It's not an iPhone killer. But the G1 is the first viable iPhone alternative, says the Sage of Potomac. If you don't have time to read his full review, I've listed Walt Mossberg's talking points:

• Specs: 3G, $179, Amazon MP3, App Store, 1GB, Copy and Paste
• The Google apps work great.
• You can swap out the battery to avoid recharging on the go.
• But it lacks the iPhone's finger-flick UI.
• It falls short of Apple's music, picture and video apps.
• T-Mobile's high-speed network is not so widespread as AT&T or Verizon. Check before you buy.

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