Samsung S8 and iPhone handsets are unable to latch to the network after Swap

Devices
1

Hi Experts.

We’re swapping ZTE to Airspan 4000 4G radios.

The challenge experienced is the Samsung S8 and iPhone handsets are unable to latch to the network, anyone who have experienced this?

2

What is the error?
Or are they not able to see the network at all?

3

Cannot attach to the network.

4

Did you get a UE trace?
Is it attach reject?
What cause?
Or is it something else for S8 and iPhone?

5

You should do tracing at UE and eNB.