I get little or no service in my house on my Note 4. There are times where it even says that I am roaming! My wife has an iphone 8 and has no issues. I cannot take calls in my house, backyard or front yard due to bad connection. I went to the Verizon store and had a new sim card put in but that did not work. Is there anything that can be done to the Note 4 to increase the signal strength...other than upgrade to a new phone?