Hey guys,
I'm really happy with my Mi4C and the EU Rom, but one issue is really driving me nuts.
When I'm connected to my home WLAN (IPv6 over a Fritz!Box 7490) I receive PUSH Notifications severely delayed. In other WLANs (at University or at friends houses) or when using 4G/LTE, I don't have any problems/delays with the PUSH Notifications at all.
Background Info: I use the App "Pushover" and a bunch of self-made scripts on some servers to send me Push notifications that I really need to see instantly... and on all my other mobile devices (Samsung S4 and a bunch of other devices I tried) they arrive instantly as they should, only on my Mi4C with the EU Rom they are 3-4 Minutes delayed (only in my WLAN, otherwise I have no problems, as explained above) or not at all - at least before I wake up my phone and check the app manually.
I tried 3 workarounds:
1) Lock the Pushover App:

2) Change the Settings for the Pushover App to be allowed to maintain a background connection:

3) Disable IPv6 on the phone.
Sadly all workarounds had no positive effect at all. I recorded a video as well:
/edit:
I did some further testing on other WLANs and I also tried the official version of MIUI and CM 12.1. Here are the results:
- Other WLANs: Same problem
- Official EN Miui: Same problem
- CM 12.1: No problems at all.
I'm pretty sure there is still a severe Bug in latest EU Rom, regarding WLAN and Push notifications whilst being in sleep-state.
Any ideas what else I could try or how to report this bug to be reviewed?
Kind regards,
Ralf
P.S: My device is a Mi4c and I'm on 5.12.31
I'm really happy with my Mi4C and the EU Rom, but one issue is really driving me nuts.
When I'm connected to my home WLAN (IPv6 over a Fritz!Box 7490) I receive PUSH Notifications severely delayed. In other WLANs (at University or at friends houses) or when using 4G/LTE, I don't have any problems/delays with the PUSH Notifications at all.
Background Info: I use the App "Pushover" and a bunch of self-made scripts on some servers to send me Push notifications that I really need to see instantly... and on all my other mobile devices (Samsung S4 and a bunch of other devices I tried) they arrive instantly as they should, only on my Mi4C with the EU Rom they are 3-4 Minutes delayed (only in my WLAN, otherwise I have no problems, as explained above) or not at all - at least before I wake up my phone and check the app manually.
I tried 3 workarounds:
1) Lock the Pushover App:

2) Change the Settings for the Pushover App to be allowed to maintain a background connection:

3) Disable IPv6 on the phone.
Sadly all workarounds had no positive effect at all. I recorded a video as well:
/edit:
I did some further testing on other WLANs and I also tried the official version of MIUI and CM 12.1. Here are the results:
- Other WLANs: Same problem
- Official EN Miui: Same problem
- CM 12.1: No problems at all.
I'm pretty sure there is still a severe Bug in latest EU Rom, regarding WLAN and Push notifications whilst being in sleep-state.
Any ideas what else I could try or how to report this bug to be reviewed?
Kind regards,
Ralf
P.S: My device is a Mi4c and I'm on 5.12.31
Last edited: