4G UE with 1 layer DL

Hi Experts.

Have you ever seen 4G UE with 1 layer DL?

If you mean Rank1, then yes it is normal.

Max DL 1 layer is cat1, 10 Mbps DL

Have seen?

Normally CAT1 handsets are old devices.

Also some of the devices used in IoT are CAT1 to avoid high battery consumption.

While the vast majority of handsets nowadays start from CAT6 as shown in the above picture you shared.