If you are the one providing the technical assistance, open Messages, select the name of the person you plan to help — or send a new message to start the conversation — and click the Details button in the upper-right corner of the window. Click the Screen Share icon, which looks like two overlapping rectangles, and select “Ask to share screen.” (If you’re the one needing the help, you can also reach out via a Messages buddy and use the “Invite to Share My Screen” option.)
Some counterfeit and third party power adapters and batteries may not be designed properly and could result in safety issues. To ensure you receive a genuine Apple battery during a battery replacement, we recommend visiting an Apple Store or Apple Authorized Service Provider. If you need a replacement adapter to charge your Apple device, we recommend getting an Apple power adapter.