No 4G after latest update to 4.4.2

[iPhone4 Refugee]

Data connectivity won't work -- zero 4G since I updated Wifi only works in one place -- the place where I installed the update.

I've tried doing the airplane toggle switch, rebooting, etc...nothing.

Any tips?

 

[iPhone4 Refugee]

Ok. In the event that someone else is suffering from the same problem:

Talked to an AT&T representative. Turns out the SIM card from my iPhone 4 finally is incompatible with 2014 technology. This is what they decided:

"The SIM card is 3G capable but can reach 4G. The KitKat update pushed the G2 into the LTE range and that is what made the SIM not compatible. We need to get you a LTE SIM."