The steps below outline how you can setup or configure Email, that is any email like gmail, hotmail, yahoo mail and any other custom emails on a Oppo F9 Smart Phone. 

1. On your phone home screen Tap Settings.
2. Tap Accounts & sync.
3. Tap Add account.
4. Tap Personal (IMAP).
5.  Enter your Email address  and tap Next.
6. Enter your email Password  and tap Sign in.
7.  It will start checking incoming server settings.
8.  It will start checking outgoing server settings.
9.  Tap Next.
10.  Again tap Next.
11.  Now Email account is configured.

Follow these steps to enable or configure Portable Wi-Fi Hotspot Settings on Oppo F9 Smart phones. 

1. ​on the phone home screen,  Tap Settings.
2. Tap Other wireless connections.
3. Tap Personal hotspot.
4. Tap Enable your personal hotspot switch to make it enable.
5. Tap Personal hotspot settings.
6. Tap Security.
7. Tap None.
8. Tap Save.
9. Now Personal hotspot is enabled.

If your Oppo F9 smart phone is not responsive, you can restore back to its default settings by following the following stems. 

Following are the steps required to configure Web Access Point (WAP) on your Oppo F9 smart phone. 

1. ​On your home screen,  Tap Settings.
2. next, Tap SIM card & Mobile.
3. Tap Mobile data switch to make it enable.
4. Tap Internet.5. Tap SIM (on which service is enabled).
5. Tap Back icon.
6. Tap SIM (on which service is enabled).
7.  Tap Access Point name.
8. Tap Plus icon.
9.  Tap Name.
10. Enter Your [mobile service carrier] WAP and tap Save.
11. Tap APN.
12.  Enter Internet and tap Save.
13.  Tap Proxy.
14.  Enter [your mobile carrier ping here] and tap Save. 
15.  Tap Port.
16.  Enter 8080 and tap Save.
17.  Ensure APN Protocol should be IPv4 or IPv4/IPv6 than tap Save.
18.  Now account is created.

Below are the steps in how internet settings on Oppo F9 pro smart phone can be configured. ​

Many android Mobile users are vulnerable to phone hacking and security threats. Even the features/Apps  available on android  mobile can  be windows for hackers. You as a user must take responsible for yourself.  Here are a few security tips you might want to consider when protecting your android phones