T-Mobile RF engineer answers questions about iPhone traffic and LTE plans

A T-Mobile RF engineer, claiming to be “heavily involved” in the carrier’s LTE upgrades and network modernization plans, started an AMA on Reddit this morning. Not surprisingly, many of the questions were iPhone and Apple-related. The questions ranged from how much 2G/EDGE traffic the carrier’s network sees from iPhone customers as it begins to transition that spectrum to WCDMA to where T-Mobile plans to upgrade its network coverage next:

Q: Can you talk briefly about how much traffic on GERAN you see from iPhone customers? How much of a catch-22 is that situation for moving that PCS spectrum dedicated to it over to WCDMA?