How iPhone X Boot Circuit Works | REWA Academy Logic Board Repair Online Course

[@rewatechnology2008]

For more course information , please check bit.ly/3ejmLfY Q&A with REWA Team, please like and stay tuned to our FaceBook page: REWA Technology ( bit.ly/3agYFha )

[@mudassariqbal6880]

When your next video is coming????

[@eliasellis6795]

I know im randomly asking but does anyone know of a way to log back into an instagram account?? I stupidly lost the password. I appreciate any tips you can offer me

[@musaenoch2277]

@Elias Ellis instablaster ;)

[@eliasellis6795]

@Musa Enoch i really appreciate your reply. I got to the site through google and im waiting for the hacking stuff atm. Looks like it's gonna take quite some time so I will get back to you later with my results.

[@eliasellis6795]

@Musa Enoch it worked and I now got access to my account again. I am so happy:D Thanks so much you saved my ass!

[@PhuketMyMac]

World is going mad but Rewa finds a way to make it a little bit better. Looking forward to it.

[@rewatechnology2008]

Thanks for your kindly support! We will keep up our work :)

[@technicalpoint306]

Please help me to get a job at mobile servicing 🙏

[@rdp8545]

Well done. This has to be one of the first video's I've seen that actually goes through the steps of a schematic on an iPhone board. These sorts of instructions are invaluable and helps people understand what each chip and bus line does. Great job!

[@techneglankaschool7872]

this is the first video to explain iphone .. good luck reva. thanks

[@wintutorials2282]

REWA, thanks for making this video. REWA is truly one of the best companies in the world.

[@rewatechnology2008]

Thanks for your support :) We will keep work!

[@h4cl3s79]

Cám ơn bạn, Rewa, vì những gì các bạn đã và đang làm lúc này... Điều này thật sự rất tuyệt với tôi và những người đam mê công nghệ. Một lần nữa cám ơn các bạn.

[@saminajjar5767]

So much respect REWA Technology !! You guys deserve it ..

[@marlonglodo1930]

Hi there rewa team.... iam so excited...

[@sharfazhameed6382]

Rewa is on another level. Their engineering brains n explanations are on point. Thanks a lot for all the informations.

[@laminelayaida2019]

Thanks for the explanation. Youade it very simple to understand. I repair MacBooks and notebooks and I understood very easily your explanation. Thanks a lot

[@rewatechnology2008]

Thanks for your feedback on our content. Hope you can get some enlightenment from it :)

[@tlnwuibu9777]

thank you. It was above all awesome. I hope you guys can make more videos like this. It is really very helpful.

[@ramialsayed2325]

Thank you so much.. you are perfect.. I hope you to continue sharing these perfect information with us.. I will be your student the first chance i had.. thanks from the heart

[@X-TRON-1]

Service To Mankind Is Service To God. Thanks ♥️

[@bihariswag7301]

Love from India bro excellence work..🙏🙏🙏

[@samanazeez-cv3js]

Real useful Thans REWA Technology you are the best one.

[@phony_fr]

Learn most of your course simply on my bed and you learn me crazy stuff literally

[@Liveables]

Thanks but can also include images of the components us you explain or draw current lines directly on the mortherboard,

[@rewatechnology2008]

Thanks for your feedback :)

[@aminkhosravi9199]

very good. tanks Rewa

[@NovaEmotion]

thank you , very useful information and easy to understand explanation especially for beginner repairers, please make more videos like this with circuit and diagrams

[@gandalfdergraue8444]

Thanks a lot for this Introduction... Perfect entry in the world of repair, especially, if you want to know or be able to fix ,,dead'' mainboards and your area doesn't really provide you the help (like training courses or schools) you need...👍👍

[@Liveables]

We are waiting Rewa

[@gurpalsingh5768]

Cheers for this awesome post .I finally got an excellent result will this lovely method when I tried it.I am enjoying it now

[@Peyami86]

That is very generous. Thank u REWA 👍

[@abedsaleh2406]

Thank you Rewa, informative video and easy to learn, we appreciate what you are doing.

[@josephineoredi4851]

I have managed to work out this crazy floating thing.

