Denying the app access to: the phone owners full name, contacts stored on the phone, the phones calendar, permission to send and receive SMS messages, and identifying device information resulted in annoying nags containing some excuse as to why they would like access to said permission.
However, if you deny it access to: All files on the phone and MicroSD card, phone camera, phone microphone, and phone vibrator motor, the app will punish the user by disabling various features in the app that will most likely operate just fine with that permission denied.
- -Many users think that when they upload photos to Instagram, they retain all rights or it becomes public domain. This is far from the truth. When you upload a photo to Instagram, Instagram gains all rights to your work and they can do anything they want to it[2]. Since most users don't bother reading the terms of service, they are ignorant of this and will often use the work they uploaded to Instagram on other platforms; doing so is against international copyright law treaties. Basically, the user is breaking copyright laws for simply using their own work they posted to Instagram on other platforms
-In order to sign up for the app, you must provide either a telephone number or an email address. You will not be allowed to create an account if you provide none of the above. This is obviously a method Instagram to uniquely identify you.
If you provided Instagram with a cellular telephone number and uninstalled the app, you will get constant nags to "see what's new on Instagram". Fortunately these nags will go away after about a month, and can be blocked by simply blocking the number