Tag: iphone 8

2nd Repaired iPhone 8 No Boot Issue Repair
iPhone 8 no boot after repairing by another repair shop. Compare with the water-damaged phones, this kind of second repaired phone is even more difficult to repair!

When receiving the phone, first connect with the DC power supply to check the boot process.

Boot current is abnormal, the current loop is between 250mA and 0mA.

As per previous repair experience, this kind of current loop with a high chance caused by USB IC.

The structure of the iPhone 8 is similar to iPhone 7, can be disassembled easily. After teardown, found the components around the charging part get resoldered.

The USB IC is just located around the NAND chip.

We need to replace the USB IC with a new one with the same specification.

Tip: from the iPhone 8, USB IC is different. Not compatible with iPhone 7 and before models.

Remove the U6300 and measure the diode value on the PCB pads, all pads with normal diode value.

And test the boot current again without USB IC installed, there is no loop again, the phone can enter into the system normally.

Then replace the USB IC with a new one.

Then assemble the phone and try to trigger the boot with charging, but the phone cannot be booted up, also there is no charging voltage. So there must also with charging problem!

Replace another iPhone 8 charging port to test, the issue remains the same.

After that, we can draw a conclusion, the issue might come from the charging-related rails.

Find out the charging IC and related components on the Refox bitmap.

Apply with DC power and measure the voltage value, the basic working conditions (the power supply for charging IC) like the PP_VBUS1_E75, around 5V voltage can be measured on C3301.

So the issue might be caused by charging IC U3300 getting damaged.

*. Different from iPhone 7, there is no charging tube (MOSFET). So we go to charging replacement directly.

Replace a new charging IC then test, the boot current becomes normal and there’s a 4.2V voltage can be measured on the battery connector.

Assemble the phone and test again. Everything is OK, the phone can also be charged normally.

Summary
- The phone gets fixed by USB IC and charging IC replacement.
- For the no boot issue caused by charging relative parts, we can start from the battery and charging dock replacement first. After that, if still unresolved, check the USB and charging IC relative rails.
January 8, 2022
iPhone 8/X Light Sensor Failed Even With Genuine Parts Repaired By Third Party

Recently, REWA has got feedback from a number of third-party repair shops that some iPhone 8 series and iPhone X have got “ambient light sensor not working issue” after repairing even with genuine parts. After testing and analysis, REWA LAB has found that Apple might have set up some technical barriers for repairing to prevent customers from resorting to third-party repair.Let’s check the video and find out the testing procedures and results.

September 8, 2021
Apple iPhone 8 Leaks And Rumors And More

As the Apple iPhone 8 release dates approaching, Apple iPhone 8 is shaping up to be one of the most impressive Apple smartphones to date. Whenever we open the Google site, spilling details about Apple iPhone 8 are here and there. Now in this blog, we round up everything we know about iPhone 8 so far. Still, your information is also warmly welcomed.

Naming

Let’s take a look at Apple’s standard naming scheme at first:

2007 – iPhone

2008 – iPhone 3G

2009 – iPhone 3GS

2010 – iPhone 4

2011 – iPhone 4s

2012 – iPhone 5

2013 – iPhone 5s

2014 – iPhone 6 and iPhone 6 Plus

2015 – iPhone 6s and iPhone 6s Plus2016 – iPhone 7 and iPhone 7 Plus2017-?

Since Apple is rumored to be planning to produce three iPhone models in 2017 for its 10th-anniversary celebration, the potential naming scheme is totally confused. Some rumors are that the two other devices could be called the “iPhone 7s” and the “iPhone 7s Plus” with their similarity in style to the existing iPhone 7 and iPhone 7 Plus. In that way, as Apple’s 10th-anniversary smartphone launching alongside the two devices, iPhone 8 is tipped by some to arrive at the ‘iPhone Edition’ or ‘iPhone Pro’.

Release Date

According to with the 10th-anniversary celebration, the iPhone 8 is most likely to be announced in September 2017 if everything goes well. However, some analysts claim that due to issues with its Touch ID sensor, supply chain and “technical challenges”, production could be delayed. And so far there is no certain time when the smartphone can make itself onto shelves.

Apple iPhone 8 Design

For screen type, one rumor goes that the iPhone 8 is going to sport a curved AMOLED display instead of the usual flat LCD panel. And the screen size may be around 5.8 inches, just like the Galaxy S8.Just a few days ago, case manufacturer Olixar becomes one of the first to reveal an entire line of cases for the upcoming iPhones. It has also started accepting pre-orders for the cases.

“This time in the form of their new case line-up for the iPhone 8, which are available to pre-order now! Showcasing the front and back of the phone, we now get a further look at Apple’s latest handset, thanks to these official Olixar renders.” ——MobileFunThe product picture on the site shows off the phone’s bezel-less display and lacking of a physical home button, and the back does have a large vertical camera typically used for dual cameras. The protector also appears to indicate a number of cameras which would be used for selfies and potentially even facial recognition. Well, it’s still not official news, but we can refer to it anyway.

Other Rumored Specs

-New design with an ‘all-glass’ construction-Edge-to-edge screen-Wireless charging support-Apple A11 chip-3GB of RAM-iOS 11 with improved Siri, P2P payments-Face-scanning technology-A Smart Connector-Free AirPods-Vertical dual cameras on the rear-Support for LTE speeds up to 450Mbps

Price

With all these rumored fantastic design and features, the iPhone 8 is suggested to be the most expensive iPhone Apple’s produced yet. There may be no exact figure by now, so just get your wallet prepared because APPLE is coming your way!

June 23, 2017