[@Xclub40X]

Rewa-ing our circuits... Rewarding our life... Loving our phones, Now to fix a smashed up XS Max.... Thanks for your help.... Can I use your videos as a reference on my channel please?

[@mironcheff]

More interesting! Thanks for this video.

[@jitupatel1862]

Are rewa 👌🏻👌🏻👍🏻👍🏻

[@avirk6401]

I got devices current swing between 0 to .07 Amp mostly I found I2C lines has problem but sometimes even 12C lines are okay issues still exist what else is the reason of that current swing While power supply connected if I touch multimeter pin to take reading of nand reset 1.8 V Current swing stops and device goes to dfu I tried to restore but eventually it gave error 4013 kindly let me know a proper solution Thanks in advance

[@bvbist]

Remove the nand and restore it with itunes if its stuck on waiting its relate to cpu if 4013 happened its bad nand

[@ivanpineda7871]

Ali Virk Sepárate and Solder Again with ch5 preheater.

[@avirk6401]

mehrdad SL thanks for answering but it’s not a solution I’ve issue with voltage swing that problem occurs when bus or data lines from CPU to motherboard stops communicating i just wanted to know which line and what is a proper solution

[@kennyjacob4101]

Keep up your good work Rewa team. You should make more study tutorial videos.

[@rewatechnology2008]

Thanks for support and pls stay tuned to us for more contents :)

[@smartfingerprint8776]

Rewa is a excellent

[@syed3887]

I have I phone x volume down button not working I try to replace the flex cable still the same issue can u plz help me to guide how I can find the voulme down key connection on board to make jumper to solve the problem.

[@hassantariq1741]

good job

[@CtrlHelp]

Nice Work REWA TEAM

[@SajidKhan-xp9sm]

World number one video u r real trainer

[@adriann2005]

Thanks man! Works without any problems!

[@nawazsheikh3515]

Bro iPhone x battery connector points damage solution plz help

[@namanhtran5339]

Thank you so much.. you are perfect.. From VIET NAM WITH LOVE

[@juanacostasereno6074]

Un millón de gracias, saludos desde Colombia, su fiel seguidor espero algún día poder ir a visitar sus instalaciones.

[@rewatechnology2008]

Thanks for your kindly support!

[@poyuco30]

Could you put a link where you can download the photos of the class block diagram and download those files thanks

[@rewatechnology2008]

Please check this link ( www.refoxteam.com/ ) as a reference :)

[@aarepairgent908]

@@rewatechnology2008 refox have diode values?

[@allaoui38]

I don’t understand , why the voltage stop before the mosfet , why he can’t pass through body diode of the mosfet ?

[@khatommy9378]

Wow.verry good.the clip REWA amazing.Thanks so much

[@sajadahmad2935]

Rewa iz no 1😊

[@dimpalbalaji9734]

Good work 👍

[@mensahrobert4925]

Please I need explanation on this problem. iPhone motherboard will be connected to DC power supply, when power button is press, on the DC power supply you will see that it's booting but no Apple logo then the power will drop to zero then it will start again. ( It will be reading on the DC power supply like this when the power button is press 57,80,98,120,221 amhs) this is how it will be reading on the power supply then it will start the same process again but in the process NO APPLE LOGO. Please help me with this problem

[@rillsali5394]

fantastic 💯💯💯👌👌👌 thanks for very informative teaching . i hope someday i may have a chance to be one of your Lucky Students. more power REWA it’s really help a lot. ❤❤❤❤

[@purnasapkota3679]

Hi rewa team.... iam so excited.

[@michaelmelech842]

Hi from Austria! I was reballing two halfs of the logic board from iPhone XS Max when boot on the pow dc went until 0.12A and after 10 seconds trying to boot again but it’s again stops at 0.12A could it be pp1v1_s2 ? on the Multimeter diode mode checked 0.007 readings Any ideas? Regards mick

[@xocorox9402]

Los felicito por su trabajo, muy buena explicación y muy detallada

[@rewatechnology2008]

¡Muchas gracias!

[@thaerthaer4453]

Best channel ever

[@anytimemobileservices9272]

Great work guys and thanks a lot

[@liboy34]

Hi rewa very thank's for this educational videos.

