I don’t want to start a business as such yet, just as a hobby for now. This kind of thing really interests me
Screwdriver
But what kind, because many do not use star or flats
The ifixit kit really is the best bang for your buck. unless you are working on a lot of the same devices and want to invest in high quality tools for those specific bits.
Take care of your eyes. That’s fine work and being able to see well will make everything easier. I’m not familiar with the gear specific to the task, but I notice Louis Rosman using jeweler’s lenses and different magnifying glasses.
Also wear eye protection when working with screens.
And steel toe boots. Some of the phones are heavy as fuck. OP didn’t specify, so we have to assume he will also be working on Vodaphone VM1:

I’ve fixed a bunch of them, as well as tablets, and I really like the toolkit from iFixit. It’s great as a beginners set.
Some other useful stuff: isopropyl alcohol & an old tooth brush for cleaning corrosion, a magnet bowl for holding parts.
And some lint free pads for the alcohol. I buy mine dirt cheap at the pharmacy, as they’re technically bandages.
Second the iFixit kit.
Another consideration is some tool to heat up the display or back. iFixit has the iOpener, a silicone “pillow” you heat up in the microwave, which works okay, but you might prefer a heat gun, or a plate (3D printer’s heated bed works too).
And good lighting of course.



