Hi ​@Amybamford22, 

Thanks for getting in touch I can understand how frustrating this must be, especially with a device as new as your iPhone 17 Pro Max. This isn’t the experience you should be having after only a few months I do apologise. 

Since you are out of the returns window you will not be able to return the handset however I can confirm you are still in warranty so you can take the handset to an Apple store or Currys store for a store technician to look into the issue. In the meantime, you can also try the below:
 

Step 1: Check for iOS updates

Please go to:

• Settings > General > Software Update

If there’s an update available, install it.
These updates often fix freezing and performance bugs.

Step 2: Check storage

Go to:

• Settings > General > iPhone Storage

If your storage is nearly full, this can cause:

• Apps freezing
• System lag
• Crashes

👉 Ideally, you should have at least 5–10GB free

Step 3: Force restart the device

This helps clear temporary system issues:

1. Press and release Volume Up
2. Press and release Volume Down
3. Press and hold the Power button until the Apple logo appears

Step 4: Check if specific apps are causing it

• Is it happening with all apps, or just certain ones?
• If it’s specific apps, try:
• Deleting and reinstalling them
• Making sure they’re fully updated

Owethu