Lost Wifi in Mobile Phone?

[Long_Tran]

Hi all,
My company is using Access Point 7502E. I connect my mobile phone to WIFI. But when i lock screen of mobile phone, Connect is lost (I can't ping to IP of mobile phone--> Internet is drop). then, when I unlock screen, My mobile phone is automatic connect to network. How to fix the problem?
Help me!
Thanks

[Long_Tran]

I use Iphone 6, IOS 10.3.x. I need connect wifi when the screen islocked because I need to be notified when mail (gmail, outlook, skype,...) arrives. And when i use other wifi, no problem.

[Darrel_Rhodes]

Sam is correct. You may be able to disable some of the device's power save features (such as screen dimming, etc.) but the Wi-Fi element of the device will still sleep if the device is in a state where connectivity is not required, such as when the screen is locked, and therefore user interaction isn't possible.

This is common and standard on all mobile phones. I just checked my iPhone6s which was active less than a minute ago but the screen had turned off and was locked and when I hit the home button Wi-Fi was disconnected.

Why is it you need connectivity even when the the screen is locked? Which mobile OS are you using?

Thanks,
Darrel.

[Ondrej_Lepa]

Hi Long,

what phone are we talking about?
Anyway - lot of phones are just turning off the wireless when screen locked.

Regards,
Ondrej

[Long_Tran]

No. I turn off Power Save in mobile phone but no fix problem.

[Sam]

Mobile devices will go into power save mode when they are not being used to prolong battery life, this is normal behaviour. I would advise reading up on DTIM and TIM functionality to help understand why the devices do this.

Hope this helps,

- Sam