Xperia 1 III Problem with mobile data

[Djuro89]

When you use the mobile Internet, it sometimes happens that the 4g or 4g plus icon on the status bar to the left of the network signal strength, which appears when mobile data is turned on the. The same icon when watching a YouTube video, disappears on its own for a second, several times in a row, sometimes for several seconds. The problem is that when I'm on a video call on Viber, when the mobile data icon disappears, it stops my video and when it picks up after a second, the video continues normally. Also, when you watch a video on YouTube, when the icon disappears and appears below the video, it shows the text that the network is established. I've done a software repair via xperia companion, factory reset the phone, reset internet settings, reverted to factory APN in settings, swapped the SIM card, but the problem is still there. I think it started happening after the latest system update. The same situation as if you turned off and immediately turned on the mobile internet yourself. Is the problem something to do with the phone's software, hardware or the mobile operator itself? Does anyone know how this nonsense can be solved? Thank you

[Kirskainen]

Yea I noticed, big thanks to you.

And it seems XDA developer forums thers at least three more who has this same annoying problem.

[Djuro89]

Hello, I will update my older posts from 10-15 days ago. Xperia 1 III latest system update problem with mobile data and mobile network, AND NOW I discover this problem with mobile data does not exist when is phone on charger. And mobile network problem with phone calls exist only when is phone use 2G mobile network.

When the phone is connected to the charger, mobile data is not interrupted, as was the case when the phone is not on the charger. In all the situations in which I have listed that the problem is present when it is connected to the charger, none of the listed problems occur when it is connected to the charger, none of the listed problems occur.

During charging, there are no problems in the music player, YouTube on social networks when watching a video and the sound is turned up all the way. in all usual situations, when the volume of the speakers is reduced to a little more than half, the problem disappears.

Bellow I share link with video. Video show when the phone is connected to the charger mobile data operates normally the 4g icon does not disappear. When the phone is not connected to the charger problem with mobile data again exist:

https://www.reddit.com/r/SonyXperia/comments/w7v1th/hello_i_will_update_my_older_posts_from_1015_day...

[HannahEd01]

Hey Djuro89, I think you should send it for inspection as I didn't see any official statement about this one, but out of curiosity, when you tested another SIM card, was it from the same provider?