You can backup and restore your contacts with every phone. You can use your SIM card to transport the contacts over from your old phone. You can find steps for transferring contacts from the SIM in the user guide. See Phones & Internet Devices.
Your photos and media
First, be sure to take your SD card out of your phone before you send it back to us! This can sometimes be referred to as your memory card or media card. If you're not sure how to find and safely unmount your SD card, you can select your device and find that information below. On most phones, your pictures will be automatically saved to your SD card! To use your SD card to transfer your pictures and media, you can refer to your phone's user guide which can be found below, after selecting your device. See Phones & Internet Devices.
No matter how great the information above is, sometimes we still need a little extra help to get our phone back to its former glory.
Now, keep in mind there are quite a few different types of phones out there. If you need some more specific info or just want to be able to ask some questions, visit the Support Community using the links below based on your phone type. If you have additional setup questions for your phone, we can still help!
Take a look here to find your Support Community. These forums are filled with other helpful T-Mobile folks asking and answering questions all day long! Give it a read even if you don't have questions, and you'll find some great info!