Please make a separate Contacts App. When I'm on my PC then the contacts via ProtonMail works fine as I primarily use the email address stored in Contacts. However, when I'm on my smartphone I primarily use the Contacts to either make a phonecall or start a text message. Having to first open ProtonMail just to add a new phone number not only adds a layer of complexity, it makes my (new) friend wonder if I do actually have control over my phone, and why is it taking so long just to save a phone number.
Please make a separate Contacts App. When I'm on my PC then the contacts via ProtonMail works fine as I primarily use the email address stored in Contacts. However, when I'm on my smartphone I primarily use the Contacts to either make a phonecall or start a text message. Having to first open ProtonMail just to add a new phone number not only adds a layer of complexity, it makes my (new) friend wonder if I do actually have control over my phone, and why is it taking so long just to save a phone number.