[@rewatechnology2008]

Hope you can get some enlightenment from it :)

[@sudhiptameher4577]

I..love rewa technlogy

[@emadsaadi8899]

Thank u from iraq ,good gob

[@OnYourSquare]

Is that Vincent doing the voice-over? Great to job .

[@rewatechnology2008]

Yes! Thanks for your watching :)

[@juancordoba8759]

MUCHAS GRACIAS,POR ENSEÑARNOS ESE PASO A PASO. Y DEDICARNOS TIEMPO VALIOSO PARA ENSEÑAR ,NO SABEN LO VALIOSO QUE ES PARA MI ESE TIPO DE CURSO. BENDICIONES......

[@rewatechnology2008]

We do appreciate your recognition of our efforts. ¡Muchas gracias!

[@janakkothari4003]

exilant explanation

[@mahmoudtrabaie2971]

THANK YOU FOR YOUR EXPLAINING HOW THE MOBILE MAKING BOOT BUT COULD YOU PLEASE ADDING THIS PROCESS ON THE CIRCUIT DIAGRAM OF THE MAIN BOARD, WITH MY RESPECT FOR YOUR EFFORTS.

[@rewatechnology2008]

Thanks for your suggestion :)

[@ШохрухХасанов-ш3г]

Perfect thank you rewa ))))

[@kingrock6128]

Thank you for your free lesson I love your videos

[@thomasamani6276]

Good job ,thank you

[@sarfrazahmed9456]

You are great. Thank you for very knowledgeable videos. 🙏

[@kailashmobilerepair2695]

Thanx Rewa 🙏🏻

[@lalarepairservices1872]

I lear it a lot and i am also interested to be part of REWA technology

[@rokasbravo9714]

i enjoyed learning,and understanding, how its flow

[@PM-le2di]

Sir pls ans, iPhone x boot prosses is same in android.mi,opoo, samsung.?

[@BengaliAntiks]

Can you repair ipod touch 3rd gen its locked and icloud locked and screen doesn't work

[@alright272]

Love your videos! Can you please replace the cpu in a Mac mini?

[@yusufqureshy9058]

very useful thxxx so much

[@sisok40]

thank you very much!!

[@nectarshrestha31]

Sorry i am confuse now Does Reset signal from PMU to CPU or CPU to PMU make me clear.

[@zufat4714]

Miss Nectar Shrestha CPU to PMU

[@nectarshrestha31]

But in this digram it shows that reset signal come from pmu to cpu. Thanks buddy

[@wucollins1727]

I wish you guys could post the charging circuit video 😢

[@imranosman210]

Thank you team Rewa

[@inderjeetkaushal]

boot error i got ...Nand Write failed...What can be issue of this ... power not reached to nand chip or anything else?

[@farhans2650]

Which software using for schematics

[@rewatechnology2008]

farhan s hi, you can check refox on refoxteam.com, a free schematics

[@farhans2650]

@@rewatechnology2008 thankyou

[@rizwanshaa]

best vedio. got good information. superb

[@eng.hussainalaa766]

Hello for There is wrong information .. from iPhone 8, Apple has created a new line for the power key . Its >>BUTTON_POWER_KEY This line is from PMU (U2700) And they use the line PP1V8_ALWAYS TO PROVIDE 2 circuits 1.PMU _XRAL2 2.TIGRIS_TO_PMU_INT_R_L

[@rewatechnology2008]

Hi Hussain. Thanks for taking the time to share your thoughts. Below is our standing based on some research for your reference: After PP_VDD_MAIN outputted to PMU, PMU will buck the voltage to PP1V8_ALWAYS. This power with 3 functions: 1. TCXO_PMU_32K (As you mentioned) 2. TIGRIS_TO_PMU_INT_R_L (As you mentioned) 3. Via R3074 then transfer into BUTTON_POWER_KEY_L, to keep the power connector pin 9 related rail with 1.8V voltage, so that the trigger signal can be generated after pressing the power key. For the signal PMU_TO_AP_BUTTON_POWER_KEY_L, it will be outputted from PMU to CPU directly after CPU is standing to work. Based on repair level requirement, we did not put it in the boot circuit. Welcome to discuss the exchange for seeking common progress :)

