How do you change POP to IMAP on your iphone

Hey there beth245,

Thanks for reaching out to the Apple Support Communities. To get started, the setting to choose whether your email account is using POP or IMAP would need to be chosen manually when setting up the email account. If an account on your iPhone is already set up, you'll want to remove that account, and then set it back up with the steps shown in the following resource:

Add and remove email accounts on iPhone - Apple Support

Log out of or remove email accounts

1. Go to Settings  > Mail > Accounts.

2. Tap the email account you want to remove, then do one of the following:

- If you’re removing an iCloud email account: Tap iCloud, tap iCloud Mail, then turn off “Use on this iPhone.”

- If you’re removing another email account: Turn off Mail.

Note: To remove the email account from all apps on your iPhone, tap Delete Account.

Add an email account to your iPhone, iPad, or iPod touch - Apple Support

How to set up your email account manually

If you need to set up your email account manually, make sure that you know the email settings for your account. If you don’t know them, you can look them up or contact your email provider. Then follow these steps:

1. Go to Settings > Mail, then tap Accounts.

2. Tap Add Account, tap Other, then tap Add Mail Account.

3. Enter your name, email address, password, and a description for your account.

4. Tap Next. Mail will try to find the email settings and finish your account setup. If Mail finds your email settings, tap Done to complete your account setup.

Enter account settings manually 

If Mail can't find your email settings, then you need to enter them manually. Tap Next, then follow these steps:

1. Choose IMAP or POP for your new account. If you aren’t sure which one to choose, contact your email provider.

2. Enter the information for Incoming Mail Server and Outgoing Mail Server. Then tap Next. If you don't have this information, try to look it up.

3. If your email settings are correct, tap Save to finish. If the email settings are incorrect, you'll be asked to edit them. 

If you still can't set up your email account or save your email settings, contact your email provider.

Let us know if that helped.

Have a great day!