Some users unable to sign up with Apple on the Claude iOS app Anthropic reported an incident in which some users were unable to sign up with Apple on the Claude iOS app, according to the company's status page notice. Anthropic's notice offered email and SMS subscriptions for updates and said subscribers would be notified when the incident is updated or resolved. The notice did not state how many users were affected or when the sign-up problem began. Subscribe to updates for Some users unable to sign up with Apple on the Claude iOS app via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident. To receive SMS updates, please verify your number. To proceed with just email click ‘Subscribe’