Cellphone signal suddenly gone

I have 3G in my apartment and suddenly 3 days ago I cannot get signal. I have restarted my cellphone, done everything I can. For the last 3 days, as soon as I enter my apartment, my signal goes to 1x.

I’ve missed important calls and messages because of this. I don’t understand why all of a sudden my signal is none existent in my apartment. Been living here for the past 3 years and have the same phone for the last year with no issues.


Zipcode is 84058