I've moved from a Samsung S5 and I've noticed that the LGv20 signal seems a lot weaker and also is reluctant to change once it deteriorates. For example areas where the S5 had 3G or 4G the LGv20 will generally say 1x. Sometimes if I switch to airplane mode and back it will come back as 4G. Is there a way to improve the wireless network performance on this phone? I feel like I've taken a big step backwards in network signal.