from 1988 to 2015 my bride and i have been firmly connected with cellular service ,,retired A.T.&T CO ELECTRONIC TECHS,,THEN SHE BECAME NETWORK MANAGER FOR C-SPIRE AND I WAS SWITCH TECH FOR U.S. UNWIRED AKA SPRINT AND WENT THRU THE EVOLUTION OF PCS PHONE UPGRADES THAT STILL GO ON AND ON AND ON ,,PHONES THAT ARE WAY TOO SMART //WISH I HAD ALL THE PHONES I EVER TESTED STARTING WITH 1ST BAGPHONE 2-4-1988 HAVE JUST A FEW OF 1ST GENERATION FLIP PHONES AND A BLACKBERRY BUT PART OF OUR JOBS WAS TESTING EVERY POSSIBLE TYPE CELL PHONE KNOWN AFTER EACH SWITCH UPGRADE THAT TOOK ALL NIGHT !!!!