Last week we upgraded 3 iphone5s phones to iphone8 and we have an iphone7 on the plan also. At the same time, we switched the four lines to the Go Unlimited plan. Since then, we have had problems with data -- stops working intermittently on each device at different places and times, at times, we couldn't send imessages although all settings were correct; didn't receive a phone call in a place where we always had verizon service before -- phone never rang but voicemail was received. I don't know if the problem is with the newer devices or the plan or both, but we expected the level of service that we previously had!