I recently upgraded from an iPhone 15 because its battery was draining extremely quickly, the screen had a significant crack in one corner, and the phone had become noticeably laggy. I also noticed apps reappearing or showing up even though I had not installed them, which made me uncomfortable enough to stop using it.
Rather than throwing the phone away, I'd like to use it as a practice project. I'm considering replacing the battery and screen myself, not necessarily to save money, but to learn whether I can handle the repair. I've been watching tutorials and researching the tools and parts involved, but I'd appreciate advice from people who have repaired iPhones or other Apple devices. How difficult is it in practice, what tools are essential, and what mistakes or complications should I expect?
3 Answers
For a learning project, go for it—but treat the phone as already disposable and expect the first attempt to be stressful. Start with a detailed model-specific repair guide and read the entire procedure before buying parts. The battery adhesive is usually the most frustrating part; pulling at the wrong angle or puncturing the cell is dangerous. If you don’t already own precision tools, the total cost can approach what a repair shop would charge, so the main payoff is the experience rather than savings.
It’s doable if you’re patient and comfortable working with tiny connectors, adhesive, and fragile cables, but it isn’t an especially forgiving first repair. You’ll need the correct pentalobe and internal screwdrivers, plastic picks, tweezers, a suction tool, replacement adhesive, and a safe way to handle the battery. Keep track of every screw because they are different lengths, and putting one in the wrong hole can damage the phone. Before opening it, make a backup and consider erasing the device afterward, especially since you noticed unfamiliar or returning apps.
The biggest catch is that replacing parts may not restore every feature perfectly. Some iPhone components are paired or serialized, so a replacement display can produce warnings or lose features such as True Tone unless the original data is transferred with specialized equipment. Face ID and certain other modules are particularly sensitive, and damaging their cables can make them expensive or impossible to restore. Apple’s self-service program and reputable repair guides can tell you which parts are supported for that specific model.
A repair guide that lists the difficulty and estimated time is really useful here. I’d also practice opening the phone slowly instead of trying to finish in one sitting, since rushing is when cables and clips usually get damaged.