Droid Razr drops data signal sporatically
i have a droid razr and when i have the network in the CDMA/LTE mode, sometimes when i am traveling between towers and it goes from 4G to 3G, it goes to 4 white bars with no data connection. if i go from 3G to 4G, it does the same thing. this does not happen all the time. but when it does, if i turn on airplane mode and turn it back off then the data signal will come back. if i don't do that then it takes along time before it will go back to data connection (sometimes not at all). It almost seems that ever since the system update to the razr, the issue got worse. the update was suppose to fix that issue. I also recently got error that SIM card authentification error. that day when i got the error, i brought my phone into verizon and i got new sim card and i have not got the sim card error since, but i still get data disconnect.
so at this point, i am not sure if it is the phone, sim card, or the verizon network that is causing this data connection disconnect. I have read that other people that own the razr is not getting this issue. so i am inclined to believe it is the phone that has the problem. Anyone have some ideas? should i replace my phone or what?