Black Friday Sale 2018 - Worth to check

The annual Black Friday shopping frenzy is fast approaching. Black Friday heralds the start of the Christmas shopping season and is an ideal opportunity to buy festive presents at a cheaper price.
Together with its more recent online counterpart Cyber Monday, the sales have become a major global event over the past few years as online shopping has brought the bargains to the rest of the world. Here, our REWA pick of the best sale of repair tools  so far.
When is Black Friday 2018?
Black Friday takes place the day after Thanksgiving, which falls on the fourth Thursday in November and this year it falls on November 23, followed by Cyber Monday on November 26.
PCB Holder for iPhone X

2 in1 Repair PCB Holder for iPhone X. More easy to fixed the Logic board repair and positioning plant tin. Just put the magnets at the bottom and then It second change magnetic plant tin holder. Two types available, here are your options:
PCB Holder for iPhone X – MJ – A23
Cellphone Repair PCB Holder for iPhone X – AM – Type 2
Soldering/Desoldering Rework Station for iPhone X

As we all know that iPhone X has double layers logic board. It is hard to desolder the upper and lower motherboard. This Tool can easy to solve the iPhone X Motherboard Soldering/Desoldering  issue.
Microscope

Microscopes are usually used in logic board repair. This Electron Microscope can dynamic observation and inspection of gadget, capturing, recording, saving, and timing capture. Realize window and partial magnification detection. Accuracy up to 0.001 mm.
Multifunctional PCB Holder

A multifunctional is integrated into one PCB holder for iPhone X. Like iPhone X logic board chip fixture, fast fix safety tin planting, protect the lower circuit, no risk of the leakage, remove hard drive into knife port and more.
Screwdrivers

Screwdrivers essential tool as for a repair person. It can be divided into slotted, Phillips, Pozi, Torx, Square, and Hexagonal and more according to screwdrivers head. Here are your options:
Torx Screwdriver
Pentalobe Screwdriver
Tri-wing Screwdriver
Phillips Screwdriver
Hexagon Screwdriver
Tweezers

Different occasions require different tweezers. In general, you should prepare straight and curved for need.
Straight Tweezers
Curved Hook Tweezers
10 in 1 Glue Removing Blade for CPU

10 in 1 Glue Removing Blade for CPU born to meet your needs. Various size choices, suitable for remove kinds of chips, CPUs and etc. Not only Shovel, hook, cut, pry, but the blade with scale so that the repair person can more easily and more accurately take apart the CPU rather than breaking it.
Precision Tool Kit

Since there are many different lengths and thicknesses of screws, sometimes it is necessary to prepare many different screwdrivers. Precision Tool Kit not only safe, efficient, and compact, it also combines the advantages of electric and manual. It is a precision repair tool and a future tool.
LCD Disassembly Tool

Simplest way to pop open a phone screen. Multi-angle screen sucker clamp, easier to take apart every gadget you want. Including two screen protectors, protect your phone scratch during the disassembling.

Fix Samsung S7 edge Won't Turn on - Chip Level Repair Tutorial

“Oh, my Samsung Galaxy S7 Edge won’t turn on!” Yes, we know and understand how annoying it can be when your phone remains frozen at the black screen almost like a dead wood. It is not easy to deal with an unresponsive phone, especially when it does not even turn on no matter how many times you try. However, you are not the only one whose Galaxy S7 edge won’t power on. There are many like you facing a similar fault. Since it is a common problem. You can find and try some basic ways from Google, such as check the power button whether it damage, perform factory reset and etc. Such those basic methods we have mentioned in How to Fix Samsung Galaxy S8 Plus Not Charging and How to fix Samsung Galaxy S8 speaker sound not working. You can take a look.

 

However, there can be various other reasons due to that Samsung Galaxy S7 edge won’t turn on. As for won’t power on accompanied with 50mA-80mA boot current, the first thing we do is to check power supply voltage. If nothing goes wrong, the fault is most likely to be related to CPU. If there is abnormal voltage measured, then check corresponding faulty position on the board. The fault component is finally confirmed as PMIC U7003, our focus today would be to fix this issue. We can fix the issue by replacing with a new PMIC(You can read our another about PMIC Replace Case- iPhone 6 Won’t Turn On Repair – PMIC Grinding and Replacing). Now, follow the instructions given below:

This tutorial offers by REWA Blog, more about the information about fixing Samsung Galaxy S7 Edge won't power on please go to their website.

How to Unlock Any Network SIM Not Supported iPhone

Recently, a news spread widely among iPhone users, especially whose iPhone bears Carrier Lock. The news claims that the locked iPhone can be easily unlocked by using a sim card sticker and a column of numbers. REWA LAB has tried and made a video on YouTube. Let’s check out if the news is real.
Inset a CUCC sim card into an iPhone with American carrier lock. And activate the phone.

The phone is unable to be activated.

Then insert the SIM card below the CUCC SIM card and try to active the phone. The phone could be activated normally, and the phone can make phone call normally.

