Whiz
Whiz is a telecommunications company that appears in GTA 6.
Whiz phones first made an appearance in GTA 4, later returning in Chinatown Wars, GTA 5, and GTA Online.
The company was confirmed to return in Trailer 2, where a Whiz store can be seen during a car chase in 
The company produces its own mobile phones and operates pay phones in Los Santos. No Whiz payphones have been spotted in GTA 6 so far.
Whiz is known for packing its phones with unnecessary features, and has even been shown to copy its competitor over at iFruit, adding a few extra benefits to surpass the competition.
GTA 4's website once called Whiz the "number one provider of unexplainable headaches," which could indicate that the phones are known for causing health issues.
Whiz is likely inspired by the real telecommunications company, Verizon, though its branding is more similar to Sprint Corporation, before its incorporation into T-Mobile.
