Whatsapp Desktop and Web don't work when my Samsung A21S is locked - Samsung Galaxy A21s Questions & Answers

Hi everyone!
I'm having some difficulty using whatsapp desktop/web with this phone. When I lock it, it stops connecting to my computer. I have a stable wifi connection.
Steps I tried to fix this problem:
Disabled battery optimization for whatsapp;
Turned my wifi to unmetered;
Disabled battery optimization for system apps.

Related

constant data connection

so I know theres already a dead thread on this....but it got no where.
So here goes, my x10(both on 1.6 and 2.1) seems to ALWAYS maintain a data connection whether it be wifi or hsdpa. This occurs with every running app/service disabled background data off etc etc. The only solution ive found is to switch off both wifi and toggle the apn/data connections off. I'd rather not have to do this as realistically I'll end up forgetting to toggle them off.
Shouldn't android simply connect on demand rather than maintaining the connection constantly?
and before anyone says it, it's not the data consumption im frustrated with...it's the unnecessary battery drain.
Bump....
Sent from my U20i using XDA App
Android keeps an active connection for things like:
1) syncing contacts & email
2) the ability to use Gtalk
Have you actually checked how little the active connection uses (not much)
constantly maintaining a data connection does indeed drain the battery in comparison to not keeping one. I assume the 'how little' it drains is based on that half assed percentage indicator android gives us?
If you actually read the first post you'd see that I'm specifically interested in having the connection on demand. If I'm not syncing my email or contacts at the time why on earth should it be maintaining a connection.
i had a hd2 it also had a constant connection.but on wm there is an app which turns off the connection and turns it on When needed.
isnt there an apps like that on android.
just use the APN On/Off widget and put it on your home screen, quick and easy and turns on/off with one press

Turning on wifi on demand

Is there a way to reconnect to wifi whenever an application accesses the network?
Background: I have a rooted e-book reader that runs Android 2.2 (Sony Reader PRS-T1). The system offers an option to automatically enter wifi standby mode when the connection is idle, which I like: This behavior saves a lot of battery juice when reading an e-book.
Some of the preinstalled apps know how to reconnect the wifi whenever they need network access. Unfortunately, conventional Android apps do not know how to do this and fail. For example, I have installed the Kindle for Android app, and it fails to sync reading positions unless I have manually re-enabled the the wifi before trying to do so.
Is there a method to leave wifi standby mode and reconnect to wifi whenever there is demand?
altruizine said:
Is there a way to reconnect to wifi whenever an application accesses the network?
Background: I have a rooted e-book reader that runs Android 2.2 (Sony Reader PRS-T1). The system offers an option to automatically enter wifi standby mode when the connection is idle, which I like: This behavior saves a lot of battery juice when reading an e-book.
Some of the preinstalled apps know how to reconnect the wifi whenever they need network access. Unfortunately, conventional Android apps do not know how to do this and fail. For example, I have installed the Kindle for Android app, and it fails to sync reading positions unless I have manually re-enabled the the wifi before trying to do so.
Is there a method to leave wifi standby mode and reconnect to wifi whenever there is demand?
Click to expand...
Click to collapse
Yes. You could buy an app called Tasker. It automates whatever you want on your android so you could tell it to, for example, turn wifi on when certain apps run.
There is also a free seven day trial version so you could see if it is worth it for you.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2
Thanks for your reply!
Yes, I know about Tasker, and have thought about it before. Unfortunately, it does not quite cover my use case:
Often, the need for Wifi access doesn't depend on which app is running, but on what I'm doing with one particular app. In case of the Kindle app, I'd like Wifi to go disconnect when reading, but to reconnect when syncing books or reading positions.

Web browser not working despite wifi connection

Dear all,
I get regularly some problem of connection with the android web browser.
When I am connectd to wifi, some applications connect (what app, skype) but some others no (shazam, tuneIn).
In addition when I start the web browser, the load bar remains stuck at 10% and the screen displays "webpage not available".
Do you have any idea to solve this issue?
For information I am using a VPN but the issue happen also when I disconnect it !
Thanks for your help and advice.
my phone :
Samsung S3 GT- I9300
android version 4.1.2

Issue with push notifications on mobile internet

Hello guys
My girlfriend has an issue with push notifications, when she is using the mobile internet. For example she doesn't receiver WhatsApp messages, as long she is using the mobile internet. She only gets a notification if she opens the app or after she connected her phone to a wifi network.
We wiped her phone and reinstalled Android using the Xperia companion software. The stamina mode is disabled and we set WhatsApp to not optimized inside the battery optimizations.
We have no ideas left, so I hope you have some suggestions how to solve the issue.
Thank you very much!

Gmail can't DL attachment on mobile data (but OK on VPN or Wifi!)

I've had this problem for many months on my Samsung S7 (it suddenly appeared). Now that I've bought an S10e I'm very displeased to have the same exact problem again. I didn't transfer anything from the S7 (knowingly. Perhaps some Google/Samsung auto-restoration of settings without my knowledge). The S10e was installed from scratch AFAIK.
Problem:
On the Gmail app downloading attachments on WiFi works fine. On mobile data it never works. It does nothing at all. Hitting preview continuously shows a 0% progress bar.
All other things work without issue on mobile data: Sending and receiving mail, browsing, navigation, YouTube, etc. is normal. Only Gmail attachments don't download...
I don't have adblockers or antivirus. Everything is updated. Gmail isn't on the background data restriction, nor do I use that function.
I tried the private DNS function, that didn't help either. Clearing the app cache and app data didn't help either.
+ VPN.
I spent some hours testing, and most of the time with an active OpenVPN tunnel (all traffic redirect through tunnel) to my home or to my office it works! The moment I disconnect the VPN, it stops working.
(Seems also to work on a LT2P Ipsec tunnel).
Some kind of DNS issues?
I have an older Motorola and an older Sony phone which don't show this problem, so it's not stemming from my Gmail account or my provider.
What can I try to fix this problem?

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