I recently reinstalled Grab on my iPhone, choosing the Sign In with Apple option this time for better privacy. At first it worked fine, but after I gave Grab my phone number it forced me to use Sign in with Facebook because I had previously used it to sign in, allegedly for “security”.
This is silly. I don’t want to use Sign in with Facebook. I hate Facebook and want nothing to do with them. I want to use Sign In with Apple, but this app won’t let me. Also, practically speaking, what is a user supposed to do if they’ve deleted their Facebook account? Can they never use this app again until they’ve changed their phone number? In short, this seems like either a.) a bug that is resulting in poor UI/UX, or b.) a sneaky attempt to force users to allow Sign In with Facebook, and all the tracking and data harvesting that this entails.
Per Apple’s policies, any app that offers Sign in with Facebook HAS TO offer Sign In with Apple, so this seems like a clear violation of the official requirements for iOS developers. Maybe just a bug? If so, fix it please. If not, shame on you. I am reporting this to Apple.