How can I update to iOS 15 on this device

Sirwacy wrote:

How can I update to iOS 15

To update to the most recent, compatible version of iOS, please see: Update your iPhone, iPad, or iPod touch - Apple Support

And: If your iPhone, iPad, or iPod touch won't update - Apple Support If the above Apple articles do not help, please post back with relevant information. 

How can I update iOS 15 on this device

I am not able to update my iPhone 7 plus

Seemaseem wrote:

I am not able to update my iPhone 7 plus

What happens when you try?