iPhone 6 rear case replacement - Adhesive for rear case circuitry?

Hello,

This will be my first forum posting on iFixit.com. I tried thoroughly searching for my particular question in the forums but I couldn’t find the answer or it’s possible it hasn’t been asked. As I mentioned in the title, I’ll be working on a rear case replacement for the iphone 6. I’ve already resurrected the same phone from water damage by disassembling the phone, with the exception of removing the very thin flex ribbon cables that are glued to the rear casing and that are connected to the various system components, i,e., charging and 3.5 mm audio jack, power button and volume control circuitry and also the EMI shielding. I did a thoroughly cleaning using 99.9% isopropyl alcohol, dried it and managed to get it functioning again without issue. I’m aware from some iFixit guides that in order to do a rear case replacement, all the circuitry that is adhered to the inside of the rear case has to be taken off carefully with a flat tool such as a spudger.

My question is: Do I require any sort of adhesive for all the components after removal or is the adhesive adherent or sticky enough for me to simply remove the components, swap the rear casing and place the components back on the new rear casing? I understand that some websites that I’ve seen do sell, i.e., iphone 6 charging port and audio jack adhesive so will it be necessary for all or any components such as the charging port?

I appreciate your help, comments and/or suggestions in advance.

Thanks,

Mike