If you have issues with your iPhone, try these tips first.
Acoustic-speaker/microphone/receiver
Can’t hear through the receiver or through speaker, and can’t be heard
When I adjust the volume while at the Home screen, on the phone, or listening to music, it shows an icon indicating headphones are installed, but none are installed.
Low microphone volume
Sound from the speaker is low or muffled or I sound muffled or low when speaking into the mic
No sound through stereo headset
Power/Battery
Battery does not charge from the iPhone charger
Battery life seems short
iPhone acceptable temperatures
Will not power on
Display
Display image issues
Display does not go into landscape mode
Multi-Touch display not responding to touch
Display has no backlight or dark screen
Display does not adjust brightness automatically
Display shows a white screen
General phone use
Unable to make or receive calls
iPhone will not lock when answering calls
Interference while in carrying case
Will not go into airplane mode
"No Service" Message
Connectivity/Networking
No cell signal strength anywhere
Intermittent service in an area with good coverage
Wi-Fi issues
Not seen in iTunes/USB connection issues
Buttons and Switches
Sleep/Wake button will not lock or unlock
The Home button is slow to respond
The Home button is not working
Camera
Camera is not functioning
Accessories
Third-party accessory not working
Works with iPhone compatibility message
The stereo headset mic button is not functioning properly
Bluetooth headset isn’t responding or working correctly
SIM
SIM card not detected by iPhone
Compass
Compass not functioning on the iPhone 3GS
Issue not resolved
My issue is still not resolved. What do I do next?