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Here I have OPPO F3 and let me show you how to use here secret codes on the following device
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So at the very beginning let's start by using the phone's dialer. Let's open the following phone icon and let's use the first secret code
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So let me open the engineer mode. Let's use asterisk pound, asterisk pound, three six four, six six, three three, pound
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asterisk, pound asterisk. As you can see the engineer mode just pops up
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Here you can check out the telephony section, connectivity, here you can use the Bluetooth, Wi-Fi
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You can check out hardware testing and test your audio, camera, sensors
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You can see location settings, lock and debugging and others. That's it
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Let's go back to quit this mode. You can also use the second engineer mode
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Let's use just this code, asterisk pound, eight zero eight, pound. And as you can see the following engineer mode just pops up
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Here you can check out the assembly test project, device debugging. For example you can test your vibration
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Here you can see the camera, configuration, media debugging. Here you can perform the Wi-Fi test
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Here you can see communication debugging and here you've got others. For example you can check out the software version
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Alright let's go back. Now let me show you the special part of the engineer mode
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Let's use this code, asterisk pound, eight nine nine, pound. And as you can see the following engineer mode just pops up
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Here you can use the following information. For example you can perform the manual test
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You can here perform the Bluetooth test. And you can check out also for example the product information and IMEI info
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That's it. So now you can go back to quit this menu and it's time to check out the ColorOS version
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So let's use this code, asterisk pound, one two three four, pound
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And the ColorOS version just pops up in front of you. Alright so tap OK to close this window and let's start opening the Android testing menu
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So let's here input asterisk pound, asterisk pound, four six three six, pound asterisk
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pound asterisk. And the Android testing menu just pops up. Here you can navigate by tapping appropriate options
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You can choose here phone information, when you can check IMEI, you can read the current
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network, signal strength, location. You can run a ping test or use more key in order to select radio band, view sim address
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book, view fixed dialing numbers or get PDP list. Use back key again and it's time to open the battery information
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Here you can check out the battery status, battery health or the battery technology
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Use back key one more time, check out usage statistics. Here you've got the counter of your apps and usage time
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Now let's open WiFi information. Here you can select WiFi API, when you can disable network, disconnect network, enable
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network or get connection info. You can also go back and choose here WiFi config and see configured networks
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Alright, let's go back again and let's choose WiFi status. Here you can refresh all stats or run a ping test
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So let's quit this menu and now it's time to open the calendar info so you need to use
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this code. Asterisk pound, asterisk pound, two two five, pound asterisk, pound asterisk
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And the calendar info just pops up in front of you. Use back key, now it's time to open the Google Play service mode so let's use this code
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Asterisk pound, asterisk pound, four two six, pound asterisk, pound asterisk and Google
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Play service just pops up in front of you. You may also open here debug UI so let's use this code
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Asterisk pound, asterisk pound, seven five nine, pound asterisk, pound asterisk and debug
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UI just pops up. Here you can view client IDs or change OEM mode
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If you would like to quit this mode let's use the back key and at the end let me show you how to check the IMEI number on this device
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Let's use this code asterisk pound, zero six, pound and the IMEI number just pops up
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So tap OK to confirm it and everything went well. Thank you for watching
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