[Q] What causes the Gmail app to leave outgoing messages stuck in the Outbox? - Android Q&A, Help & Troubleshooting

Hi, for years now (and on many different phones and Android OS versions), I've run into a reoccurring issue in the Gmail app: now and again, a batch of messages I've told the app to send will get stuck in the Outbox as "Sending" and won't ever send, even after I've rebooted the phone, cleared the cache, insured the phone is online, etc... This only seems to happen when there's some sort of an internet connection issue, but I haven't been able to figure out if it's associated with one particular thing: airplane mode, being out of connection range, having auto-sync or background data turned off, etc... Does anyone know what triggers this behavior? If it was caused by being in one particular state, I'd just avoid sending email while in that state.
Thanks, Alan

Ugh!!!! Was hoping the 4.2 update might have fixed this, but no luck. Has Google even acknowledged this issue yet? It's MADDENING!

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[Q] Delayed Hangouts and call issues

Hi, for past few months I'm having issues with Hangouts app, as sometimes, messages (not SMS) are sent/received with very big delay (around 30 min or even more). And this applies both to WiFi/3G connection. Also, all other phones/tablets I have are not suffering from this at all, so, I think it's unlikely that this is internet connection issue. I've already tried reboots, clearing cache, and so on, but nothing seems to make any difference.
The second issue I'm having with this phone is, that sometimes when I call somebody, phone puts that call on speaker for itself.
Or is there some kind of preset for specific contact to automatically put that call on speaker? Because, I'm having this issue usually with only one person.
I thought about restoring to factory defaults, but first I wanted to ask if somebody has the same issue and possibly solution. Or maybe even flashing custom ROM, all I want is to get this finally working.
Thanks in advice

Data not syncing consistently on all firmwares

Hi guys,
First let me explain the situation: I've noticed recently that a lot of my apps, such as Gmail, Facebook Groups, Messenger and pretty much any app I need to have instantaneous notifications, aren't syncing properly. I might get notifications an hour or more after they are delivered. Even when I force-sync an app, such as refreshing the notification feed on Facebook Groups, there are delays that can go on indefinite until I get sick of waiting. I don't even know what the conditions are for this problem to occur because other times such as on WiFi, I have pretty consistent data syncing. Just a couple minutes ago I tried turning on and off airplane mode which seems to have fixed the issue. I'm going to see how long this lasts.
Here is the app I'm currently using that may affect data synchronization.
- Greenify: same problem persists regardless of settings and root. Haven't tried completely uninstalling it.
So just to be clear this issue persists from firmware to firmware regardless of Android version. I've had many android phones and am very aware of flashing procedures and all the ways to enhance my phone. My phone is unlocked and I flash firmwares using flash tool. I've tried fixing this issue by running rooted and unrooted to no avail. I've also taken all these apps out of the doze mode and turned them all on as priority.
Please let me know if you have any solution to this. It's costing me business.
Thanks!

Firewall problem: WhatsApp messages not arriving (ONLY when the phone is in sleep)

So first of: This is not phone or android version or even firewall-app specific because I've had the problem on previous phones and I know other people who also have this problem.
I'm running a firewall with a whitelist and obviously WhatsApp has Wi-Fi and mobile data allowed. It generally works. I can send and receive messages and media.
But if I put my phone away for a longer period of time (I think around 15 minutes or more) I no longer receive messages until I open WhatsApp.
So for some reason WhatsApp can't establish a connection when the phone is in sleep (or whatever it's called).
I verified this with another person who had the same problem. Turned off firewall and put the phone away for an hour or more, then sent a message and it arrived instantly. Worked for both phones.
I'm guessing that I need to give some other app internet access so WhatsApp receive messages while the phone is in sleep.
P.S: No, it's not that the notifications aren't showing up, it's not some battery saver, I did some research before and no suggested solution worked. Except for turning off the firewall (the 3-4 messages we sent for testing all worked perfectly fine), but since I came up with this idea myself, there was no thread to get some info about it and I didn't really find anything using google (though I found it hard to word the search).

Notifications late or not showing on wifi connection

Hello everyone,
I've been having this issue for several months now where all my social apps like messenger, instagram, whatsapp, flock, gmail and so on won't show notifications when my phone is connected to any type of wifi.
The notifications are late, or they show up when i open the app. Sometimes they repeat themselves even after i checked, like something is blocking them till some point.
I tried SO MANY things to fix this (factory reset, disable device care and any battery saving settings, reinstalled apps,...) and ended up using 4g all the time as the most solid one for the time being.
It's just very frustrating that something as simple is this is not getting fixed for a long time now.
Does anyone have similar issues? Or maybe even a fix for this? I noticed this happening to other people around me using different samsung devices.
I don't know if this is a samsung related issue or something else.
Thanks!

My android app stops sending data after a day or two

Hello fellow developers,
I am having trouble with an Android app I am working on that is programmed to send GPS data to a web service every 2 hours. The issue is that after about a day, the service appears to be interrupted on the phone, and data is no longer sent.
To troubleshoot this issue, I have tried the following with no success:
I have checked the app for error messages or exceptions, but none are being thrown when it stops sending data to the web service.
I have set an alarm to see that keeps the app working in non-interactive mode. It works for a few days and then stops again even with the alarm set and going off everyday.
I have checked the web service logs, but there are no errors or issues on that side that would prevent the data from being received.
I have tested the app on multiple devices, and the issue occurs mostly in Sony Xperia, Samsung S22 etc.
I have tried different intervals for sending the GPS data to the web service (e.g., every 10 mins), but the issue persists.
I have tried wakelock/caffiene apps to keep the CPU running.
All Android settings are set to not let the app go to sleep and to ignore battery optimization for my app, and it is also a foreground service.
I am wondering if anyone has any insight into what could be causing this issue and how to fix it? I appreciate any help or advice you can offer!

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