Replace battery, earpiece speaker and lightning jack-what sequence

Front panel is the terminology the IFixit instructions use, so I wanted to be consistent. The problem is that the lightning port is the most serious fix. The battery is getting bad, but still works and you can use speaker rather than the earpiece. However, I don't think I could test the battery without changing out the lightning port it's gotten so bad.

Can I power it up with the case open and check each component as I go as you are suggesting or do I need to close it all back up and reopen as I go? Thank you.

U can open it and and test as u go as long as u dont over stretch or bend the flex cables for the screen too much... u dont have to fully fit the charging flex to test it, just plug it in and test its charging then do the rest, the only reason I say do it in stages is because people do these things all in one and go and if ur not experienced and something goes wrong u dont know what stage things went wrong in... most important part in any of this is all the screws are important and all of them are pretty much different sizes.

When u remove the screws for the plate that holds the screen connectors in make sure u dont mix up the 5 screws if u have no other way to organize them just lay them out in a pattern on a piece of paper and put tape over them to hold them, messing up here u can cause long screw damage to the board. Then with the screws at the top of the screen for the bracket that holds the earpiece, 3 different screws mixing these up and u could damage the screen.

Its easiest to pull the battery tabs out to remove the battery when u have removed the charging flex, if u get the tab with a pair of tweezers or something similar just keep pulling slowly all the way down and it should take the adhesive out in one go.