Does the Original Game Boy Have Wi-Fi? No - Only Wired Link Cable

No. The original Game Boy (1989) predates Wi-Fi (1997 standard, 1999 consumer).

Connectivity It Did Have

• Game Link Cable (Serial): 2-player (later 4-player via adapter). Wired only.
• Infrared (IR): **Not on original DMG.** Added on **Game Boy Color** (Pokémon Crystal, Mystery Gift) and **GBA** (e.g., Pokémon FireRed/LeafGreen Mystery Gift, Mario Golf).
• Mobile Adapter GB (Japan, 2001): Plugged into Link Cable port → 14.4 kbps cellular (PHS) for Pokémon Crystal Mobile. Extremely rare.

Modern Wireless for Game Boy

• GB Wireless Link (Homebrew): ESP32-based cartridge → Wi-Fi/Bluetooth link cable emulation (GB/GBC/GBA).
• Analogue Pocket: Built-in Wi-Fi/Bluetooth for link cable emulation (via firmware).
• Emulators (mGBA, SameBoy): Netplay over internet.

Original Game Boy: Wired Link Cable only. No wireless of any kind.