LTE doesn’t show up, instead there is 4g

A few months ago I noticed my lte logo at the top of the screen turned to 4g, since then I get slower Internet speeds.

I put my SIM card on other phones and they all have lte logo.

my phone is iPhone 11 with iOS 15, but when on iOS 14 also only 4g

model number A2221

country: israel

carrier: Golan telecom (GOLAN T)