Chosen Solution
Maybe the question look a little bit out of this website context since it dosen’t focus on any specific device or technical issue But it seems that having a strong books in our hands to acompany us in our journey through fixing and troubleshooting is a must Thanks for help !
@errors404 there are no books for that. You may find teh odd service manual for a phone online but there is nothing specific that is official. that is why forums like iFixit are as important as they are. Here you can share your knowledge already gained and you can question experts like @refectio @arbaman @rany etc. for more specific and complicated issues that you have not yet come across. You will learn all of this through practice and connecting with other repair people. If you want to get deeper into component and board level repair I suggest that you learn how to read schematics and get an basic understanding of electronic circuitry etc. Even with all that you will still need to get the schematics and board layouts for whatever devices you are going to repair. As you can clearly see on here, mobile phones and tablets that do not have schematics/boardview files, are not receiving the same attention with their repair. Most of those remain almost always unrepairable.
Repairing phones is really a hands on activity. I would recommend locating some dead phones for experimentation and following the tear-down guides on this site. This is the best way to start. Get comfortable with dis-assembly and re-assembly using already dead phones and then move up to replacing a few parts using a phone that works. You can get working phones on Ebay for example. Verify that the phones work as expected (except for calls) and then remove and reattach the screen. Verify that the phone still works. Move on to other parts too. Again, this type of work is more hands on than reading. Search the web for articles on diagnosis of problems. Read the postings here for more information as well. Hope this helps, Dan
