There are many types of iPhone repairs that you can do yourself, without having to take it to the Apple store or a professional repair shop. Here are some of the most common types of iPhone repairs:

-Cracked screen: If your iPhone screen is cracked, you can replace the glass yourself with a new one. You will need to purchase a replacement screen and some tools, but it is a relatively easy repair to do.

-Battery replacement: Over time, the battery in your iPhone will lose its ability to hold a charge. When this happens, you can replace the battery yourself with a new one. This is another easy repair to do, and you can find replacement batteries online or at the Apple store.

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-Water damage: If your iPhone has been dropped in water, you may be able to fix it yourself if you act quickly. Take the phone out of the water as soon as possible and remove the SIM card and any other removable parts. Then, put the phone in a bag of rice and let it sit for 24 hours. This will help absorb any moisture from the phone. After 24 hours, try turning on the phone; if it doesn't work, you'll need to take it to a professional for repairs. 

-Software issues: If your iPhone is having software issues, you can try resetting the phone and restoring it from a backup. If this doesn't work, you may need to take it in for repairs. 

-Hardware issues: If your iPhone is having hardware issues, such as a malfunctioning camera or microphone, you may need to take it in for repairs. These types of repairs are usually more complicated and require specialized tools and skills.