I want to pay for GBWHATSapp
how to update iOS 15
iPhone 6
iPhone 6 is an outdated iPhone it can’t be update to a higher iOS (13 and later).
The last security updates iOS 12.5.6.
Go to Settings -> General -> Software Update -> Download and Install (if you haven't already done that).
WhatsApp requires iOS 12.0 or later
Most apps require iOS 13.4 or later.
Considering a newer type of iPhone?
Read this before you buy a newer type iPhone.