My phone tends to completely lose 3 and 4G signal every now and then. It'll happen at least once every 2 days or so. The phone will have reception for calls and text but no browsing capability. Apps and email that require an internet connection will not work either i.e. facebook or the app market. It happens in places where I know I have 3 and 4G signal. When it chooses to till just go dead. I’ve tried switching from CDMA/LTE to CDMA and it doesn’t help. The only way for me to regain the signal is to shut the phone down and turn it back on. Is there something wrong with the phone. Any recommendation on fixes for this issue?