As you may be aware, Apple launched iOS 11 last Tuesday, 19th September, 2017
However, there is a bug in the latest iOS which affects the native Apple Mail app (Mail.app) on your iPhone or iPad which will prevent you from sending or replying to emails.
You might see an error message that says "Cannot Send Mail. The message was rejected by the server."
This will affect you if your email account is hosted by Microsoft on Outlook.com or Office 365, or an Exchange Server 2016 running on Windows Server 2016 you will have this issue.
Although, Apple and Microsoft are trying to resolve this issue - there has been nothing released yet.
WHAT DO YOU DO?
You have these immediate options:
B. Rollback to a previous version of iOS
Call us if you are stuck and still having any issues on 1300-SENSIBLE (736-742)
Nowadays, smartphones are filled with all sorts of personal data including contacts, schedules, photos, videos, documents, and more. Whether you're selling or giving away your old phone, you'll want to both save this personal data and prevent others from gaining access to it.
Here are a few steps to prepare your iPhone or Android phone for its new owner:
Once you've reset your old phone to its factory settings, you may want to unlock it. Unlocking a smartphone allows it to be used with various service providers. If you don't unlock your phone, it will be tied to your service provider and may be harder to sell.
Some older smartphones (like Blackberries) also have separate mini-SD storage cards used to store photos, etc. Ensure you remove this card or delete the data on this storage device as well