The #48 recording repeats itself for about 10-30 seconds then the phone will switch back to displaying LTE signal strength. However, the phone is still connected to the network extender for voice calls or 3G data.
If you are still having weak coverage with network extender then i would call Verizon to boost the power of the extender. My extender only used to work well in one room and as soon as I left it the signal would quickly drop and I will be back on cell tower again especially when upstairs. After Verizon boosted the power of Network Extender I now receive 3-5 bars of signal strength in my home.
Also, in my home I find if I turn on WIFI the battery lasts a lot longer. The phone constantly switches between LTE 1-2 bars and 3G 3-5 bars for me.
I have discovered 3 issues with my NE.
With location aware apps like Maps, Facebook, Foursquare it will display my location for Santa Clarita, CA or Saugus, CA even though I am in Monterey Park, CA no where near Santa Clarita.
Other issue is when I am in a call there is an audible clicking sound heard every few seconds. Sometimes it is just one click other times it is a succession of clicks. It sounds like someone picked up the extension of an landline telephone. The voice quality is unaffected though just the annoying clicks.
Final issue is on phones running the Android operating system if I dial numbers with +1 (area code) I get an error message from Verizon. This only happens when I am connected via network extender.