20 - 30 minuten
My phone started shutting off whenever the battery reached 30%, then 40%, then 60%, then 70% and before I changed the battery as it reached 80% it would shut off. Even when fully charged if the phone was in use the battery would run down so fast so I decided let me change the battery.
It was quite simple. To put back in the screws and to line back up the SIM card tray were the hardest but still not too bad to get completed. It took me over two weeks to finally do this as I didn't have the time till today cause I almost threw my phone against the wall. I think anyone can try this replacement once u follow the step by step guide on the ifixit website. My replacement was completed in roughly 40 minutes.
Don't throw away your prized possessions, repair repair repair!!! It wil save you money. I kept all the screws for each side separate so they wouldn't get mixed although they all looked the same. Just take your time and it will be a breeze to change the battery cause I didn't think it would be that easy.