Packet Service type:
unknown(1) - service type is unknown.
none(2) - no service.
gprs(3) - General Packet Radio Service (GPRS).
edge(4) - Enhanced Data rates for GSM Evolution (EDGE).
umtsWcdma(5) - Universal Mobile Telecommunications
System (UMTS) / Wideband Code-Division
Multiple-Access (W-CDMA).
hsdpa(6) - High-Speed Downlink Packet Access (HSDPA)
hsdpa(7) - High-Speed Uplink Packet Access (HSUPA)
hspa(8) - High-Speed Packet Access (HSPA)
hspaPlus(9) - High-Speed Packet Access (HSPA) Plus
lte(10) - Long Term Evolution