Here is what the different data network indicators mean on your Android phone:
SymbolMeaningMax Download RateMax Upload Rate
GGeneral Packet Radio Service57.6 kbps28.8 kbps
EEnhanced Data Rates for GSM Evolution236.8 kbps236.8 kbps
3G3rd generation mobile telecommunications384 kbps384 kbps
HHigh Speed Packet Access13.98 Mbps5.76 Mbps