[@eng.hussainalaa766]

REWA Technology num 3 **** the resistor R 3074 is not existing On logic board and remarked on the schematics as (nostuff) so the 1v8 came from u 2700

[@rewatechnology2008]

@@eng.hussainalaa766 We are glad to discuss the schematic with you, it will help us better understand how it works. Yes, the “1v8_always” come from PMU, also it is applied to "BUTTON_POWER_KEY_L" and "PMU_TO_AP_BUTTON_POWER_KEY_L" as trigger signal when power button pressed. But "BUTTON_POWER_KEY_L" and "PMU_TO_AP_BUTTON_POWER_KEY_L" signals are triggered in different scenario. When press power button for power on the iPhone from off status the trigger signal is applied "BUTTON_POWER_KEY_L" . When press power button for wake up the iPhone from sleep status the trigger signal is applied "PMU_TO_AP_BUTTON_POWER_KEY_L". This conclusion is based on our master's experience, maybe it's not correct, after all, we are not apple engineers just repair technicians. Thanks for your idea and the time you taking for us :)

[@eng.hussainalaa766]

REWA Technology REWA Technology .. with due respect your master have to check the schematics page 30 and he will find there is no any connection between Power on circuit and PP1V8 always from A11 cpu to newest

[@hodarjmj8939]

Amazing ! Thank you.

[@gtrepairapple1822]

thanks you rewa very nice explanation..

[@akramnazeir5505]

amazing one , thx too much 😘

[@robertoatsoc1971]

SIMPLESMENTE MUITO GRATO POR ESSAS INFORMAÇÕES VALIOSAS, MUITO OBRIGADO GRUPO REWA DEUS ABENÇOE A TODOS. SAUDAÇÕES DO BRASIL

[@quovolez]

Why iPhone X startup sometimes 4-5 seconds for Apple logo to appear, and sometimes 2-3 seconds to appear?

[@chrisjohnsonnagbe775]

Pls are you offering online course

[@Chembetiadiseshu]

Explain Good

[@СафаМамедов-ь4п]

Thanks 👍

[@shaing7532]

is that repair book is available?

[@DeepakVerma-jt6vm]

I have checked your videos on your site the videos are only of iphone 6 and 7 what about other models and there videos. Plz make price little low $399 is to much from my side

[@rewatechnology2008]

Thanks for your interest. The course package is renewable and you can access all newly-added courses in the package free of charge within the validity period. The course of other models will be uploaded continuously, please stay tuned to us :)

[@goutammondal3167]

I am interested your class. Cast?

[@FDoneDay]

Very thanks

[@themobilephoneclinic1019]

how about iPhone X keep rebooting every 3-5minutes? what would the problem?

[@vinsonyu3299]

It might be the battery info. detect pin unstable, or battery connector loosen, buddy~

[@IphoneFixer]

Pm me

[@Shm991]

We are waiting for next class

[@POSITIVE7861]

very nice explained .i like ur teaching

[@rewatechnology2008]

Thanks for your feedback!

[@sudhiptameher4577]

Reali amazing

[@FDoneDay]

Respect rewa

[@luciferx1636]

Nice . It's good learn. Thanks a lot.

[@rewatechnology2008]

Thanks for watching and hope it could be some reference for you :)

[@RisetoPower77]

excelente que tenga subtitulos en español el curso online tambien deberia de tenerlos

[@rewatechnology2008]

We will try to improve the user experience of the online course. We do appreciate your suggestion :)

[@towfiqhasanmiah8142]

Could you tell me how much cost for iPhone motherboard repaire pls

[@gassanali8667]

thank you REWA for the free content. it's gonna help a lot. but the background music is a cause for distraction. music isn't suitable for education videos

[@rewatechnology2008]

Thanks for your feedback :)

[@johnm4962]

Thank you.

[@notonemaulani6466]

Android and iPhone systems are almost the same. I think different. thanks for the knowledge

[@massimilianobarresi.]

Thanks very much for the video course.. i like to see the others.. it's possible to have the powerpoint file? Appreciate!