4G Connectivity falling to 2G

Hello to everyone on the forum,
I own a 2024 DS4 E-Tense. Over the past 15 days, I have been experiencing an issue with the vehicle’s mobile network connectivity, which in turn affects all of my connected services.
The connectivity icon displayed on the central infotainment screen constantly shows 2G instead of 4G, which it used to be displayed previously. With a 2G connection the vehicle practically appears to be permanently offline. As a result, I am unable to send commands to the car via the MyDS application, and navigation system data such as traffic information, fuel prices, etc., are not being updated. The SatNav app is also reporting that there is no internet connection.
Has anyone else encountered a similar issue?

My sat nav lost all speed cameras, and map info last week during an update, 4g connection also lost.

My son has a Vauxhall PHEV, which I believe uses the same system as DS, his did exactly the same thing as mine on the on the same day .

All the connected services had disappeared from the car and it said on the screen to contact DS to Re-Subscribe.
The sat nav said something like “No updates available for this device”.
There was nothing showing on any maps, such as speed cameras, garages, charging points ect ect.

I rang DS connected services on the day to see what was going on, they said it might be the system got corrupted during an update and to solve it the car would need to go into a dealership to have a “forced update”.

However, a few hours after parking the car and checking again it was all there again and the maps had updated.
My son rang me that evening and told about his car, which had the exact same issues, but like mine it had also resolved itself.

In this case, there were problems with the Stellantis servers. The devices in the car had nothing to do with it.
The same thing happened with the My_DS app on phones.
After a few hours, communication was restored.

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Thats what my son seemed to think.

It’s weird that a server side problem affected your 4G connection.
In my case though, the 4G stays off for the last days and only 2G is shown on the relevant icon on the main infotainment screen. In some rare occasions it came back for a brief period (some seconds) during my driving time. I assume that I was very close to a cell tower.

Today I turned off BT in my phone and watched the info on the IVI screen. It was always 4G.

I think that most probably is a problem related to my system because I don’t think that it would be a server side issue lasting so many days.
It will be checked by the service soon.