This article will help you with different methods to resolve the “com.apple.mobilephone error 1035“. We will start from the most common and simple method to the detailed one.
Voicemail used to be one of the biggest features of a mobile phone plan, but now it’s one of those features not many people use. As a matter of fact, as far back as 2014, NPR explored the reasons why millennials (and those who come after) hate the service.

With this method, you don’t need a third-party app. Call the person you want to chat with, then tap the “Add Call” button on your phone’s screen. Dial your own phone number—the one you’re calling from. This will take you to your voicemail. Once your voicemail has started recording, tap the “Merge Calls” button on your screen. Now, you’ll record your phone conversation onto a voicemail message. When you’re done with the call, you can tap the share button to export it to your Mac via Airdrop, to the Voice Memos app, or transfer it via email or text message. The file is recorded as an M4A, so depending on what you want to do with it, you may need to convert it to MP3 before uploading it to other apps.
When starting a Voice Recording you can choose between 3 different recording modes, you can select either Standard, Interview or Speech-to-text. When using Interview mode the sound is amplified from the top and bottoms of the device and reduces the sound from the sides. This mode works effectively when recording sounds in a noisy surrounding.