Having Trouble with Your iPhone? | Troubleshooting

Solutions to Common Issues
The following is a collection of resources for solving common issues you may encounter with your iPhone. All of these resources are from Apple Support which strives to provide Apple Product users with tools and resources that allow them to feel confident and comfortable using their technology. Those who would find the resources on this page the most helpful are those who are having an issue with their iPhone that they are unsure how to fix (troubleshoot). The sources are listed in the order in which would make sense if one were setting up a brand new unopened iPhone, however users are welcome to use the resources as best fit their needs!
Resource Articles from Apple Inc.
Apple ID Issues:
One of the most common problems people encounter with iPhones is related to the Apple ID which is the unique ID for signing in/out of devices. These resouces will help you reset your password if your forgot it, and also figure out what your Apple ID is (the email you set up with your Apple ID) if you can't remember.
If you forgot your Apple ID password
If you forgot your Apple ID email
Screen/Display Issues:
If your iPhone is frozen, unresponsive, or won't turn on
If you see the iTunes logo or a computer icon with a cable running to it
If your iPhone screen is physically damaged
App Issues
If an app quits unexpectedly, crashes, or won't open
"Cannot Get Mail" If your email will not refresh
How to check for and install an iOS Update
If you see an unfamiliar charge from Apple or iTunes in your bank statement
If your payment method is declined in the App Store or iTunes
Cellular Service Issues
Trouble activating your iPhone
If you see 'invalid SIM' or 'no SIM' on your iPhone"
If you see 'No Service' or 'Searching' on your iPhone
Remove unwanted apps
Texting Issues
If you cannot send or receive texts messages on your iPhone
Why are some messages are blue and some are green?
Change the wallpaper (screen background)
Remove unwanted apps
Contact AppleCare Support if you still need help!
Official AppleCare Support Site
Call: 1-800-275-2273