Why I lose Wi-Fi connection when I turn off my phone screen?

[InfinityVive]

I have a samsung Galaxy J7 Pro, I am having a problem with Wi-Fi, When I download big stuff 600 MB+ and then turn off my phone screen the Download fails, this problem happens in Googleplay and in-game downloaders but not in Galaxy store, I tried clearing cache, restarting router couple time, forgetting Wi-Fi and connecting back, Also I tried downloading this from my other phone Samsung note 5 and no problems, so the problem is in the phone, Please tell how to fix it, I am running Android 9.0 .

 

[mikedt]

Check the Settings, for stay connected when screen is off, or is sleep.

Might be similar to this.

This is a Huawei, Android 9 Pie.

I don't have my Samsung here at moment, so can't tell you where this setting is exactly

 

[MoodyBlues]

then turn off my phone screen the Download fails

Check your Wi-Fi settings. We're using different Android versions, so your steps may vary from mine:

Settings | Network & Internet | Wi-Fi | Wi-Fi Preferences

Make sure there's nothing there that could be causing the problem.

 

[InfinityVive]

Check the Settings, for stay connected when screen is off, or is sleep.

Might be similar to this.

View attachment 142934
This is a Huawei, Android 9 Pie.

I don't have my Samsung here at moment, so can't tell you where this setting is exactly

Can't find that option.

 

[InfinityVive]

Check your Wi-Fi settings. We're using different Android versions, so your steps may vary from mine:

Settings | Network & Internet | Wi-Fi | Wi-Fi Preferences

Make sure there's nothing there that could be causing the problem.

can't find that option too.

 

[mikedt]

Can't find that option.

Maybe Samsung disabled or removed it on that phone? Is it a carrier version phone?

I don't know the J7 Pro at all. But I know my S7 with Android 8 Oreo definitely will stay connected when sleep or screen off.

 

[svim]

https://www.androidcentral.com/android-101-save-battery-keeping-wifi-alive

Double-check that this option isn't just buried at deeper level somewhere in your Settings menu. Different manufacturers often alter the user interface, especially Samsung. Check in your Settings >> Wi-Fi >> More menu, a lot of options have to get nested inside other options because they might be contextually related or simply because some features are just complicated.