5G signals – A road test on country roads and farmland tracked 5G type, signal level, and strength across AT&T, T-Mobile, and Verizon.
Fast 5G marketing doesn’t always survive the drive off the highway, and one recent field test set out to check exactly how it holds up.
Using nPerf. a reporter tracked continuous 5G and LTE performance for three carriers on a multi-day road trip through rural roads and farmland. intentionally avoiding interstates to see what happens where cell towers are scarcer.. The journey was designed around the idea that carriers optimize coverage where people concentrate—cities and major routes—so the test targeted the “in-between” areas where most users never think to measure performance.
The setup focused on comparability.. This time. the test used three identical devices rather than earlier mixed hardware: three Samsung Galaxy S26 Ultra phones running on carrier-provided eSIMs.. One phone came from Samsung, while the other two were supplied by AT&T and T-Mobile, respectively.. The tester also noted that the nPerf app crashed far fewer times on the Galaxy devices than it did during a previous trip using Pixel phones. which helped keep the data running reliably.
Power and visibility were part of the workflow.. The cars seats carried all three phones during the trip. connected to an Anker Solix portable battery with multiple USB-C ports and AC outlets.. The goal was to ensure the phones stayed online and observable throughout the drive. including the ability to glance in the rearview and confirm all devices were active.
Instead of interstates, the route emphasized low-density areas.. With travel distance constrained by country-road speed limits. the trip still covered a meaningful loop that included Douds. Iowa—described as a real place established by an ancestor in the 1800s—along with stops and detours through southern Wisconsin and returns toward the Chicago-area home region.. The drive also included real-world disruptions: in Janesville. Wisconsin. a carriage bolt caused tire damage. leading to four new tires before the journey could continue.
After the trip, the test was compiled using nPerf results requested as a data dump.. The dataset reached into the tens of thousands of observations—over 52,000 data points across the three carriers.. Those points recorded the network type the phone connected to and how strong the connection appeared. across the length of a roughly 15-hour drive.
The measurement categories split into network type, network level, and network strength.. Network type tracked whether the phones were on LTE, LTE advanced, or 5G, including both standalone 5G and non-standalone 5G.. Network level was interpreted through the “bars” the phone displayed at different moments.. Network strength was recorded in negative decibels, where the highest value (the least negative number) indicates a stronger signal.
On 5G specifically, the results were straightforward in one respect and complicated in another.. T-Mobile was the only carrier that recorded any standalone 5G signal during the drive.. Standalone 5G was singled out because non-standalone 5G relies on 4G infrastructure to establish connectivity. which the report describes as being associated with higher latency and a stopgap approach compared with building a full 5G network.
That said, the report also highlighted how often each carrier reached 5G at all.. T-Mobile recorded 5G signals in just under 90% of the time, outperforming the other carriers by a large margin.. The headline difference, then, wasn’t just “who had 5G,” but who could reach it more consistently on rural routes.
Verizon came out stronger when the focus shifted to overall network level.. Verizon led by a good margin, with AT&T in second place.. For network strength. none of the carriers looked uniformly strong across the trip. but Verizon again led. recording a “good. but not great” signal in almost 44% of observations.. The other carriers were not far behind for that particular metric.
Putting those findings together. the report’s central tension emerged: T-Mobile frequently connected to 5G. yet Verizon often appeared to deliver stronger connection levels for most of the trip.. In other words. the carrier that most often reached 5G wasn’t necessarily the one most consistently providing the best-looking signal when the test looked beyond just “5G present.”
The tester also added a grounded, non-lab check using day-to-day usability while driving.. The drive toward Iowa City was managed with pre-downloaded podcasts in anticipation of spotty service. since the experiment was designed to stress coverage outside the interstate corridor.. The return trip included tethering to a phone to enable working more actively.
During that working period, southern Wisconsin was the only area where the report described a complete internet failure.. Even when service did not fully disappear, connectivity slowed at times.. On the farm fields of Wisconsin. productivity dipped and the report estimated downtime totaled around 20 minutes. with that disruption occurring on two separate occasions.
There was also a caveat around the tethering device. The phone used for tethering was identified as an Oppo Find N6, which the report notes was not intended for US use, raising the possibility that device compatibility contributed to the slower or more inconsistent experience.
Even so. the report emphasized that T-Mobile’s measured network level of 1 for about half the trip doesn’t signal a smooth rural connection for every metric being tested.. The tester’s personal reassurance leaned on the fact that. on the trip. the personal daily-use device was a T-Mobile phone—suggesting that while the data shows gaps in performance. the overall experience may not be catastrophic in practice.
The broader implication was blunt: move outside the interstate corridor and the “fastest network” promise becomes harder to justify.. The report argued that carriers are likely to struggle off the highway because coverage is still built around where demand is highest.. Yet it also suggested the reality may be less bleak than expected for users willing to adjust expectations. download content ahead of time. or rely on supplemental connectivity when traveling.
For future attempts. the tester said the next trip could skip downloading podcasts. pointing to a more optimistic view after seeing how the networks behaved across rural terrain—even while the strongest signals and most reliable experience still depended on which carrier and which metric you prioritized.
5G network coverage AT&T vs Verizon T-Mobile 5G nPerf testing rural cell coverage standalone 5G signal strength