[4.2.0.19][4.1.0.24][Xperia 10II] losing cellular network after call

I have had the same behavior on my Xperia 10 and it was annoying… Well, nice to see some persistence in SFOS. :wink:

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I tried the same with my xq-au52 having the SIM card of Telia FI in slot #1 (and an SD card).

The phone was on 4G network when the calls started. During the call, the phone indicated 3G at the top of the home view. After ending the call (at the called party or on my phone), the phone returned to the 4G network in about 6 seconds. I tested this 4-5 times.

Just to clarify, when I make or receive a call, the data connection goes down.
No problem so far.
When the call is ended, the 2G network switches on for 2s, then the entire cellular network connection breaks down.

I then have no mobile network for 20s and longer (up to 1minute).
This does not happen with a XperiaX.
I tested it today at work.

By the way, since last night the 3G network of german telekom is switched off, so it is no option to prefer 3G.

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perhaps we can try to make a short video showing the Issue. I tried already, but I observe that Issue sometimes, but not always and had no luck so far.

I have this issue too. What is puzzling is that the network is not restored immediately even if I turn the phone off and on again, but only after a few minutes. Maybe the issue is that the operator blocks the SIM temporarily because it detects some kind of unusual activity?

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Indeed, you’re right.
And more, even if I turn on and off flightmode it takes up to 1 minute until the phone connects to cellular network.

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Same here with Xperia 10 II. My provider is Drillisch. All in All I have to switch the flightmode on and off all the time. The network connectivity is very bad! It takes a lot of time and even if 4G is shown, there is no connection to the internet… I noticed, that there is also a differenz between Android apps and sailfish apps. sailfish apps get the connection faster, while androidapps might or might not connect…

Same with Xperia 10 and german D-Netz

Same here with Xperia 10 and german Telekom and Vodafone Network. It does not make a difference if sim1/sim2 is used.
After call (not always!) it takes up to 60s until reconnect to network (mobile and voice), same for flight mode.

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Compare with my issues with XA2 (before it died).

This issue remains after the Update to 4.2 (EA) on my X 10 II.

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I can confirm this (Xperia 10 ii, SFOS 4.2)

That’s bad, because it is very annoying to wait one minute after every call to make a new call, write a message or browsing the web… :unamused:

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Can someone with trustlevel 3 edit the tags of my bugreport from 4.0.1. to 4.1.0. please?
Thank you.

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Replying here instead of creating a separate issue: For me 2G is completely broken. I can’t use the 2G only mode, which may also explain the network issues after a call. It just tries to connect and fail in a loop. I made a short video demonstrating the issue: cloud@neko.dev

This is on an Xperia 10 II, with 4.2.0.19.

The Ubuntu Touch guys seem to have the same issue (they use the mer ofono too) and one of them shared the following workaround:

We can fix the problem with adding the precise hidl interface: transport=binder:name=slot1;interface=radio@1.1 in the ril-subscription.conf file

https://matrix.to/#/%23_oftc_%23sailfishos%3Amatrix.org/%247vankzjvjC8yFKyZN95kLN8rw0yNEwdzjRcOAJLAmvI?via=neko.dev&via=matrix.org&via=netsoj.nl&via=msg.maquis196.io

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I have filed an internal bug on this. Thanks for reporting.

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Unfortunately the bug still exists in 4.2.0.21 EA on my Xperia 10 II.

Indeed, it takes almost exactly 150 seconds (2,5 minutes) to reconnect (SFOS 4.2.0.21, Xperia 10 ii, Telekom Germany). That is way too long.

Incoming call causes switching from 4G to 2G and thus cuts mobile internet. Once the call is finished, reestablishing a data connection with 2G takes more than a minute. However, the 2G data connection is automatically cut after a few seconds and for little less than 1,5 minutes no network access at all exists. Only thereafter 4G is back.

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I’ve been able to send some Video and Logs of that to Jolla. Also I detected, that this only happens to me if WiFi is off. Reproducible. What i didn’t test, is the condition that WiFi is on but no network available. Perhaps someone can confirm that as well.
By the way, i think mine connects back in like in 36 sec or so.

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Indeed, in my test I switched Wifi off. Reconnection depends on the quality of the mobile network. In our office the network is weak. This could be the reason why restoring mobile data connection took so long.

However, the steps are always the same: falling back to 2G for a voice call, after the call reestablishing a first data connection with 2G, then killing all mobile network access completly and eventually establishing a new 4G connection.

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