step in resolving any firmware-related issue (custom and iTunes firmware).
You should move to part replacement if the problem persists after you’ve done that (if it’s related to the camera app malfunctioning or something similar).
You’ll have to assume the logic board has been damaged in some way if you’ve replaced the part up to three times and it’s still not working (yes, it’s necessary to replace up to three times; sometimes you’ll replace a faulty part with another faulty part, the joys of technology).
Resolution:
Return it to Apple and let them handle it 🙂
Because the geniuses at the genius bars are so short on time, they physically do not have the time to open the iPhone and check to see if it has been tampered with.
All they’ll do is check the liquid indicator, and if it hasn’t gone off and the fault remains with them, you’ll get a replacement without any questions asked.

Block Image
Block Image
Block Image

Problem:
Is there an iPhone diagnostics program I can use to test with?

Answer:
You could check that out to see if it can help you in any way.
“It’s called the iPhone Configuration Utility, which lets you view logs from your iPhone or iPod Touch, apply configuration and provisioning profiles, and more.
The tool is fascinating!”
I believe the software you’re referring to is “Behavior Scan.”
More details can be found here, here, and here.
I hope that gives you a good place to start.

Problem:
Is the Sim Reader faulty or short-circuiting?

Answer:
The SIM tray detector is indicated by the red circle.
When the SIM tray is fully inserted, it pushes that copper bar down, breaking the connection on the left side of the SIM bay area in your Red Circle.
The iPhone recognizes to try reading the SIM card when this connection is broken by the SIM tray.
If the connection is complete (not broken), like in the photo, the iPhone will display the warning “No SIM card installed,” and the top left corner screen bar will show “No SIM.”
If an empty SIM Tray is inserted fully and pushes the bar, breaking the connection, the reading begins, again there will be the warning “No SIM card installed,” and the top left corner screen bar will display “No SIM.”
You can clean the metal contact on the card itself with isopropyl alcohol if there are problems reading the SIM card.
Visit your carrier and get a new SIM card if this doesn’t help.
Additionally, reception issues can be caused by antenna problems; make sure the antenna ribbon is properly screwed to the bezel at the dock port.
Also, ensure the Logic Board’s copper pin at the Do Not Remove Sticker makes good contact with the bezel.
You claim that the six copper Junctor Pins are in good condition, and you can also carefully clean them with isopropyl alcohol.

Block Image

Problem:
Speaker does not function during private calls but does on loudspeaker

Answer:
It appears that your microphone is malfunctioning or that you did not install it correctly or damaged it during reassembly.
In the iPhone 4, there are two microphones:
1.
On the lower left (iPhone facing frontwards)
Block Image
2.
In the upper left (iPhone facing frontwards)
Block Image
The other port on the iPhone’s lower right is for the speaker.
Now, the speaker also serves as a microphone, but it only activates when the phone is on speakerphone, which is why people can hear you when it’s turned on.
The Main Microphone is circled in Red, while the blue circle indicates the connection ribbon responsible for the iPhone’s recognition of the microphone, speaker, and other components.
So, now that we know the ribbon (circled in blue) is operational because the speaker produces sound, the problem now rests with the microphone itself.
You may have dislodged the microphone when reassembling your iPhone, when replacing the speaker assembly.
Take a look at it to see if the tiny rubber piece covering the microphone is properly positioned.
If it is, take a close look at the ribbon itself for any minor tears.
Inform me of your progress.
I hope this helps!

Problem:
iPhone 4 drains battery due to speakers

Answer:
Hi Josh,
Regrettably, the majority of WiFi/Overall Phone Reception is conveyed through that component.
That component is known as the “Antenna Bridge” or “Speaker Assembly” (both are the same thing).
As you can see, four metal feet are connected to the iPhone frame.
The feet then use the iPhone’s entire frame as an “extended antenna,” significantly reducing iPhone reception if broken off.
Block Image
Block Image
<img decoding="async" src="https://guide-images.cdn.ifixit.com/igi/XUfyYSnJAjJ2</p>

0 Comment

Leave a Reply

Registration isn't required.