> For the complete documentation index, see [llms.txt](https://docs.didforsale.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.didforsale.com/sip-trunking/configure-zoiper-app/iphone-app.md).

# Iphone App

Step 1: Create SIP account on your DIDforsale portal

Step 2: Download the app on your device. 

Step 3: Open the application. Click on settings on the first screen that appears.

![Zoiper App](/files/-LZG3CRfge-QKyEv8RE6)

Click on "Accounts".

![Accounts](/files/-LZG3d-NaZX2dtLggYdz)

Click on SIP accounts and click on Yes when the pop up opens up asking "Do you already have an account".

![](/files/-LZG3gvVyyT77KxhA_NH)

Click on "Manual Configuration".

![Manual configuration](/files/-LZG3jaQ4Bgv2oFWoJ5P)

Go to SIP Account.

![](/files/-LZG49DAdgdVhNrJKene)

Enter the Account name domain, username, and password. Select "use outbound proxy".

![](/files/-LZGCFUi54-wu0Fs0f9k)

In Additional Settings, click on "Audio Codecs" and in the next screen, update as shown below.

![](/files/-LZG4YHegH-pOFCjfku1)

Enable a-law and u-all.

![](/files/-LZG4N0JL89TdxFFtxaD)

In Network Settings: Enable IPv6, Enable STUN. In Additional settings, select enable on start.

![Network Setting](/files/-LZG4HrkvhJZVuXOlgKQ)

Click on Register.

![Register](/files/-LZG99UEwe8HsTJD9om5)

Wait for the Registration Status to show "OK", as shown below.

![](/files/-LZG9JgLXSWQQY8WLnh_)

Finally, in Accounts, you can see that your SIP Account is enabled( with a green tick mark).

![Registered](/files/-LZGCd71_xq5tooIU3Xj)