I dont know if anybody has seen this...
I've had a Samsung 4G LTE Network Extender for some years, using a variety of iPhones. Over the last 6 months or so, I've had to reset the phones after the network extender has power cycled.
After a reset of the extender or power outage, phones show maybe one bar and #48 announces "not connected to ..." A simple reset of the phones, and they wake up connected with 5 bars and ready to go.
Not a huge issue, but strange.
thanks