Would you like the exact instructions for how it used to be done, or help with a current U.S. Cellular signal issue instead?

I believe you're asking about the related to U.S. Cellular . This refers to a specific, well-known customer service shortcut.

Here’s the story: In the early to mid-2000s, before smartphones and over-the-air updates became seamless, CDMA carriers (like U.S. Cellular, Verizon, and Sprint) used a special feature code: *228 .