How to the Insert SIM Card and Battery into Samsung Galaxy S3

Your SIM and battery must be inserted before you can use your mobile phone.

1. To remove the back cover, you must turn the back of your Samsung Galaxy S3 towards you.
2. Hold on the top of the back cover and remove it.
3. Place the SIM by sliding it in the slot located below the battery holder.
4. To insert the battery, you just have to match the battery contacts with the contacts in your mobile phone, and press the battery into place.
5. Place the back cover on your mobile phone, bottom first, and press it into place.