Your profile can be edited in the app. Just go to the Settings tab, then tap "Profile". From there, you can:
Update your profile photo
Tap your profile photo, then tap "Update". You can take a photo or choose a saved photo from your camera roll. This is the picture your provider sees when coming to meet you, so help them out by making sure it is clear and looks as much like you as possible!
Tap your name, then tap "Update". Type in your updated name and tap "Save".
Edit Phone Number
Tap your phone number, then tap "Update". Enter your updated phone number and tap "Save".
See also: How do I edit my payment information