Android - Other

Putting phone in airplane mode.

1. When you see the FRP page that requires you to enter the Google account previously synced to the phone, long press the @ on the keyboard until a window pops up.
2. Tap Google Keyboard Settings on the pop-up window.
3. Click on the ☰ on the upper right and choose Help & Feedback item. Select a random item and long press to copy some of the text. You will see a web search icon on the upper right. Click the icon and on the search field appearing, type Settings.
4. You'll then enter the Settings app of the phone. Go to Developer Options (if the option is not in the list, tap on Build Number 7 times to pull out Developer Options ) and allow OEM Unlocking.
5. Long press the Power button to reboot the phone. When setting up the phone, inteads of the FRP page, you'll see Add your account page. Add a Google account and you can enter the device now.

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2. evozi

1. Configure on-device developer options.
2. Enter Developer options.
3. Turn on Developer options.
4. Change Window animation scale to Animation scale 0.5x.
5. Change Transition animation scale to Animation scale 0.5x.
6. Change Animation duration scale to Animation scale 0.5x.
7. Turn on Force GPU rendering.
8. Turn on Disable HW overlay.

Contact Device Service Center

• Choose when encounter hardware problem
• High success rate
• Easy to operate
• Required long time

Enter Safe Mode

• Choose when encounter some software issues
• Medium success rate
• Complex to operate
• Required long time

Factory Reset Your Android

• Choose when encounter some software issues
• Medium success rate
• Complex to operate
• Required long time

Pull Battery from Android

• Choose when encounter only minor issues
• Low success rate
• Easy to operate
• Required short time

Wipe Cache on Android

• Choose when encounter some software issues
• Medium success rate
• A little bit complex to operate
• Required a little bit long time

Download SDK Platform-Tools for Windows

Download SDK Platform-Tools for Mac

Download SDK Platform-Tools for Linux

Reference

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2. You'll see 2 IMEI number, but the important part is the 7th & 8th number :

• If the 7th & 8th number is 02 or 20, your phone is from China and the quality is poor.
• If the 7th & 8th number is 08 or 80, your phone is from Germany and the quality is normal.
• If the 7th & 8th number is 01 or 10, your phone is from Finland and the quality is good.
• If the 7th & 8th number is 00 or 03 or 04, your phone is from Original Factory and the quality is excellent.
• If the 7th & 8th number is 13, your phone is from Azerbaijan and the quality is very poor.

PC

1. Go to Settings > System > Projecting to this PC.
2. Change the settings as below :

• Some Windows and Android devices can project to this PC when you say it's OK - Available everywhere
• Ask to project to this PC - First time only
• Require PIN for pairing - Never

Mobile

1. Go to Settings > More > Cast / PlayTo.
2. Turn on WIFI and Bluetooth on your phone to use the Wireless Display.

Once connected, your smartphone screen will be displayed in the Connect App on your Windows PC.

1. Open Google Play Store.
2. Click ☰.
3. Go to Settings.
4. Go to About section and click on Play Store version.

Java SE

Not reading the google play Policy

Begin first to read the policy to be sure that your app is compliant with the google privacy policy.

Publishing Directly in Production Canal

• Production : That’s mean when an app is here, it’ll appear on play store and people can see it and download it. It’s the main channel.
• Internal Test : Here’s you’ll create a diffusion channel with emails that you need to be tester, it’ll not be public but just the internal tester which will be able to download it.
• Open-testing : Available on play store but limited number of tester
• Closed-testing : The same as the Internal but this one is available in play store but just for tester.

Not having a Privacy Policy Website

It’s very important when you publish your app, to have a privacy policy website that describe correctly what your app stand for.

This is the way you communicate with google team and also with your users.

Forgetting versioning

Versioning is the way that every programmer identify their code and when you publish an app on play store, you have to upgrade the version of your code to help google to know that it’s a new version.

You can know more about that here : https://developer.android.com/studio/publish/versioning

Use different hash key

The hash key is the signature of an app and in when you build your app for production, in React Native, Flutter or android, the program will generate a key for your app and this key will be unique for your app.

In case you publish other version of your app, but with a different key hash, this will not be published by google for security reason.

1. Download specific audio codec pack from here.
2. Open MX Player.
3. Open Settings > Decoder > General > Custom codec.
4. Locate the downloaded .zip file and click on it.
5. Relaunch MX Player.