Hello everyone,

Sony Xperia 1 III (QX-BC52)

I found two problems or bugs:

1. PROBLEM WITH MOBILE DATA:
This problem does not occur on the wifi network, but only when the phone uses mobile data. I will also send you a couple of different videos that I recorded with the screen record application so you can see exactly how the problem occurs.
First, for about ten days, I noticed that the icon from 4g was disappearing from time to time, and then I tried for days to find the problem and to see when and why it disappears at times and somehow I succeeded in that. This problem is present in all applications when a video is played and the sound is turned up to maximum, as soon as the sound is reduced to about half of the icons with mobile data (4g) do not disappear and the mobile data transfer works normally without interruption, or only press pause for fix this bug.

I will upload one or two videos in link bellow with situation when I show this bugs, and share list with all the applications in which this problem occurs that I have personally tested:

Link:

https://www.reddit.com/r/SonyXperia/comments/vyc7r3/xperia_1_iii_network_problem_and_mobile_data/

- Viber during video calls (occasionally)
- YouTube (every time)
- Facebook (every time)
- Instagram (every time)

In addition to this problem, I noticed that when downloading applications on the 4g network, sometimes the applications are downloaded quite slowly if we keep in mind that the phone downloads them on the 4g network. Sometimes it takes a few seconds to download a 20mb application and sometimes ten seconds, in both situations the signal is full.

2. PROBLEM WITH MOBILE NETWORK:
It also occurs frequently in areas where the phone mainly uses the 2G network, then the connection is often interrupted during the conversation, and therefore also during that period the phone cannot establish a connection, it throws out the message that there is no network even though the area is covered by the network.