How to Fix ‘com.apple.mobilephone error 1035’ on iPhone

Following is how one can fix the 'com.apple.mobilephone error 1035' on an iPhone for the less-informed.

The "com.apple.mobilephone error 1035" usually occurs when an iPhone has some problems in connectivity or with the network, whereby users fail to set up voicemail greetings. This usually happens in instances where there is a problem with a user's Wi-Fi or cellular network, or when the voicemail setup is incorrect with the provider. 

Error Message

This problem can also be due to poor network settings and issues within connectivity. 

Below are the ways of rectifying this error.

1. Enable Airplane Mode

This problem may be caused by interference between the Wi-Fi and cellular data. You can restart your phone's network connections and power off both by enabling its Airplane Mode. Your iPhone will reconnect to a different network state when you disable it from Airplane Mode.

Pull the notification bar down on your phone.  

Tap on Airplane Mode. After 30 seconds, tap to turn it off using the same procedure.  

Tap to follow the on-screen instructions to toggle Airplane Mode on and off.

2. Switch from Wi-Fi to Cellular Data

If you experience issues connecting Visual Voicemail, then it is time to switch from Wi-Fi to cellular data. Some features may not be available or voicemail may not work properly over public or unstable Wi-Fi networks. For a more stable and open connection, directly connect the phone through the mobile carrier via cellular data.

If Wi-Fi is on, toggle it OFF.

For accessing cellular data, open Settings.

Turn cellular data off and on. Restarting Cellular Data

If you still have problems then you can try accessing your voicemail.

3. Setup Your Visual Voicemail

By setting up Visual Voicemail correctly, it will reconnect your iPhone with your voicemail service at your carrier's side; that way, it can function perfectly. Otherwise, your device could not communicate properly with your carrier, hence affecting your voicemail greetings or messages. So, once you set it up, you can be assured that your smartphone will utilize the voicemail system without problems.

Turn off your WiFi network if it's enabled. 

From the home screen, tap on the phone icon on your iPhone. 

On your dial pad, press the 1 button and hold it for a few seconds to bring up the voicemail options. 

If asked to do so, enter the password you have used when setting up your voicemail.Using the Phone's Keypad 

Go back to the main menu and power off your phone. 

Try to go into your voicemail again to see if the issue persists.

4. Reset Network Settings

If none of the above works, then more serious connection problems may be fixed by restoring your network settings to their original factory settings. This will restore the device to its settings at the factory, deleting any information that may be wrong or damaged. By taking your iPhone to its factory settings in respect of network issues, it ensures that your data is not deleted and that successful connection to your carrier and Wi-Fi is guaranteed.

Now go to the Settings menu followed by the General option.  

Search for "Reset" and then tap on it.

Tap on Reset Network Settings and then enter the PIN in confirmation. This will clear all network settings

Now your mobile device will restart. Now the next thing is Change or set voicemail greeting message.

How to Fix 'com.apple.mobilephone error 1035' on iPhone for the unfamiliar, here it is.

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