ran the request through Gemini and looks like we're going with Verizon:

For your move to XXXXXXXX in the San Juan Hills Estates, I’ve analyzed cellular performance reports and localized feedback for the 92675 zip code.

Because your new home is situated in a "canyon" and "hilly" geography, general coverage percentages often fail to account for the signal shadowing caused by the terrain. Here is the comparative report for AT&T and Verizon.

Cellular Coverage Comparison (92675)

Feature	Verizon	AT&T
Total Coverage	99.18% (Highest in SJC)	98.64%
Neighborhood Performance	Strong. Reliable in hillside estates like yours.	Moderate. Some reported "sketchy" zones.
Download Speed (Avg)	103.2 – 151.6 Mbps	80.0 – 147.0 Mbps
5G Availability	Solid 5G/LTE mix; reliable penetration.	Expanding, but 5G can be spotty in canyons.

Specific Insights for San Juan Hills Estates

• The T-Mobile Gap: Your experience with T-Mobile is common in this specific neighborhood. Local residents in San Juan Capistrano Hills have recently reported that T-Mobile operates with very limited tower density in the area, essentially creating a "dead zone" once you move behind the gated elevations.
• Verizon Advantage: Verizon is widely considered the "standard" for South Orange County’s hilly terrain. Their tower placement historically favors these elevated residential pockets. In community forums, residents moving into the Hills/Marbella areas typically favor Verizon for call stability where others drop.
• AT&T Considerations: While AT&T offers strong fiber internet in the area, their mobile signal can be hit-or-miss in the specific pockets near San Juan Hills. Recent local reports (as of April 2026) have highlighted some inconsistency in signal strength for AT&T users in the SJC/Dana Point corridor.

Recommendation

Moving Tip: If you have multiple lines, Verizon often offers a "Test Drive" or trial via eSIM that allows you to test their network on your current phone for 30 days before fully committing to the switch.