Tab S6 4G+ Carrier Aggregation not available after update

[Balou21]

Hello to everyone!

Yesterday I installed an update that was available, the last available before upgrading to Android 11 and One UI 3.1. After installing that update, and already before the upgrade to Android 11, 4G+ (and carrier aggregation obviously) stopped being available. The tablet now connects only up to 4G.

Any ideas?

Thank you in advance!

[ynneL]

4G+ only appears when the bandwidth is 25mhz or over what bands is your tablet using?

[Balou21]

In the area I am at the moment it uses either 800 MHz or 1800 MHz. Before the update it used LTE-A 1800 + 800, the same used by an S10+ and an A71 that are also in the house.

[ynneL]

Could be maybe the network has changed the CA Combos.

[Balou21]

It seems that the CA combos have not changed, since an S10+ and an A71 that we also have, keep using LTE-A 1800 + 800 (info by Netmonster). The Tab S6 itself, in the Netmonster app changes every some seconds from 800 to 1800MHz and vice versa.

[ynneL]

Some apps won't report CA properly unless the phone/tablet is rooted. If you dial *#0011# on your tablets keypad it will report the the bands you're using the first band is the base layer and aggregation is usually has an S number in a bracket (see my example)

[Balou21]

I dialed *#0011# and this is what I got. Is there something I could do to activate CA?

[ynneL]

Unfortunately not carrier aggregation is all dependent on if it's configured on your serving site

[Balou21]

The strange thing is that dialing *#0011# on my S10+ shows this:

 It shows that CA is activated