Before using a soldering gun to repair electronics, be sure you have the proper safety equipment on hand. It's always best to use a fire-proof surface when working with hot objects. Wear goggles and keep your work area well-ventilated -- solder fumes can cause respiratory problems or eye irritation for some people. In addition, if there is any chance that you'll be re-soldering electrical components inside of devices like cell phones, be careful not to touch any of the silicon components--a static charge could damage them permanently! Use rubber gloves or an anti-static strap for this process whenever possible.