Encyklopedia, frazy GHI
- GPRS
- GPS (Global Positioning System)
- GTS Energis
- Halo Polsat
- Heyah
- High Tech Computer (HTC)
- HLR (Home Location Register)
- HSCSD (High Speed Circuit Switched Data)
- HSDPA
- HSPA (High-Speed Packet Access)
- HSUPA (High-Speed Uplink Packet Access)
- Idea Centertel
- Idea Ekstraklasa
- iDEN
- IMEI ( International Mobile Equipment Identificator)
- imiCHAT
- IP Multimedia System (IMS)
- iPhone
- IrDA (Infrared Data Association)
