iPhone 6s plus wifi disconnect after locking

I recently bought iphone 6s+ and running iOS 9.2.1..Whenever I lock (sleep) my iPhone,wifi automatically disconnects and when I unlock or press power button,it automatically connects..I dont think it is any kind of feature bcoz I am having delayed notifications due to this from apps like whatsapp,gmail etc..

Is it normal behaviour from iphone?

Android have 'keep wifi during sleep' option..I am missing that badly

Please help anyone..

P.S. battery saver mode is off..background app refreshing is on for all apps..I even tried reset all settings and network settings..what should I do?

iPhone 6s Plus, iOS 9.2.1, India

Posted on Feb 21, 2016 6:04 AM

Top-ranking reply

TheyCallMe_X

Level 1

4 points

Posted on Jan 21, 2018 11:42 PM

It’s actually quite simple. WMM APSD (Automatic Power Save Delivery) is a power saving feature featured on some wireless routers. It’s an option that allows the wireless chipset in smaller devices or mobile devices to turn on and off as needed. In theory it should improve battery life seing as your not running two radios. Yes it is true that WiFi saves more power than cellular, but that’s only when data is being transferred (downloading a large file, streaming video etc.) When your iPhone goes into sleep mode large amounts of data (usually) are not being transferred (think of just push notifications mainly) so WiFi turns off and cellular radio kicks in.
If you don’t want your iPhone to keep disconnecting while in sleep mode, go into your router and look for WMM APSD or something similar to power save mode under wireless settings and disable it. Should fix all your problems. ASUS routers tends to come with the option enabled. Also take a look into beamforming. This can sometimes knock off iphones. You may want try disabling those options as well.
Also, Android actually has an option to turn this on and off. I’ve owned every single Nexus, and I do recall under advanced WiFi options there is a (Stay connected to WiFi Always) option that you can change.

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65 replies

Aug 14, 2016 5:13 PM in response to adityameena26

I had the same problem. What solved it for me was disabling "Wifi Assist" in Settings -> Cellular. Wifi Assist is supposed to improve Internet connectivity by switching to cellular data when on a weak wifi: About Wi-Fi Assist - Apple Support

Aug 15, 2016 5:16 AM in response to tobias257

Well, after some further testing I had to conclude that turning off "Wifi Assist" doesn't help. Meh. Still stuck with this problem. Switching to a fixed wifi channel didn't help. It's a 5 GHz wifi by the way, from a Verizon Jetpack Mifi router.

Oct 12, 2016 2:28 PM in response to adityameena26

Recently, I had upgrade to 10.0.2 but my wifi disconnect when I lock the screen. Though I have been tried all the solutions apple proposes; I even reset my network many times this may solve the problem for day or two but after that the same problem appears again!!!

Oct 12, 2016 4:00 PM in response to A .Dannouf

A .Dannouf wrote:

Recently, I had upgrade to 10.0.2 but my wifi disconnect when I lock the screen.

Unless you have the phone plugged in to a power source, that's exactly what it's supposed to do.

Ness1uno

Level 1

18 points

Oct 12, 2016 4:15 PM in response to IdrisSeabright

Abosolutely not true.

It's a router problem.

I had a router ADB and my iPhone stays ALWAYS connected to wifi even after 20 hours in standby.

Then I changed router and iPhone disconnect wifi after 2 minutes in standby.

Now I've an Airport Express and my 2 iPhones and my iPad stay ALWAYS connected to wifi.

It's a router problem!

Oct 12, 2016 4:28 PM in response to Ness1uno

Ness1uno wrote:

Abosolutely not true.

It's a router problem.

I had a router ADB and my iPhone stays ALWAYS connected to wifi even after 20 hours in standby.

Then I changed router and iPhone disconnect wifi after 2 minutes in standby.

Now I've an Airport Express and my 2 iPhones and my iPad stay ALWAYS connected to wifi.

It's a router problem!

Believe whatever you like. It doesn't change reality.

Nov 24, 2016 8:13 PM in response to A .Dannouf

I have the same problem. iPhone 7 Plus. Mine sometimes doesn't reconnect until I turn wifi off and back on. On my phone. All the while, my wife's iPhone 6 stays connected constantly. Same router of course. So I highly doubt it's the router. If it's supposed to "sleep" than why doesn't my wife's phone do it. AND why do I have to disable then re enable wifi for it to work.

Nov 29, 2016 11:29 AM in response to Ness1uno

That comment is really untrue.

My phone has this exact problem. Disconnects from wifi and 3G when my phone has been locked. Doesn't matter where I am, what wifi I'm connected too - it's all the same...

Any real solutions ?

Dec 26, 2016 3:24 PM in response to tobias257

I just got the mifi Jetpack from Verizon and have an iPhone 5 with 8.4.1 and I want to keep both in the car and have the WiFi ready to go when I drive without touching either device and I can't seem to make it work. I've tried setting auto lock to never on iPhone and made changes to the settings on the Jetpack to never power down or sleep and it disconnects wifi after a while still. Did you ever find a solution?

Jan 8, 2017 8:31 AM in response to Ness1uno

Quite misleading.

If you're plugged in to power source, your WiFi will stay connected. That is how it works for iPhone.

Aug 2, 2017 10:34 PM in response to Ness1uno

Being arrogant won't make you right

Sep 6, 2017 5:07 PM in response to K_Purdy

I’d like the WiFi to stay on too. But maybe the reason it turns off is to save the battery (thinking WiFi would use more battery), idk though.

izzat137

Level 1

4 points

Oct 31, 2017 3:05 PM in response to IdrisSeabright

so what? We are here for Apple team support and they are hiring an arrogant who just negates many people saying the same thing? waw clearly it is something

Oct 31, 2017 5:46 PM in response to IdrisSeabright

IdrisSeabright wrote:

An arrogant.....what? You appear to be missing a noun to go with that adjective.

This sentence no verb.

Rishi31

Level 1

4 points

Nov 2, 2017 10:09 AM in response to adityameena26

How to change the settings of the router? Can you please help me by answering this question?

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iPhone 6s plus wifi disconnect after locking