Ok this is how I so far have had a stable connection. Your not going to like this for now. You have to go into settings, wireless networks, mobile networks, network mode, then tap CDMA only. It will be 3G only but it will have more success keeping the data connection. After doing so you will lose connection for a second then it will come back at 3g strong. Since doing so I haven't lost data at all. And had better battery doing so, because it isn't trying so hard to restablish the data connection all the time. But you have to go into network settings and do CDMA only at least til they release the firmware update fixing 4glte. But it is up to you.