After activated iPhone with SIM card sticker, spread the dialer board and enter *5005*7672*00#, and select carrier. Then select your iPhone model, which depends on the carrier.

After that, enter *5005*7672*00# again and input ICCID code: 8901410427780604313 and send. With OK appearing on the screen, click ‘Accept’. The phone will be unlocked successfully.

The unlocked iPhone can do OTA upgrade, and change SIM card without SIM card sticker. However, if the iPhone is Erased all content and settings, the phone will back into locked status.
Soon after REWA YouTube relapsed, Apple has fixed this bug, the Carrier locked iPhone could only be used with SIM card stick then. Also, they released the solution for iPhone X Face ID not working after change screen, I guess you guys are interested to take a look.

iPhone X Face ID not working after change screen repair tutorial

Note: This iPhone X Face ID not working after change screen repair tutorial offer by REWA. You can go to their website blog.rewatechnology.com to watch the video.

Recently we got many messages about face ID not available after screen replacement from our clients, which surprised our technicians greatly. Since the screen replacing would not affect face ID function at all according to our practical verification. However, REWA LAB has done some further researches and will share you the detailed analysis and solution for face ID failure caused by damage of flex cable after repair here.
How does face ID work?
First, let’s understand how face ID works. The whole functional area is dubbed the “TrueDepth camera system”, which is made up of flood illuminator, infrared camera, front camera, dot projector, proximity sensor, ambient light sensor, speaker and microphone. Every time you glance at your iPhone X, the flood illuminator detects your face with infrared light and forms an image. Then the dot projector will project out over 30,000 invisible infrared dots over your face to create a 3D map. Last, the infrared camera reads this map and sends the data to neural networks to create a mathematical model of your face. Your iPhone X will check that mathematical model against the one that you’ve set up and stored on your device to see if it’s a match, and if it is, it will unlock your phone.

How do we repair?
According to the description, this iPhone X was dropped once. However, the face ID is in normal status. It fails to work until a replacement of screen assembly. With all the knowledge, we begin our repair.
Power on the phone and it shows “unable to activate Face ID on this iPhone”. So we resort to resetting face ID. Go to Settings > Face ID & Passcode > Reset Face ID. We get the message “Face ID is Not Available, try setting up Face ID later”. Our initial judgment is that the unavailable Face ID might be caused by misoperation in the screen replacing process. Therefore, next thing we do is to check flex cables that are related to Face ID.

Disassemble the phone. And check the Infrared camera and dot projector module under Microscope first. Nothing goes wrong. Then move to the Flood illuminator module on the earpiece speaker assembly. Check the connector and flex cables carefully. Still, nothing goes wrong.

Then remove screws. And detach the earpiece speaker and front sensor assembly from the phone. Be careful not to damage flex cables in the process since the Flood illuminator module is bonded to glass lens with double-sided tape. We can see clearly that the flex cable where locates the Flood illuminator module is fractured at the edge.

Since the Flood illuminator module is an essential part for Face ID circuit, damage of the flex cable can result in not working of it, which can absolutely affect normal working of Face ID. Also, as flex cable repair is difficult, we can solder the Flood illuminator module to a new flex cable. To replace with a new flex cable, we need to separate the earpiece speaker and the ambient light sensor module from the earpiece speaker and front sensor assembly first. Heating with Soldering Iron, the ear speaker was separated successfully. Then, secure the flex cable in the place with High-Temperature Protective Tape for further separating the ambient light sensor module flex cable. Soldering Iron and Hot Air Gun are required to remove this flex cable. Once done, remove excess tins on the flex cable with Soldering Iron and clean with PCB Cleaner.
Now the fractured flex cable is separated completely. Next thing we do is to replace with a new flex cable. Remove the Flood illuminator module on the flex cable first. Prepare a new flex cable. Apply some Paste Flux to the bonding pad. Align the Flood illuminator module in place with the new flex cable. Be careful with the direction. Then solder with Hot Air Gun. Remove residual glue on the module afterward.

The repair part is almost over right the moment. Next thing we need to do is to re-solder the ambient light sensor module and earpiece speaker. However, the soldering of the ambient light sensor is a most difficult part for this repair. Whatever, let’s do it. Apply some Paste Flux to the bonding pad of ambient light sensor module. Then apply tins to the bonding pad with Soldering Iron. Clean with PCB Cleaner. Apply some Paste Flux to the bonding pad again. Get the detached ambient light sensor module flex cable in position. Secure the flex cable with one specific position soldered by Soldering Iron with curved nozzle first. Then use Soldering Iron with cutter nozzle to complete the remaining soldering process. Clean with PCB Cleaner afterwards. Now we need to solder the earpiece speaker back to flex cable.

It’s time to get the earpiece speaker and front sensor assembly assembled to the display assembly. Re-assemble the phone and test. Press power button to power on. Go to Settings > Face ID & Passcode > Set up Face ID. Face ID can be set up successfully. Press the power button to lock the screen. Press the power button again. The screen lights up. Glance at the iPhone X. The screen can be unlocked automatically. Fault cleared.