apple logo screen changing colours in a loop

Hi there,

If the iPhone cannot be put into recovery mode as well, then the device needs to be serviced for a hardware issue. To learn more about obtaining service for your iPhone, please see the information in the link below.

Apple - Support - Service Answer Center

Have a good one,

Alex H.

Hi gzhu22,

To troubleshoot this issue where your iPhone will not boot past the Apple logo and is showing different colored screens, please follow the directions below.

If your device gets stuck during startup

When starting up, you might see the Apple logo or a red or blue screen for a long time, or your device might restart again. Try these steps:

1. Make sure that you have iTunes 12 or later on your computer.
2. Put your device in recovery mode.
3. When you get the option to restore or update, select Update. This will reinstall iOS without erasing your data.

Get more help

If you still need help after trying the steps above, contact Apple Support.

If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support

Take care,

Alex H.