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Here I have a Vivo Y71, let me show you how to use secret codes on the following device
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So at the very beginning let's open the phone's dialer and let's use the first secret code
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so the phone info testing menu. Let's use this code, asterix pound, asterix pound, 4838, pound asterix, pound asterix
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As you can see the following menu pops up, here you can open phone information and you
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can read here IMEI number, current network, signal strength. You can also here run a ping test or use more key in order to view service dialing numbers
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to see the contacts in the sim card and other stuff. Let's go back, now you can also open user statistics, here you've got the list of all
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apps and you can read the last time used and usage time. You can also here select Wi-Fi information and here you've got access to Wi-Fi API, when
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you can disable network, enable network, get configured networks or get connection info
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You can also go back and you can check out Wi-Fi status, here you've got statistics about
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your Wi-Fi or you can select Wi-Fi config and here you should find the configured networks
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on your device. All right, let's use the back key a couple of times, then you quit this mode, now let's
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open the engineering testing, so let's use the asterisk pound, asterisk pound, four six
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three six, pound asterisk, pound asterisk and the battery capacity test pops up, let's
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tap it, here you can use the battery temperature, you can read the charge error, you can read
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the battery info and other stuff. Let's go back, let me quit this mode and let's open the calendar info, so we 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, so here you can read a few information from your calendar
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Let's go back again and it's time to open the Google Play service mode, so let's use
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here asterisk pound, asterisk pound, four two six, pound asterisk, pound asterisk and
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as you can see the following screenshot pops up, let me do it again, four two six, pound
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asterisk, pound asterisk, the Google Play service just pops up in front of you and you
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can also check out the advanced IMEI mode, let's use asterisk pound, zero nine pound
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and as you can see the following menu pops up with the barcodes and product number, product
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name, software version. Let's go back, at the end let me show you the simple method to checking IMEI mode, let's
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use the asterisk pound, zero six, pound and IMEI mode just pops up
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So that's it, everything went well, thank you for watching, please subscribe our channel, leave a thumbs up under the video
